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Authors: D. Taillaert, H. Chong, P. Borel, L. Frandsen, R.M. De La Rue, R. Baets
Title: A compact two-dimensional grating coupler used as a polarization splitter
Format: International Journal
Publication date: 9/2003
Journal/Conference/Book: IEEE Photonics Technology Letters
Volume(Issue): 15(9) p.1249-1251
Internal Reference: [N-238]
Download: Download this Publication (519KB) (519KB)

Abstract

We demonstrate a novel polarization splitter based on a two-dimensional grating etched in a silicon-on-insulator waveguide. The device couples orthogonal modes from a single-mode optical fober into identical modes of two planar ridge waveguides. the extinction ratio is better than 18 dB in the wavelength range of 1530-1560 nm and the coupling efficiency is approximately 20%. The device is very compact nd couples light only to transverse-electric modes of the planar waveguides. Therefore, ot may be used in a polarization diversity configuration to implement a polarization insensitive photonic circuit baed an photonic crystal waveguides.

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