Hammer, M., Farheen, H., &; Förstner, J. (2023). How to suppress radiative losses in high-contrast integrated Bragg gratings. Journal of the Optical Society of America B, 40(4), 862.https://doi.org/10.1364/josab.485725 

Hammer, M., Ebers, L., &; Förstner, J. (2022). Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber. In D. L. Andrews, E. J. Galvez, &; H. Rubinsztein-Dunlop (Eds.), Complex Light and Optical Forces XVI (p. 120170F). SPIE.https://doi.org/10.1117/12.2612179 

Ebers, L. (2022). Semi-guided waves in integrated optical waveguide structures.https://doi.org/10.17619/UNIPB/1-1288 

Nikbakht, H., Khoshmehr, M. T., van Someren, B., Teichrib, D., Hammer, M., Förstner, J., &; Akca, B. I. (2022). Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint. Optics Letters, 48(2), 207.https://doi.org/10.1364/ol.476537 

Ebers, L., Ferreri, A., Hammer, M., Albert, M., Meier, C., Förstner, J., &; Sharapova, P. R. (2022). Flexible source of correlated photons based on LNOI rib waveguides. Journal of Physics: Photonics, 4, 025001.https://doi.org/10.1088/2515-7647/ac5a5b 

Hammer, M. (2022). Small-scale online simulations in guided-wave photonics. In S. M. García-Blanco &; P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVI (p. 1200414). SPIE.https://doi.org/10.1117/12.2612208 

Hammer, M., Ebers, L., &; Förstner, J. (2021). Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. OSA Continuum, 4(12), 3081.https://doi.org/10.1364/osac.437549 

Protte, M., Ebers, L., Hammer, M., Höpker, J. P., Albert, M., Quiring, V., Meier, C., Förstner, J., Silberhorn, C., &; Bartley, T. (2020). Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics. OSA Quantum 2.0 Conference, Article QTA.8.https://doi.org/10.1364/quantum.2020.qth7a.8 

Ebers, L., Hammer, M., &; Förstner, J. (2018). Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges. Optics Express, 26(14), 18621–18632.https://doi.org/10.1364/OE.26.018621 

Hammer, M. (2017). Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory. In A. Agrawal (Ed.), Recent Trends in Computational Photonics (204th ed., Vol. 204, pp. 77–105). Springer.

Hammer, M., Alhaddad, S., &; Förstner, J. (2017). Hybrid coupled-mode modeling in 3D: perturbed and coupled channels, and waveguide crossings. Journal of the Optical Society of America B, 34(3), 613–624.https://doi.org/10.1364/josab.34.000613 

Ebers, L., Hammer, M., &; Förstner, J. (2017). Spiral modes supported by circular dielectric tubes and tube segments. Optical and Quantum Electronics, 49(4), 49:176.https://doi.org/10.1007/s11082-017-1011-x 

Hildebrandt, A., Alhaddad, S., Hammer, M., &; Förstner, J. (2016). Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits. In J.-E. Broquin &; G. Nunzi Conti (Eds.), Integrated Optics: Devices, Materials, and Technologies XX. SPIE.https://doi.org/10.1117/12.2214460 

Hammer, M. (2016). Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling. In J.-E. Broquin &; G. Nunzi Conti (Eds.), Integrated Optics: Devices, Materials, and Technologies XX (pp. 975018-975018–8). San Francisco, USA: SPIE.https://doi.org/10.1117/12.2214331 

Civitci, F., Hammer, M., &; Hoekstra, H. J. W. M. (2015). Planar prism spectrometer based on adiabatically connected waveguiding slabs. Optics Communications, 365, 29–37.https://doi.org/10.1016/j.optcom.2015.11.066 

Hammer, M., Hildebrandt, A., &; Förstner, J. (2015). Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence. Journal of Lightwave Technology, 34(3), 997–1005.https://doi.org/10.1109/jlt.2015.2502431 

Hammer, M., Hildebrandt, A., &; Förstner, J. (2015). How planar optical waves can be made to climb dielectric steps. Optics Letters, 40(16), 3711–3714.https://doi.org/10.1364/ol.40.003711 

Hammer, M. (2014). Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver. Optics Communications, 338, 447–456.https://doi.org/10.1016/j.optcom.2014.09.087 

Hoekstra, H. J. W. M., &; Hammer, M. (2014). General relation for group delay and the relevance of group delay for refractometric sensing. Journal of the Optical Society of America B, 31(7).https://doi.org/10.1364/josab.31.001561