Bricked and evanescently-coupled topologies: expanding the portfolio of subwavelength metamaterial silicon photonic devices

Juan Gonzalo Wangüemert-Pérez; Carlos Pérez-Armenta; Pablo Ginel-Moreno; José Manuel Luque-González; Abdelfettah Hadij-El Houati; Alejandro Sánchez Postigo; Jose de Oliva Rubio; Alejandro Ortega-Moñux; Robert Halir; Jens H. Schmid; Pavel Cheben; Íñigo Molina-Fernández

doi:10.1117/12.2651817

17 March 2023 Bricked and evanescently-coupled topologies: expanding the portfolio of subwavelength metamaterial silicon photonic devices

Juan Gonzalo Wangüemert-Pérez, Carlos Pérez-Armenta, Pablo Ginel-Moreno, José Manuel Luque-González, Abdelfettah Hadij-El Houati, Alejandro Sánchez Postigo, Jose de Oliva Rubio, Alejandro Ortega-Moñux, Robert Halir, Jens H. Schmid, Pavel Cheben, Íñigo Molina-Fernández

Author Affiliations +

Proceedings Volume PC12424, Integrated Optics: Devices, Materials, and Technologies XXVII; PC1242405 (2023) https://doi.org/10.1117/12.2651817
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We present two novel topologies of subwavelength grating (SWG) waveguides: the bricked-SWG and the evanescently-coupled-SWG. The bricked topology enables accurate control of waveguide anisotropy while maintaining the index and dispersion engineering advantage intrinsic to SWG waveguides. The evanescently-coupled-SWG allows unprecedented control of the strength of the modal perturbation in waveguide Bragg gratings and nanophotonic antennas. Both topologies leverage a Manhattan-like pattern, with pixel sizes compatible with deep-uv lithography. Our recent results will be discussed, focusing on polarization-independent multimode interference couplers for the O and C bands and a millimeter-long narrow-beam steerable optical antenna array with angular divergence of only 1.8o×0.2o.

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Juan Gonzalo Wangüemert-Pérez, Carlos Pérez-Armenta, Pablo Ginel-Moreno, José Manuel Luque-González, Abdelfettah Hadij-El Houati, Alejandro Sánchez Postigo, Jose de Oliva Rubio, Alejandro Ortega-Moñux, Robert Halir, Jens H. Schmid, Pavel Cheben, and Íñigo Molina-Fernández "Bricked and evanescently-coupled topologies: expanding the portfolio of subwavelength metamaterial silicon photonic devices", Proc. SPIE PC12424, Integrated Optics: Devices, Materials, and Technologies XXVII, PC1242405 (17 March 2023); https://doi.org/10.1117/12.2651817

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KEYWORDS

Metamaterials

Silicon photonics

Waveguides

Photonic integrated circuits

Polarization

Silicon

Silica

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