High-extinction-ratio TE/TM selective Bragg grating filters on silicon-on-insulator

Klitis, Charalambos and Cantarella, Giuseppe and Strain, Michael J. and Sorel, Marc (2017) High-extinction-ratio TE/TM selective Bragg grating filters on silicon-on-insulator. Optics Letters, 42 (15). pp. 3040-3043. ISSN 0146-9592

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    Abstract

    We report on the design and fabrication of TE and TM polarization selective Bragg grating filters in the form of sinusoidal perturbations on the waveguide sidewall and etched holes on the top of the waveguide, respectively. Combining the two geometries on a silicon-on-insulator waveguide resulted in Bragg grating filters with high extinction ratios of approximately 60 dB.