Journal papers

M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner
Estimation of losses caused by sidewall roughness in thin-film lithium niobate rib and strip waveguides
Optics Express (submitted for publication, 2024)

M. Hammer, H. Farheen, J. Förstner
How to suppress radiative losses in high-contrast integrated Bragg gratings
Journal of the Optical Society of America B 40 (4), 862-873 (2023)  Preprint (ps.gz)  Preprint (pdf)  External online source

H. Nikbakht, B. van Someren, M. Hammer, B.I. Akca
Weak optical modes for high-density and low-loss photonic circuits
APL Photonics 8 (5), 056107 (2023)  External online source

H. Nikbakht, M.T. Khoshmehr, B. van Someren, D. Teichrib, M. Hammer, J. Förstner, B.I. Akca
Asymmetric non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint
Optics Letters 48 (2), 207-210 (2023)  External online source

L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R. Sharapova
Flexible source of correlated photons based on LNOI rib waveguides
Journal of Physics: Photonics 4 (2), 025001 (2022)  External online source
Corrigendum: Flexible source of correlated photons based on LNOI rib waveguides (2022, J. Phys. Photonics 4, 025001)
Journal of Physics: Photonics 5 (2), 029501 (2023)  External online source

M. Hammer, L. Ebers, J. Förstner
Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics
OSA Continuum 4 (12), 3081-3095 (2021)  Preprint (ps.gz)  Preprint (pdf)  External online source
(star) Highlighted as an Editors' Pick, December issue 2021 of OSA Continuum.
(star) Listed among the Top Downloads in Optics Continuum from December 2021.

J.P. Höpker, V. Verma, M. Protte, R. Ricken, V. Quiring, C. Eigner, L. Ebers, M. Hammer, J. Förstner, C. Silberhorn, R.P. Mirin, S.W. Nam, T. Bartley
Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides
Journal of Physics: Photonics 3 (3), 034022 (2021)  External online source

M. Hammer, L. Ebers, J. Förstner
Resonant evanescent excitation of guided waves with high-order optical angular momentum
Journal of the Optical Society of America B 38 (5), 1717-1728 (2021)  Preprint (ps.gz)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, J. Förstner
Light diffraction in slab waveguide lenses simulated with the stepwise angular spectrum method
Optics Express 28 (24), 36361-36379 (2020)  Preprint (pdf)  External online source

M. Hammer, L. Ebers, J. Förstner
Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles
Optical and Quantum Electronics 52, 472 (2020)  Preprint (ps.gz)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, M.B. Berkemeier, A. Menzel, J. Förstner
Coupled microstrip-cavities under oblique incidence of semi-guided waves: A lossless integrated optical add-drop filter
OSA Continuum 2 (11), 2997-3308 (2019)  Preprint (pdf)  External online source

M. Hammer, L. Ebers, J. Förstner
Oblique quasi-lossless excitation of a thin silicon slab waveguide: A guided-wave variant of an anti-reflection coating
Journal of the Optical Society of America B 36 (9), 2395-2401 (2019)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, L. Ebers, J. Förstner
Oblique evanescent excitation of a dielectric strip: A model resonator with an open optical cavity of unlimited Q
Optics Express 27 (7), 9313-9320 (2019)  Preprint (ps.gz)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, J. Förstner
Oblique incidence of semi-guided planar waves on slab waveguide steps: Effects of rounded edges
Optics Express 26 (14), 18621-18632 (2018)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, J. Förstner
Spiral modes supported by circular dielectric tubes and tube segments
Optical and Quantum Electronics 49 (4), 176 (2017)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, S. Alhaddad, J. Förstner
Hybrid coupled mode modeling in 3-D: perturbed and coupled channels, and waveguide crossings
Journal of the Optical Society of America B 34 (3), 613-624 (2017)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Pollnau, M. Hammer, C. Dongre, H.J.W.M. Hoekstra
Combined microfluidic-optical DNA analysis with single-base-pair sizing capability
Biomedical Optics Express 7 (12), 5201-5207 (2016)  Preprint (pdf)  External online source

F. Civitci, M. Hammer, H.J.W.M. Hoekstra
Planar prism spectrometer based on adiabatically connected waveguiding slabs
Optics Communications 365, 29-37 (2016)  Preprint (pdf)  External online source

M. Hammer, A. Hildebrandt, J. Förstner
Full resonant transmission of semi-guided planar waves through slab waveguide steps at oblique incidence
Journal of Lightwave Technology 34 (3), 997-1005 (2016)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, A. Hildebrandt, J. Förstner
How planar optical waves can be made to climb dielectric steps
Optics Letters 40 (16), 3711-3714 (2015)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer
Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver
Optics Communications 338, 447-456 (2015)  Preprint (ps.gz)  Preprint (pdf)  External online source

H.J.W.M. Hoekstra, M. Hammer
A general relation for group delay and the relevance of group delay for refractometric sensing
Journal of the Optical Society of America B 31 (7), 1561-1567 (2014)  Preprint (pdf)  External online source

F. Civitci, M. Hammer, H.J.W.M. Hoekstra
Semi-guided plane wave reflection by thin-film transitions for angled incidence
Optical and Quantum Electronics 46 (3), 477-490 (2014)  Preprint (ps.gz)  Preprint (pdf)  External online source

E.F. Franchimon, K.R. Hiremath, R. Stoffer, M. Hammer
Interaction of whispering gallery modes in integrated optical micro-ring or -disk circuits: Hybrid CMT model
Journal of the Optical Society of America B 30 (4), 1048-1057 (2013)  Preprint (ps.gz)  Preprint (pdf)  External online source
(star) Listed among the Top Downloads in JOSA B from April, May, & June 2013; listed among the Top Downloaded Articles on Integrated Optics from JOSA B, January 2014.

M. Hammer
HCMT models of optical microring-resonator circuits
Journal of the Optical Society of America B 27 (11), 2237-2246 (2010)  Preprint (ps.gz)  Preprint (pdf)  External online source

O.V. Ivanova, R. Stoffer, M. Hammer
A dimensionality reduction technique for 2D scattering problems in photonics
Journal of Optics 12 (3) 035502, 9pp (2010)  Preprint (pdf)  External online source

M. Hammer, O.V. Ivanova
Effective index approximations of photonic crystal slabs: a 2-to-1-D assessment
Optical and Quantum Electronics 41 (4), 267-283 (2009)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer
Chains of coupled square dielectric optical microcavities
Optical and Quantum Electronics 40 (11-12), 821-835 (2009)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Maksimovic, M. Hammer, E. van Groesen
Coupled optical defect microcavities in one-dimensional photonic crystals and quasi-normal modes
Optical Engineering 47 (11), 114601 1-12 (2008)  Preprint (pdf)  External online source
(star) The paper received the 2008 Rudolf Kingslake Medal and Prize of SPIE.

M. Maksimovic, M. Hammer, E. van Groesen
Field representation for optical defect microcavities in multilayer structures using quasi-normal modes
Optics Communications 281 (6), 1401-1411 (2008)  Preprint (pdf)  External online source

O.V. Ivanova, M. Hammer, R. Stoffer, E. van Groesen
A variational mode expansion mode solver
Optical and Quantum Electronics 39 (10-11), 849-864 (2007)  Preprint (pdf)  External online source

K.R. Hiremath, M. Hammer
Modeling of tuning of microresonator filters by perturbational evaluation of cavity mode phase shifts
Journal of Lightwave Technology 25 (12), 3760-3765 (2007)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer
Hybrid analytical/numerical coupled-mode modeling of guided wave devices
Journal of Lightwave Technology 25 (9), 2287-2298 (2007)  Preprint (ps.gz)  Preprint (pdf)  External online source

D. Yudistira, H.J.W.M. Hoekstra, M. Hammer, D.A.I. Marpaung
Slow light excitation in tapered 1D photonic crystals: theory
Optical and Quantum Electronics 38 (1-3), 161-176 (2006)  Preprint (pdf)  External online source

K.R. Hiremath, R. Stoffer, M. Hammer
Modeling of circular integrated optical microresonators by 2-D frequency domain coupled mode theory
Optics Communications 257 (2), 277-297 (2006)  Preprint (ps.gz)  Preprint (pdf)  External online source

R. Stoffer, K.R. Hiremath, M. Hammer, L. Prkna, J. Ctyroky
Cylindrical integrated optical microresonators: Modeling by 3-D vectorial coupled mode theory
Optics Communications 256 (1-3), 46-67 (2005)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, R. Stoffer
PSTM / NSOM modeling by 2-D quadridirectional eigenmode expansion
Journal of Lightwave Technology 23 (5), 1956-1966 (2005)  Preprint (ps.gz)  Preprint (pdf)  External online source

K.R. Hiremath, M. Hammer, R. Stoffer, L. Prkna, J. Ctyroky
Analytical approach to dielectric optical bent slab waveguides
Optical and Quantum Electronics 37 (1-3), 37-61 (2005)  Preprint (ps.gz)  Preprint (pdf)  External online source

A. Suryanto, E. van Groesen, M. Hammer
Weakly nonparaxial effects on the propagation of (1+1)D spatial solitons in inhomogeneous Kerr media
Journal of Nonlinear Optical Physics and Materials 14 (2), 203-219 (2005)  Preprint (ps.gz)  Preprint (pdf)  External online source

H. Dötsch, N. Bahlmann, O. Zhuromskyy, M. Hammer, L. Wilkens, R. Gerhardt, A. Popkov, P. Hertel
Applications of magnetooptical waveguides in integrated optics: review
(In A. Boardman, ed., Nonlinear and Integrated Magneto-Optics, Special Feature Issue of JOSA B), Journal of the Optical Society of America B 22 (1), 240-253 (2005)  Preprint (ps.gz)  Preprint (pdf)  External online source
(star) Listed among the 15 Most Highly Cited Articles in JOSA B, October 2013.

E. Flück, M. Hammer, W.L. Vos, N.F. van Hulst, L. Kuipers
Near-field probing of photonic crystals
Photonics and Nanostructures 2 (2), 127-135 (2004)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer
Quadridirectional eigenmode expansion scheme for 2-D modeling of wave propagation in integrated optics
Optics Communications 235 (4-6), 285-303 (2004)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, D. Yudistira, R. Stoffer
Modeling of grating assisted standing wave microresonators for filter applications in integrated optics
Optical and Quantum Electronics 36 (1-3), 25-42 (2004)  Preprint (ps.gz)  Preprint (pdf)  External online source

A. Suryanto, E. van Groesen, M. Hammer
Finite element analysis of optical bistability in one-dimensional nonlinear photonic band gap structures with a defect
Journal of Nonlinear Optical Physics and Materials 12 (2), 187-204 (2003)  Preprint (ps.gz)  Preprint (pdf)  External online source

E. Flück, M. Hammer, A.M. Otter, J.P. Korterijk, L. Kuipers, N.F. van Hulst
Amplitude and phase evolution of optical fields inside periodic photonic structures
Journal of Lightwave Technology 21 (5), 1384-1393 (2003)  External online source

A. Suryanto, E. van Groesen, M. Hammer, H.J.W.M. Hoekstra
A finite element scheme to study the nonlinear optical response of a finite grating without and with defect
Optical and Quantum Electronics 35 (4), 313-332 (2003)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer
Resonant coupling of dielectric optical waveguides via rectangular microcavities: The coupled guided mode perspective
Optics Communications 214 (1-6), 155-170 (2002)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, E. van Groesen
Total multimode reflection at facets of planar high contrast optical waveguides
Journal of Lightwave Technology 20 (8), 1549-1555 (2002)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer
Mode expansion modeling of rectangular integrated optical microresonators
Optical and Quantum Electronics 34 (5), 541-557 (2002)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, R. Stoffer
Integrated optical cross strip polarizer concept
Optical and Quantum Electronics 33 (4/5), 413-431 (2001)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, L. Wilkens, O. Zhuromskyy, H. Dötsch, P. Hertel
Integrated magnetooptic cross strip isolator
Optics Communications 189 (4-6), 251-259 (2001)  Preprint (ps.gz)  Preprint (pdf)  External online source

O. Zhuromskyy, H. Dötsch, M. Lohmeyer, L. Wilkens, P. Hertel
Magnetooptical waveguides with polarization independent nonreciprocal phase shift
Journal of Lightwave Technology 19 (2), 214-221 (2001)  Preprint (ps.gz)  Preprint (pdf)  External online source

O. Zhuromskyy, M. Lohmeyer, N. Bahlmann, P. Hertel, H. Dötsch, A. F. Popkov
Analysis of nonreciprocal light propagation in multimode imaging devices
Optical and Quantum Electronics 32 (6/8), 885-897 (2000)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, H. Dötsch, P. Hertel
Unidirectional magnetooptic polarization converters
Journal of Lightwave Technology 17 (12), 2605-2611 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Fehndrich, A. Josef, L. Wilkens, J. Kleine-Börger, N. Bahlmann, M. Lohmeyer, P. Hertel, and H. Dötsch
Experimental Investigation of the Nonreciprocal Phase Shift of a TE-mode in a Magneto-optic Rib Waveguide
Applied Physics Letters 74 (20), 2918-2920 (1999)  External online source

N. Bahlmann, M. Lohmeyer, O. Zhuromskyy, H. Dötsch, P. Hertel
Nonreciprocal coupled waveguides for integrated optical isolators and circulators for TM-modes
Optics Communications 161 (4-6), 330-337 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, P. Hertel
Radiatively coupled waveguide polarization splitter simulated by wave-matching based coupled mode theory
Optical and Quantum Electronics 31, 877-891 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

O. Zhuromskyy, M. Lohmeyer, N. Bahlmann, H. Dötsch, P. Hertel, A.F. Popkov
Analysis of polarization independent Mach-Zehnder type integrated optical isolator
Journal of Lightwave Technology 17 (7), 1200-1205 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

N. Bahlmann, M. Lohmeyer, H. Dötsch, P. Hertel
Finite element analysis of nonreciprocal phase shift for TE-modes in magneto-optic rib-waveguides with a compensation wall
IEEE Journal of Quantum Electronics 35 (2), 250-253 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, N. Bahlmann, P. Hertel
Geometry tolerance estimation for rectangular dielectric waveguide devices by means of perturbation theory
Optics Communications 163 (1-3), 86-94 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

N. Bahlmann, M. Lohmeyer, H. Dötsch, P. Hertel
Integrated magneto-optic Mach-Zehnder interferometer isolator for TE-modes
Electronics Letters 34 (22), 2122-2123 (1998)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, H. Dötsch, P. Hertel
Phase-matched rectangular magnetooptic waveguides for applications in nonreciprocal integrated optics devices: Numerical assessment
Optics Communications 158 (1-6), 189-200 (1998)  Preprint (ps.gz)  Preprint (pdf)  External online source

A. F. Popkov, M. Fehndrich, M. Lohmeyer, H. Dötsch
Nonreciprocal TE-mode phase shift by domain walls in magnetooptic rib waveguides
Applied Physics Letters 72 (20), 2508-2510 (1998)  External online source

M. Lohmeyer
Vectorial wave-matching-method mode analysis of integrated optical waveguides
Optical and Quantum Electronics 30 (5/6), 385-396 (1998)  Preprint (ps.gz)  Preprint (pdf)  External online source

N. Bahlmann, M. Lohmeyer, M. Wallenhorst, H. Dötsch and P. Hertel
An improved design of an integrated optical isolator based on nonreciprocal Mach-Zehnder interferometry
Optical and Quantum Electronics 30 (5/6), 323-334 (1998)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer
Wave-matching-method for mode analysis of dielectric waveguides
Optical and Quantum Electronics 29 (9), 907-922 (1997)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Shamonin, M. Lohmeyer, P. Hertel
Analysis of power-dependent switching between radiatively coupled planar waveguides
Journal of Lightwave Technology 15, 983-989 (1997)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, M. Shamonin, P. Hertel
Integrated optical circulator based on radiatively coupled magnetooptic waveguides
Optical Engineering 36, 889-895 (1997)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Shamonin, M. Lohmeyer, P. Hertel
Directional coupler based on radiatively coupled waveguides
Applied Optics 36, 635-641 (1997)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, M. Shamonin, P. Hertel
Boundary conditions for the finite difference beam propagation method based on plane wave solutions of the Fresnel equation
IEEE Journal of Quantum Electronics 33(2), 279-285 (1997)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Shamonin, M. Lohmeyer, P. Hertel, H. Dötsch
Optimization of a nonreciprocal phase shifter comprising a magneto-optic slab waveguide
Optics Communications 131, 37-40 (1996)  External online source

Book chapters

M. Hammer
Guided wave interaction in photonic integrated circuits - a hybrid analytical / numerical approach to coupled mode theory
in A. Agrawal, T. Benson, R. DeLaRue, G. Wurtz, eds., Recent Trends in Computational Photonics, vol. 204 of Springer Series in Optical Sciences, chapter 3, 77-105, Springer, Cham (2017)  Preprint (ps.gz)  Preprint (pdf)  External online source (chapter)  External online source (book)

K.R. Hiremath, M. Hammer
Circular integrated optical microresonators: Analytical methods and computational aspects
in I. Chremmos, O. Schwelb, N. Uzunoglu, eds., Photonic Microresonator Research and Applications, vol. 156 of Springer Series in Optical Sciences, chapter 2, 29-59, Springer, London (2010)  Preprint (ps.gz)  Preprint (pdf)  External online source (chapter)  External online source (book)

M. Hammer, K.R. Hiremath, R. Stoffer
Analytical approaches to the description of optical microresonator devices
in M. Bertolotti, A. Driessen, and F. Michelotti, eds., Microresonators as building blocks for VLSI photonics, AIP Conference Proceedings, Melville, New York, vol. 709, 48-71 (2004); Proceedings of the International School of Quantum Electronics, 39th course, Erice, Sicily (October 2003)  Preprint (ps.gz)  Preprint (pdf)  External online source

Contributions to conference proceedings

M. Hammer, L. Ebers, H. Farheen, S. Alhaddad, A. Hildebrandt, and J. Förstner
Concepts for oblique semi-guided waves: integrated optics with negative effective permittivity (invited paper)
10th International Conference on Antennas and Electromagnetic Systems (AES 2024), Rome, Italy (2024)  Preprint (pdf)

M. Hammer, S. Babel, H. Farheen, L. Padberg, J.C. Scheytt, C. Silberhorn, J. Förstner
Perturbational estimation of sidewall-roughness induced losses in thin-film lithium niobate channel waveguides
XXX International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2024, Kiel, Germany (submitted, 2024)  Preprint (pdf)

N. Üstün, H. Farheen, M. Hammer, Jens Förstner
Leakage suppression for TM modes in optical waveguides with shallow etching
16th Annual Meeting Photonic Devices, AMPD 2024, Zuse Institute Berlin, Germany (2024)  Preprint (pdf)

M. Hammer, H. Farheen, J. Förstner
Lossless operation of high-contrast integrated optical waveguide gratings
XXIX International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2023, Marseille, France, Proceedings O-5.3, 33 (2023)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, L. Ebers, J. Förstner
Simple beam splitters for semi-guided waves in integrated silicon photonics
15th Annual Meeting Photonic Devices, AMPD 2023, Zuse Institute Berlin, Germany (2023)  Preprint (pdf)

M. Hammer, L. Ebers, J. Förstner
Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber (invited paper)
SPIE Photonics West 2022 / OPTO 2022, San Francisco, USA, Paper No. 12017-39, 11pp. (2022)  Preprint (pdf)
in D.L. Andrews, E.J. Galvez, H. Rubinsztein-Dunlop, eds., Complex Light and Optical Forces XVI, Proceedings of SPIE, Vol. 12017, 120170F (2022)  External online source

M. Hammer
Small-scale online simulations in guided-wave photonics
SPIE Photonics West 2022 / OPTO 2022, San Francisco, USA, Paper No. 12004-72, 12pp. (2022)  Preprint (pdf)
in S.M. García-Blanco, P. Cheben, eds., Integrated Optics: Devices, Materials, and Technologies XXVI, Proceedings of SPIE, Vol. 12004, 1200414 (2022)  External online source

M. Protte, L. Ebers, M. Hammer, J.P. Höpker, M. Albert, V. Quiring, C. Meier, J. Förstner, C. Silberhorn, T.J. Bartley
Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics
OSA Quantum 2.0 Conference, OSA Technical Digest, paper QTh7A.8 (2020)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, M.B. Berkemeier, A. Menzel, J. Förstner
Lossless optical microstrip filters for semi-guided waves at oblique incidence
Theoretical and Numerical Tools for Nanophotonics, TNTN 2020 / XXVIII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2020, Berlin, Germany, Proceedings 43 (2020)  Preprint (pdf)  External online source

M. Hammer
Small-scale online simulations in guided-wave photonics
Theoretical and Numerical Tools for Nanophotonics, TNTN 2020 / XXVIII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2020, Berlin, Germany, Proceedings 87 (2020)  Preprint (ps.gz)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, J.P. Höpker, T. Bartley, J. Förstner
Unidirectional vectorial eigenmode propagation for multiscale tapered waveguides in 3D
XXVII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2019, Málaga, Spain, Proceedings 19 (2019)  Preprint (pdf)  External online source

M. Hammer, L. Ebers, J. Förstner
An open rectangular dielectric optical cavity with unlimited Q
XXVII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2019, Málaga, Spain, Proceedings 3 (2019)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer, L. Ebers, A. Hildebrandt, S. Alhaddad, J. Förstner
Oblique semi-guided waves: 2-D integrated photonics with negative effective permittivity (invited paper)
17th International Conference on Mathematical Methods in Electromagnetic Theory, MMET2018, Kyiv, Ukraine, IEEE Conference Proceedings, 9-15 (2018)  Preprint (ps)  Preprint (pdf)  External online source

M. Hammer, L. Ebers, J. Förstner
Oblique quasi-lossless excitation of a thin silicon slab waveguide
XXVI International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2018, Bad Sassendorf, Germany, Proceedings 35 (2018)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, J. Förstner
Slab waveguide steps with rounded corners at oblique incidence
XXVI International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2018, Bad Sassendorf, Germany, Proceedings 2 (2018)  Preprint (pdf)  External online source

L. Ebers, M. Hammer, J. Förstner
Oblique light propagation along bent slab waveguides
XXV International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2017, Eindhoven, The Netherlands, book of abstracts 13 / OWP1 (2017)  Preprint (pdf)  External online source

M. Hammer
Hybrid Coupled Mode Modelling in 3-D
XXIV International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2016, Warsaw, Poland, book of abstracts, paper O-14 (2016)  Preprint (pdf)  External online source

A. Hildebrandt, S. Alhaddad, M. Hammer, J. Förstner
Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits
Photonics West 2016 / OPTO 2016, San Francisco, USA, Paper No. 9750-45, 7pp. (2016)  Preprint (pdf)
in J.-E. Broquin, G.N. Conti, eds., Integrated Optics: Devices, Materials, and Technologies XX, Proceedings of SPIE, Vol. 9750, 97501B-97501B-7 (2016)  External online source

M. Hammer
Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling (invited paper)
Photonics West 2016 / OPTO 2016, San Francisco, USA, Paper No. 9750-42, 8pp. (2016)  Preprint (ps)  Preprint (pdf)
in J.-E. Broquin; G.N. Conti, eds., Integrated Optics: Devices, Materials, and Technologies XX, Proceedings of SPIE, Vol. 9750, 975018-975018-8 (2016)  External online source

M. Hammer, A. Hildebrandt, J. Förstner
Planar waves that climb dielectric steps
XXIII International Workshop on Optical Waveguide Theory and Numerical Modelling, OWTNM 2015, London, UK, book of abstracts 36 (2015)  Preprint (pdf)  External online source

M. Pollnau, M. Hammer, C. Dongre, H.J.W.M. Hoekstra
Sub-base-pair Resolution During DNA Separation in an Optofluidic Chip
European Conference on Integrated Optics & MicroOptics Conference, Nice, France, paper We4bR2 (2014)  Preprint (pdf)  External online source
International Conference on Micro- and Nano-Engineering, Lausanne, Switzerland, paper ID 8016 (2014)  Preprint (pdf)  External online source
DNA separation and fluorescent detection in an optofluidic chip with sub-base-pair resolution
BIOS, Photonics West, San Francisco, USA, paper number 9320-19 (2015)  Abstract (pdf)  Preprint (pdf)
in B.L. Gray, H. Becker, eds., Microfluidics, BioMEMS, and Medical Microsystems XIII, Proceedings of SPIE (Photonics West 2015 / BIOS 2015), Vol. 9320 (2015)  External online source

M. Hammer
A vectorial solver for the reflection of semi-confined waves at slab waveguide discontinuities for non-perpendicular incidence
XXII International Workshop on Optical Waveguide Theory and Numerical Modelling, Nice, France, book of abstracts 50 (2014)  Preprint (pdf)  External online source

H.J.W.M. Hoekstra, M. Hammer
The relevance of group delay for refractometric sensing
XXII International Workshop on Optical Waveguide Theory and Numerical Modelling, Nice, France, book of abstracts 38 (2014)  Preprint (pdf)  External online source

H.J.W.M. Hoekstra, M. Hammer, C. Dongre, M. Pollnau
Sub-base-pair resolution by electrophoretic separation and fluorescent detection of DNA molecules in an optofluidic chip
International Conference on Luminescence, ICL 2014, Wroclaw, Poland, paper I-44 (2014)  Preprint (pdf)  External online source

F. Civitci, M. Hammer, H.J.W.M. Hoekstra
Reflection of semi-guided plane waves at angled thin-film transitions
XXI International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, Enschede, The Netherlands, book of abstracts P-18 (2013)  Preprint (pdf)  External online source

E.F. Franchimon, K.R. Hiremath, R. Stoffer, M. Hammer
HCMT interaction of whispering gallery modes in circuits of integrated optical microring or -disk resonators
XX International Workshop on Optical Waveguide Theory and Numerical Modelling, Barcelona, Spain, book of abstracts 48 (2012)  Preprint (pdf)  External online source

O.V. Ivanova, R. Stoffer, M. Hammer
Dimensionality reduction for 3D vectorial optical scattering problems
XIX International Workshop on Optical Waveguide Theory and Numerical Modelling, Cambridge, UK, book of abstracts 83 (2010)  Preprint (pdf)  External online source

R. Stoffer, M. Hammer, O.V. Ivanova, H.J.W.M. Hoekstra
A guided mode view on Near-field Scanning Optical Microscopy measurements of optical magnetic fields with slit probes
XIX International Workshop on Optical Waveguide Theory and Numerical Modelling, Cambridge, UK, book of abstracts 62 (2010)  Preprint (pdf)  External online source

M. Hammer
An HCMT model of optical microring-resonators
XIX International Workshop on Optical Waveguide Theory and Numerical Modelling, Cambridge, UK, book of abstracts 69 (2010)  Preprint (pdf)  External online source

O.V. Ivanova, R. Stoffer, L. Kauppinen, M. Hammer
Variational effective index method for 3D vectorial scattering problems in photonics: TE polarization
Progress in Electromagnetics Research Symposium, PIERS 2009, Moscow, Russia; proceedings 1038-1042 (2009)  Abstract (pdf)  Preprint (pdf)

M. Hammer, O.V. Ivanova
On effective index approximations of photonic crystal slabs
• XVIII International Workshop on Optical Waveguide Theory and Numerical Modelling, Jena, Germany, book of abstracts 7 (2009)  Preprint (pdf)
• IEEE/LEOS Benelux Chapter, 13th Annual Symposium, Enschede, The Netherlands, Conference Proceedings, 203-206 (2008)  Preprint (ps)  Preprint (pdf)

O.V. Ivanova, R. Stoffer, M. Hammer
A dimensionality reduction technique for scattering problems in photonics
1st International Workshop on Theoretical and Computational Nano-Photonics TaCoNa-Photonics, Conference Proceedings, 47 (2008)  Preprint (pdf)

O.V. Ivanova, R. Stoffer, M. Hammer, E. van Groesen
A vectorial variational mode solver and its application to piecewise constant and diffused waveguides
12th International Conference on Mathematical Methods in Electromagnetic Theory, MMET08, Odessa, Ukraine, Conference Proceedings, 495-497 (2008)  Preprint (pdf)  External online source
(star) The paper received the MMET Young Scientist Award for the Best Paper, 2nd Prize.

R. Stoffer, A. Sopaheluwakan, M. Hammer, E. van Groesen
A combination of Dirichlet to Neumann operators and perfectly matched layers as boundary conditions for optical finite element simulations
12th International Conference on Mathematical Methods in Electromagnetic Theory, MMET08, Odessa, Ukraine, Conference Proceedings, 124-126 (2008)  Preprint (pdf)  External online source

M. Hammer
Coupled mode modeling in guided-wave photonics: a variational, hybrid analytical-numerical approach
12th International Conference on Mathematical Methods in Electromagnetic Theory, MMET08, Odessa, Ukraine, Conference Proceedings, 107-112 (2008)  Preprint (ps)  Preprint (pdf)  External online source

O.V. Ivanova, R. Stoffer, M. Hammer, E. van Groesen
A Variational Vectorial Mode Solver
XVII International Workshop on Optical Waveguide Theory and Numerical Modelling, Eindhoven, The Netherlands, book of abstracts 5 (2008)  Abstract (pdf)

M. Maksimovic, M. Hammer, E. van Groesen
Variational coupled mode theory and perturbation analysis for 1D photonic crystal structures using quasi-normal modes
XVII International Workshop on Optical Waveguide Theory and Numerical Modelling, Eindhoven, The Netherlands, book of abstracts 61 (2008)  Abstract (pdf)

M. Hammer
Resonator chains of 2-D square dielectric optical microcavities
XVII International Workshop on Optical Waveguide Theory and Numerical Modelling, Eindhoven, The Netherlands, book of abstracts 43 (2008)  Abstract (pdf)

M. Maksimovic, M. Hammer, E. van Groesen
Coupled optical defect microcavities in 1D photonic crystals and quasi-normal modes
in C.M. Greiner, C.A. Waechter, eds., Integrated Optics: Devices, Materials, and Technologies XII, Proceedings of SPIE (Photonics West 2008 / OPTO 2008), Vol. 6896, 689603-1 - 689603-12 (2008)  Preprint (pdf)  External online source

M. Maksimovic, M. Hammer, Z. Jaksic
Thermal radiation antennas made of multilayer structures containing negative index metamaterials
in C.M. Greiner, C.A. Waechter, eds., Integrated Optics: Devices, Materials, and Technologies XII, Proceedings of SPIE (Photonics West 2008 / OPTO 2008), Vol. 6896, 689605-1 - 689605-11 (2008)  Preprint (pdf)  External online source

M. Maksimovic, M. Hammer, E. van Groesen
Coupled optical defect cavities in finite 1-D photonic crystals and quasi-normal modes
NanoNed / MinacNed Symposium, Nijmegen, The Netherlands; book of abstracts 105 (2007)  Abstract (pdf)

R. Stoffer, A. Sopaheluwakan, M. Hammer, E. van Groesen
Helmholtz solver with transparent influx boundary conditions and nonuniform exterior
• XVI International Workshop on Optical Waveguide Theory and Numerical Modelling, Copenhagen, Denmark; book of abstracts 3 (2007)  Abstract (pdf)
• NanoNed / MinacNed Symposium, Nijmegen, The Netherlands; book of abstracts 114 (2007)  Abstract (pdf)

M. Hammer
A variational formulation of guided wave scattering problems
XVI International Workshop on Optical Waveguide Theory and Numerical Modelling, Copenhagen, Denmark; book of abstracts 45 (2007)  Abstract (pdf)

M. Maksimovic, M. Hammer, E. van Groesen
Field representations for optical defect microcavities in 1D grating structures using quasi-normal modes  Poster (pdf)
XVI International Workshop on Optical Waveguide Theory and Numerical Modelling, Copenhagen, Denmark; book of abstracts 11 (2007)  Abstract (pdf)

O.V. Ivanova, M. Hammer, R. Stoffer, E. van Groesen
Variational effective index mode solver  Poster (pdf)
• IEEE/LEOS Benelux Chapter, Proceedings of the 11th Annual Symposium, Eindhoven, The Netherlands, 261-264 (2006)  Abstract (pdf)
• NanoNed / MicroNed Symposium II, Eindhoven, The Netherlands; book of abstracts 169 (2006)  Abstract (pdf)

M. Maksimovic, M. Hammer, E. van Groesen
Analysis of optical defect cavities in 1D grating structures with quasi-normal mode theory  Poster (pdf)
NanoNed / MicroNed Symposium II, Eindhoven, The Netherlands; book of abstracts 170 (2006)  Abstract (pdf)

R. Stoffer, M. Hammer
Defect Grating Simulations: Perturbations with AFM-like Tips  Poster (pdf)
• IEEE/LEOS Benelux Chapter, Proceedings of the 11th Annual Symposium, Eindhoven, The Netherlands, 105-108 (2006)  Abstract (pdf)
• NanoNed / MicroNed Symposium II, Eindhoven, The Netherlands; book of abstracts 87 (2006)  Abstract (pdf)

M. Hammer
Hybrid analytical / numerical coupled-mode modeling of guided wave devices
XV International Workshop on Optical Waveguide Theory and Numerical Modelling, Varese, Italy, book of abstracts ISBN 88-902405-0-4, 49 (2006)  Abstract (ps.gz)  Abstract (pdf)

R. Stoffer, K.R. Hiremath, M. Hammer, L. Prkna, J. Ctyroky
Simulations of vertically-coupled microdisk-resonators by 3-D vectorial coupled mode theory
Proceedings of the 12th European Conference on Integrated Optics ECIO'05, Grenoble, France, 372-375 (2005)  Preprint (ps.gz)  Preprint (pdf)

K.R. Hiremath, M. Hammer
Perturbational evaluation of bend mode phase shifts for the tuning of cylindrical microresonators
Proceedings of the 12th European Conference on Integrated Optics ECIO'05, Grenoble, France, 367 (2005)  Preprint (ps.gz)  Preprint (pdf)

D. Yudistira, D.A.I. Marpaung, H.P. Handoyo, H.J.W.M. Hoekstra, M. Hammer, M.O. Tjia, A.A. Iskandar
Theory of slow light excitation in 1D photonic crystals
IEEE/LEOS Benelux Chapter, Proceedings of the 9th Annual Symposium, Ghent, Belgium, 45-48 (2004)  Abstract (ps.gz)  Abstract (pdf)

K.R. Hiremath, R. Stoffer, M. Hammer
Multimode circular integrated optical microresonators: Coupled mode theory modeling
IEEE/LEOS Benelux Chapter, Proceedings of the 9th Annual Symposium, Ghent, Belgium, 79-82 (2004)  Abstract (ps.gz)  Abstract (pdf)

M. Hammer
Modeling of photon scanning tunneling microscopy by 2D quadridirectional eigenmode expansion
• Proceedings of the 12th International Workshop on Optical Waveguide Theory and Numerical Modelling, Ghent, Belgium, ISBN 90-76-54603-7, 72 (2004)  Abstract (ps.gz)  Abstract (pdf)
• Proceedings Progress in Electromagnetic Research Symposium, PIERS 2004, ISBN 88-8492-268-2, 397 (2004)  Abstract (ps.gz)  Abstract (pdf)

R. Stoffer, K.R. Hiremath, M. Hammer
Comparison of coupled mode theory and FDTD simulations of coupling between bent and straight optical waveguides
in M. Bertolotti, A. Driessen, and F. Michelotti, eds., Microresonators as building blocks for VLSI photonics, AIP Conference Proceedings, Melville, New York, vol. 709, 366-377 (2004); Proceedings of the International School of Quantum Electronics, 39th course, Erice, Sicily (October 2003)  Preprint (ps.gz)  Preprint (pdf)

K.R. Hiremath, R. Stoffer, M. Hammer
Coupled Mode Theory and FDTD Simulations of the Coupling Between Bent and Straight Optical Waveguides
IEEE/LEOS Benelux Chapter, Proceedings of the 8th Annual Symposium, Enschede, The Netherlands, 33-36 (2003)  Preprint (pdf)

M. Hammer
Quadridirectional eigenmode expansion scheme for 2-D modeling of wave propagation in integrated optics
Proceedings of the 11th International Workshop on Optical Waveguide Theory and Numerical Modelling, Prague, Czech Republic, ISBN 80-01-02720-1, 102 (2003)  Abstract (ps.gz)  Abstract (pdf)

M. Hammer, D. Yudistira
Grating assisted rectangular integrated optical microresonators
in J. Ctyroky, M. Hubalek, F. Ondracek, eds., Proceedings of the 11th European Conference on Integrated Optics ECIO'03, ISBN 80-01-02729-5, Vol. 1, 357-360 (2003)  Preprint (ps.gz)  Preprint (pdf)

M. Lohmeyer, R. Stoffer, L. Wilkens, H. Dötsch
Integrated optical cross strip interferometer
Proceedings of SPIE, Vol. 4277, Integrated Optics Devices V, 230-241 (2001)  Preprint (ps.gz)  Preprint (pdf)

M. Lohmeyer, T.M. Koster, P.V. Lambeck
Integrated optical polarizer based on the cross strip interferometer configuration
IEEE/LEOS Benelux Chapter, Proceedings of the 5th Annual Symposium, Delft, The Netherlands, 239-242 (2000)  Preprint (ps.gz)  Preprint (pdf)

J.A. Loaiza, D.J.W. Klunder, H.F. Bulthuis, M. Lohmeyer, H.J.W.M. Hoekstra, A. Driessen
Application of the Coupled Mode Theory to the problem of coupling between bent and straight waveguides
IEEE/LEOS Benelux Chapter, Proceedings of the 5th Annual Symposium, Delft, The Netherlands, 215-218 (2000)  Preprint (ps.gz)  Preprint (pdf)

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, P. Hertel
Wave-matching-simulations of integrated optical coupler structures
Proceedings of SPIE, Vol. 3620, Integrated Optics Devices III, 68-78 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, P. Hertel
Perturbational estimation of geometry tolerances for rectangular integrated optics devices
Proceedings of SPIE, Vol. 3620, Integrated Optics Devices III, 311-319 (1999)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Lohmeyer, M. Shamonin, N. Bahlmann, P. Hertel, H. Dötsch
Radiatively coupled waveguide concept for an integrated magnetooptic circulator
MRS Symposium Proceedings, Vol. 517, High-Density Magnetic Recording and Integrated Magneto-Optics: Materials and Devices, 519-524 (1998)  Preprint (ps.gz)  Preprint (pdf)

N. Bahlmann, M. Lohmeyer, M. Wallenhorst, H. Dötsch, P. Hertel
A comparison of an improved design for two integrated optical isolators based on nonreciprocal Mach-Zehnder interferometry
MRS Symposium Proceedings, Vol. 517, High-Density Magnetic Recording and Integrated Magneto-Optics: Materials and Devices, 513-518 (1998)  Preprint (ps.gz)  Preprint (pdf)

M. Wallenhorst, V. Backherms, A. Josef, N. Bahlmann, M. Lohmeyer, P. Hertel, H. Dötsch
Optimized nonreciprocal rib waveguides for integrated magneto-optic isolators
MRS Symposium Proceedings, Vol. 517, High-Density Magnetic Recording and Integrated Magneto-Optics: Materials and Devices, 463-468 (1998)  Preprint (ps.gz)  Preprint (pdf)

M. Shamonin, M. Lohmeyer, P. Hertel, H. Dötsch
Radiatively coupled magneto-optic waveguides
Proceedings of SPIE, Vol. 2695, Functional Photonic and Fiber Devices, 344-354 (1996)

M. Shamonin, M. Lohmeyer, P. Hertel, H. Dötsch
Magneto-optic waveguides: modeling and applications
Proceedings of SPIE, Vol. 2695, Functional Photonic and Fiber Devices, 355-361 (1996)

Talks and poster presentations

N. Üstün, H. Farheen, M. Hammer, Jens Förstner
Leakage suppression for TM modes in optical waveguides with shallow etching
16th Annual Meeting Photonic Devices, AMPD 2024, Zuse Institute Berlin, Germany (2024)  Poster (pdf)

M. Hammer, H. Farheen, J. Förstner
Thin-film lithium niobate slab waveguides
PhoQS Future Seminar, Paderborn University, Paderborn, Germany (2024)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer, H. Farheen, J. Förstner
Lossless operation of high-contrast integrated optical waveguide gratings
XXIX International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling (OWTNM 2023), Marseille, France (2023)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer, L. Ebers, J. Förstner
Simple beam splitters for semi-guided waves in integrated silicon photonics
15th Annual Meeting Photonic Devices, Zuse Institute Berlin, Germany (2023)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer
Small-scale online simulations in guided-wave photonics
• SPIE Photonics West 2022 / OPTO 2022, San Francisco, California, USA (2022)  Poster (ps.gz)  Poster (pdf)
• SFB/TRR 142 — Kick-Off-Workshop Tailored Non-linear Photonics, Bad Sassendorf, Germany (2022)  Poster (pdf)  Poster, addendum (pdf)

M. Hammer, L. Ebers, J. Förstner
Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber
SPIE Photonics West 2022 / OPTO 2022, San Francisco, California, USA (invited, 2022)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer
Small-scale online simulations in guided-wave photonics
• Theoretical and Numerical Tools for Nanophotonics, TNTN 2020 / XXVIII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, OWTNM 2020, Berlin, Germany (2020)  Poster (ps.gz)  Poster (pdf)
• Seminar Theoretical Electrical Engineering, University of Paderborn, Germany (2019)  Electronic presentation (html)

M. Hammer, L. Ebers, J. Förstner
An open rectangular dielectric optical cavity with unlimited Q
XXVII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, Málaga, Spain (2019)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer, L. Ebers, A. Hildebrandt, S. Alhaddad, J. Förstner
Oblique semi-guided waves: 2-D integrated photonics with negative effective permittivity
17th International Conference on Mathematical Methods in Electromagnetic Theory, MMET2018, Kyiv, Ukraine (invited, 2018)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer, L. Ebers, J. Förstner
Oblique quasi-lossless excitation of a thin silicon slab waveguide
XXVI International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, Bad Sassendorf, Germany (2018)  Poster (ps.gz)  Poster (pdf)

M. Hammer, S. Alhaddad, J. Förstner
Hybrid Coupled Mode Modelling in 3-D: Perturbed and Coupled Channels, and Waveguide Crossings
• Matheon Workshop Photonic Devices, 11th Annual Meeting, Zuse Institute Berlin, Germany (2018)  Sheets (pdf)  Electronic presentation (pdf)
• Seminar Theoretical Electrical Engineering, University of Paderborn, Germany (2016)  Sheets (pdf)  Electronic presentation (pdf)

L. Ebers, M. Hammer, J. Förstner
Oblique light propagation along bent slab waveguides
XXV International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, Eindhoven, The Netherlands (2017)  Poster (pdf)

M. Hammer
Wave Interaction in Photonic Integrated Circuits: Hybrid Analytical / Numerical Coupled Mode Modeling
Graduate Lectures on Optoelectronics and Photonics, GRK 1464, Paderborn University, Germany (2016)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer
Hybrid Coupled Mode Modelling in 3-D
XXIV International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, Warsaw, Poland (2016)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer
Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling
Opto 2016, Photonics West 2016, San Francisco, California, USA (invited, 2016)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer, A. Hildebrandt, J. Förstner
Planar waves that climb dielectric steps
XXIII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, London, UK (2015)  Sheets (pdf)  Electronic presentation (pdf)

M. Hammer
Planar waves that climb dielectric steps
Seminar Theoretical Electrical Engineering, University of Paderborn, Germany (2014)  Electronic presentation (pdf)

M. Hammer
A vectorial solver for the reflection of semi-confined waves at slab waveguide discontinuities for non-perpendicular incidence
XXII International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, Nice, France (2014)  Poster (ps.gz)  Poster (pdf)

F. Civitci, M. Hammer, H.J.W.M. Hoekstra
Reflection of semi-guided plane waves at angled thin-film transitions
XXI International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling, Enschede, The Netherlands (2013)  Poster (ps.gz)  Poster (pdf)

M. Hammer
Guided wave interaction in photonic integrated circuits
• International Conference on Applied Mathematics, Modeling, Analysis & Computation, ICAM 2012, Hong Kong (invited, 2012)  Abstract (pdf)  Sheets (ps.gz)  Electronic presentation (pdf)
• Seminar Theoretical Photonics / Theoretical Electrical Engineering, University of Paderborn, Germany (2013)  Electronic presentation (pdf)

E.F. Franchimon, K.R. Hiremath, R. Stoffer, M. Hammer
HCMT interaction of whispering gallery modes in circuits of circular integrated optical micro-resonators
XXth International Workshop on Optical Waveguide Theory and Numerical Modelling, Barcelona, Spain (2012)  Sheets (ps.gz)  Electronic presentation (pdf)

M. Hammer
Coupled Mode Modeling in Integrated Optics: a Variational, Hybrid Analytical-Numerical Approach
IOMS seminar, University of Twente, Enschede, The Netherlands (2011)  Sheets (ps.gz)  Electronic presentation (pdf)

M. Hammer
HCMT models of optical microring-resonator circuits
XVIV International Workshop on Optical Waveguide Theory and Numerical Modelling, Cambridge, UK (2010)  Poster (ps.gz)  Poster (pdf)

O.V. Ivanova, R. Stoffer, L. Kauppinen, M. Hammer
Variational effective index method for 3D vectorial scattering problems in photonics: TE polarization
MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands, Annual Meeting (2009)  Poster (pdf)
(star) The MESA+ poster prize 2009 (first prize) of the MESA+ annual meeting has been awarded for the poster.

M. Hammer, O.V. Ivanova
On effective index approximations of photonic crystal slabs
• XVIII International Workshop on Optical Waveguide Theory and Numerical Modelling, Jena, Germany (2009)  Sheets (ps.gz)  Electronic presentation (pdf)
• IEEE/LEOS Benelux Chapter, 13th Annual Symposium, Enschede, The Netherlands (2008)  Poster (ps.gz)  Poster (pdf)

O.V. Ivanova, R. Stoffer, M. Hammer
A dimensionality reduction technique for scattering problems in photonics
1st International Workshop on Theoretical and Computational Nano-Photonics TaCoNa-Photonics 2008, Bad Honnef, Germany (2008)  Poster (pdf)

M. Hammer
Coupled mode modeling in guided-wave photonics: a variational, hybrid analytical-numerical approach
12th International Conference on Mathematical Methods in Electromagnetic Theory, MMET08, Odessa, Ukraine (invited, 2008)  Sheets (ps.gz)  Electronic presentation (pdf)

M. Hammer
Resonator chains of 2-D square dielectric optical microcavities  Poster (ps.gz)  Poster (pdf)
• XVII International Workshop on Optical Waveguide Theory and Numerical Modelling, Eindhoven, The Netherlands (2008)
• MESA+ Institute for Nanotechnology, annual symposium 2008, University of Twente, Enschede, The Netherlands (2008)

M. Maksimovic, M. Hammer, E. van Groesen
Coupled optical defect cavities in finite 1-D photonic crystals and quasi-normal modes
NanoNed / MinacNed Symposium, Nijmegen, The Netherlands (2007)  Poster (pdf)

R. Stoffer, A. Sopaheluwakan, M. Hammer, E. van Groesen
Helmholtz solver with transparent influx boundary conditions and nonuniform exterior  Poster (pdf)
• NanoNed / MinacNed Symposium, Nijmegen, The Netherlands (2007)
• MESA+ Institute for Nanotechnology, annual symposium 2007, University of Twente, Enschede, The Netherlands (2007)

M. Hammer
A variational formulation of guided wave scattering problems
XVI International Workshop on Optical Waveguide Theory and Numerical Modelling, Copenhagen, Denmark (2007)  Poster (ps.gz)  Poster (pdf)  Sheets (ps.gz)  Electronic presentation (pdf)

M. Hammer
Computational photonics - scattering problems in guided wave optics
TW colloquium, Department of Applied Mathematics, University of Twente, Enschede, The Netherlands (2007)  Sheets (ps.gz)  Electronic presentation (pdf)

M. Hammer
Hybrid analytical / numerical coupled-mode modeling of guided wave devices
International Workshop on Optical Waveguide Theory and Numerical Modelling, Varese, Italy (2006)  Sheets (ps.gz)  Electronic presentation (pdf)

M. Hammer, R. Stoffer
A 2-D PSTM/NSOM microscope model
NanoNed/MicroNed Symposium, Groningen, The Netherlands (2005)  Poster (ps.gz)  Pages (ps.gz)

K.R. Hiremath, R. Stoffer, M. Hammer, E. van Groesen
Coupled mode theory modeling of circular integrated optical microresonators
International symposium on modern optics & its applications, ISMOA'05, Bandung, Indonesia (2005)  Sheets (ps.gz)  Electronic presentation (pdf)

R. Stoffer, K.R. Hiremath, M. Hammer, L. Prkna, J. Ctyroky
Simulations of vertically-coupled circular microresonators by 3-D vectorial coupled mode theory
12th European Conference on Integrated Optics, ECIO'05, Grenoble, France (2005)  Sheets (ps.gz)  Electronic presentation (pdf)

M. Hammer
Simulations in integrated optics & Semianalytical treatment of rectangular 2D Helmholtz problems
CIPS Workshop "Maxwell equations", University of Twente, The Netherlands (2004)  Sheets (ps.gz)  Electronic presentation (pdf)  Electronic presentation (html)

M. Hammer
Modeling of photon scanning tunneling microscopy by 2-D quadridirectional eigenmode expansion
• Progress in Electromagnetics Research Symposium, PIERS 2004, Pisa, Italy (2004)  Sheets (ps.gz)  Electronic presentation (pdf)
• International Workshop on Optical Waveguide Theory and Numerical Modelling, Ghent, Belgium (2004)  Poster (ps.gz)  Pages (ps.gz)

M. Hammer, K.R. Hiremath, R. Stoffer
Analytical approaches to the description of optical microresonator devices
International School of Quantum Electronics "Microresonators as building blocks for VLSI photonics", Erice, Sicily, Italy (invited, 2003)  Sheets (ps.gz)  Electronic presentation (pdf)  Electronic presentation (html)

M. Hammer
Quadridirectional mode expansion modeling in integrated optics
Kleinheubacher Tagung, Miltenberg, Germany (2003)  Sheets (ps.gz)  Electronic presentation (pdf)  Electronic presentation (html)

M. Hammer
Quadridirectional eigenmode expansion scheme for 2-D modeling of wave propagation in integrated optics
International Workshop on Optical Waveguide Theory and Numerical Modelling, Prague, Czech Republic (2003)  Sheets (ps.gz)

M. Hammer, D. Yudistira
Grating assisted rectangular integrated optical microresonators
11th European Conference on Integrated Optics, ECIO 2003, Prague, Czech Republic (2003)  Sheets (ps.gz)

M. Hammer, E. van Groesen
Analysis of resonant coupling between dielectric waveguides via rectangular microcavities
Progress in Electromagnetics Research Symposium, PIERS 2002, Cambridge, Massachusetts, USA (2002)  Sheets (ps.gz)

M. Hammer, E. van Groesen
Total guided light reflection at facets of high contrast dielectric multimode slabs
Progress in Electromagnetics Research Symposium, PIERS 2002, Cambridge, Massachusetts, USA (2002)  Poster (ps.gz)  Pages (ps.gz)

M. Hammer
Resonant coupling of optical waveguides via rectangular microcavities: The coupled guided mode perspective
International Workshop on Optical Waveguide Theory and Numerical Modelling, Nottingham, England (2002)  Poster (ps.gz)  Pages (ps.gz)

M. Hammer
Modeling of planar photonic devices by mode expansion techniques
Fraunhofer-Institut für Integrierte Schaltungen, Bereich Bauelementetechnologie, Erlangen, Germany (2001)  Sheets (ps.gz)

M. Hammer, E. van Groesen
Modeling of integrated optical microresonator devices with rectangular cavities
Annual meeting of the MESA+ Research Institute, University of Twente, Enschede, The Netherlands (2001)  Poster (ps.gz)  Pages (ps.gz)

M. Lohmeyer
Mode expansion modeling of rectangular integrated optical microresonators
International Workshop on Optical Waveguide Theory and Numerical Modelling, Paderborn, Germany (2001)  Sheets (ps.gz)

M. Lohmeyer, R. Stoffer, L. Wilkens, H. Dötsch
Integrated optical cross strip interferometer
Optoelectronics 2001, Photonics West 2001, San Jose, California, USA (2001)  Sheets (ps.gz)

M. Lohmeyer, T. M. Koster, P. V. Lambeck
Integrated optical polarizer based on the cross strip interferometer configuration
5th Annual Symposium of the IEEE/LEOS Benelux Chapter, Delft University of Technology, Delft, The Netherlands (2000)  Poster (ps.gz)  Pages (ps.gz)

M. Lohmeyer, R. Stoffer, L. Wilkens, H. Dötsch
Integrated optical cross strip interferometer
Annual meeting of the MESA+ Research Institute, University of Twente, Enschede, The Netherlands (2000)  Poster (ps.gz)  Pages (ps.gz)

M. Lohmeyer, R. Stoffer, L. Wilkens, O. Zhuromskyy, H. Dötsch, P. Hertel
Integrated magnetooptic cross strip isolator
International Workshop on Optical Waveguide Theory and Numerical Modelling, Prague, Czech Republic (2000)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, H. Dötsch, P. Hertel
Modeling of nonreciprocal integrated magnetooptic devices
University of Twente, Faculty of Mathematical Sciences, Enschede, The Netherlands (2000)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, H. Dötsch, P. Hertel
Guided waves in rectangular integrated magnetooptic devices
University of Nottingham, School of Electrical and Electronic Engineering, Nottingham, England (1999)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, H. Dötsch, P. Hertel
Unidirectional magnetooptic polarization converters
International Workshop on Optical Waveguide Theory and Numerical Modelling, Saint-Etienne, France (1999)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, P. Hertel
Perturbational Estimation of Geometry Tolerances for Rectangular Integrated Optics Devices
Optoelectronics '99, Photonics West '99, San Jose, California, USA (1999)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, P. Hertel
Wave-Matching-Simulations of Integrated Optical Coupler Structures
Optoelectronics '99, Photonics West '99, San Jose, California, USA (1999)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, O. Zhuromskyy, P. Hertel
Geometry Tolerance Estimation for Rectangular Dielectric Waveguide Devices by Means of Perturbation Theory
International Workshop on Optical Waveguide Theory and Numerical Modelling, Hagen, Germany (1998)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, P. Hertel
Wave-Matching-Simulationen integriert optischer Kopplerstrukturen
Diskussionstagung Modellierung und Simulation integriert optischer Schaltungen und mikrooptischer Systeme, Heinrich-Hertz-Institut, Berlin, Germany (1998)  Sheets (ps.gz)

M. Lohmeyer, N. Bahlmann, P. Hertel
Modal Analysis of Dielectric Rib Waveguides by a Wave Matching Method
International Workshop on Optical Waveguide Theory and Numerical Modelling, University of Twente, Enschede, The Netherlands (1997)  Sheets (ps.gz)

M. Lohmeyer, M. Shamonin, P. Hertel
Effektive Transparente Randbedingungen für Finite Differenzen Ausbreitungsrechnungen
• Sommerschule Partielle Differentialgleichungen, Numerik und Anwendungen, Jülich, Germany (1996)
• 60. Physikertagung der DPG, Jena, Germany (1996)   Poster (ps.gz)

Ph.D. thesis

M. Lohmeyer
Guided waves in rectangular integrated magnetooptic devices
Cuvillier Verlag, Göttingen, 1999
ISBN 3-89712-610-9  ps.gz document  pdf document

Diploma thesis

M. Lohmeyer
Ausbreitungsrechnungen für integrierte magnetooptische Wellenleiter
-- Methode der finiten Differenzen --
Fachbereich Physik, Universität Osnabrück, 1995  ps.gz document  pdf document

Miscellaneous

L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R. Sharapova
Flexible source of correlated photons based on LNOI rib waveguides
University of Paderborn, technical report, 20 pages (2021) arXiv:2110.10562  External online source

M. Hammer, J. Förstner, L. Ebers
Optischer Übergang zwischen zwei optischen Schichtwellenleitern und Verfahren zum Übertragen von Licht
German Patent DE 10 2018 108 110 B3, Deutsches Patent- und Markenamt (filed 05.04.2018, issued 31.01.2019)  Patentschrift (pdf)  External online source  External online source  External online source

M. Hammer, A. Hildebrandt, J. Förstner
Full resonant transmission of semi-guided planar waves through slab waveguide steps at oblique incidence
University of Paderborn, technical report, 12 pages (2015)  Preprint (ps.gz)  Preprint (pdf)
arXiv:1502.07619  External online source

M. Hammer, M. Maksimovic, M. Akin Sefunc, R. Stoffer, guest editors
Preface: The 2013 International Workshop on Optical Wave & Waveguide Theory and Numerical Modelling
Optical and Quantum Electronics 46 (3), 381-383 (2014)  Preprint (ps.gz)  Preprint (pdf)  External online source

L. Agazzi, B.I. Akca S. Aravazhi, F. Ay, E.H. Bernhardi, F. Civitci, K. van Dalfsen, M. Dijkstra, S.M. Garcia Blanco D. Geskus, M. Hammer, H.J.W.M. Hoekstra, A.J.F. Hollink, N. Ismail, V.S. Pham, R.M. de Ridder, G. Sengo, K. Worhoff, M.Pollnau
Integrated optical microsystems: guiding light into the future, SV Arago, University of Twente, Focus Magazine 41 (4), 10-13 (2011)  Preprint (pdf)

O.V. Ivanova, R. Stoffer, M. Hammer
A variational mode solver for optical waveguides based on quasi-analytical vectorial slab mode expansion
University of Twente, technical report, 19 pages (2009)  Preprint (ps.gz)  Preprint (pdf)
arXiv:1307.1315 [physics.optics]   External online source

M. Hammer, H.J.W.M. Hoekstra, B.P. de Hon, guest editors
Preface to the Special Issue on Optical Waveguide Theory and Numerical Modelling
Optical and Quantum Electronics 40 (11-12), 783-785 (2009)  Preprint (ps.gz)  Preprint (pdf)  External online source

M. Hammer
Computational photonics - scattering problems in guided wave optics
Colloquium of the Department of Mathematics, University of Twente, extended summary, 4 pages (2007)  Preprint (ps.gz)  Preprint (pdf)