Grating couplers in thick rib SOI waveguides for TE and TM polarizations

C. Alonso-Ramos; A. Ortega-Moñux; R. Halir; L. Zavargo-Peche; I. Molina-Fernández; P. Cheben; D.-X. Xu; S. Janz

doi:10.1117/12.922713

10 May 2012 Grating couplers in thick rib SOI waveguides for TE and TM polarizations

C. Alonso-Ramos, A. Ortega-Moñux, R. Halir, L. Zavargo-Peche, I. Molina-Fernández, P. Cheben, D.-X. Xu, S. Janz

Proceedings Volume 8431, Silicon Photonics and Photonic Integrated Circuits III; 84310E (2012) https://doi.org/10.1117/12.922713
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

Grating couplers have shown promising performance in terms of coupling efficiency and alignment tolerances as an interface between optical fibers and nanometric silicon-on-insulator (SOI) waveguides. In this paper we review our previous work, where the implementation of a fiber to chip grating coupler in micrometric rib SOI waveguide was demonstrated for the first time, showing measured coupling efficiency of -2.2dB for transverse-electric (TE) polarization. We also propose a new grating design that achieves a calculated coupling efficiency of -2dB for transverse-magnetic (TM) light.

Citation Download Citation

C. Alonso-Ramos, A. Ortega-Moñux, R. Halir, L. Zavargo-Peche, I. Molina-Fernández, P. Cheben, D.-X. Xu, and S. Janz "Grating couplers in thick rib SOI waveguides for TE and TM polarizations", Proc. SPIE 8431, Silicon Photonics and Photonic Integrated Circuits III, 84310E (10 May 2012); https://doi.org/10.1117/12.922713

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