Integrated TE/TM grating filters with high extinction ratio

Klitis, Charalambos and Cantarella, Giuseppe and Strain, Michael J. and Sorel, Marc (2016) Integrated TE/TM grating filters with high extinction ratio. In: 2016 Photonics North, PN 2016. IEEE, Piscataway, NJ. ISBN 9781509013739

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Abstract

An analysis of sidewall grating filters with sinusoidal perturbation is presented. Measurements indicate that the maximum extinction-ratio of the filters is limited by the polarisation scattering in the waveguide. We show that TM polarisation absorbers and filters offer a simple design solution that can provide extinction ratio values up to 60 dB.