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High efficiency grating couplers for silicon-on-insulator photonic circuits

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3 Author(s)
Wang, Zhechao ; Sch. of ICT, R. Inst. of Technol. (KTH), Kista, Sweden ; Yongbo Tang ; Wosinski, Lech

We have experimentally demonstrated two methods for improving the coupling efficiency of grating couplers. A grating coupler-polarization splitter is measured to have over 50% efficiency for both polarizations. 68% efficiency for single polarization is achieved by a nonuniform grating coupler.

Published in:

Optical Communication (ECOC), 2010 36th European Conference and Exhibition on

Date of Conference:

19-23 Sept. 2010