Silicon photonic mode multiplexers based on subwavelength metamaterials and on-chip beamforming

D. González-Andrade; R. Fernández de Cabo; J. Vilas; T. T. D. Dinh; J. M. Luque-González; D. Oser; G. Aubin; F. Amar; D. Pérez-Galacho; I. Olivares; A. Dias; R. Halir; A. Ortega-Moñux; J. G. Wangüemert-Pérez; Í. Molina-Fernández; E. Cassan; D. Marris-Morini; P. Cheben; L. Vivien; A. V. Velasco; C. Alonso-Ramos

doi:10.1117/12.2649751

17 March 2023 Silicon photonic mode multiplexers based on subwavelength metamaterials and on-chip beamforming

D. González-Andrade, R. Fernández de Cabo, J. Vilas, T. T. D. Dinh, J. M. Luque-González, D. Oser, G. Aubin, F. Amar, D. Pérez-Galacho, I. Olivares, A. Dias, R. Halir, A. Ortega-Moñux, J. G. Wangüemert-Pérez, Í. Molina-Fernández, E. Cassan, D. Marris-Morini, P. Cheben, L. Vivien, A. V. Velasco, C. Alonso-Ramos

Author Affiliations +

Proceedings Volume 12425, Smart Photonic and Optoelectronic Integrated Circuits 2023; 1242506 (2023) https://doi.org/10.1117/12.2649751
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Integration of photonic circuits on silicon offers a unique opportunity to address the scaling of inter- and intra-chip communications in an energy-efficient and cost-effective manner. Mode-division multiplexing (MDM) is deemed as one of the most promising technologies to increase aggregated data bandwidth and avoid a communication capacity crunch. In this invited talk, we review our latest advances on integrated silicon mode multiplexers, including new topologies based on subwavelength grating (SWG) metamaterials for extended broadband operation and higher-order mode support. Specifically, we report on an ultra-broadband multiplexer based on a phase shifter and a multimode interference (MMI) coupler both engineered with subwavelength metamaterials. Experimental measurements of a complete multiplexer-demultiplexer link show losses lower than 2 dB and crosstalk below -17 dB over a bandwidth of 245 nm (1427 – 1672 nm).

Conference Presentation

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D. González-Andrade, R. Fernández de Cabo, J. Vilas, T. T. D. Dinh, J. M. Luque-González, D. Oser, G. Aubin, F. Amar, D. Pérez-Galacho, I. Olivares, A. Dias, R. Halir, A. Ortega-Moñux, J. G. Wangüemert-Pérez, Í. Molina-Fernández, E. Cassan, D. Marris-Morini, P. Cheben, L. Vivien, A. V. Velasco, and C. Alonso-Ramos "Silicon photonic mode multiplexers based on subwavelength metamaterials and on-chip beamforming", Proc. SPIE 12425, Smart Photonic and Optoelectronic Integrated Circuits 2023, 1242506 (17 March 2023); https://doi.org/10.1117/12.2649751

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