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High-Extinction-Ratio and Fabrication-Tolerant Polarization Beam Splitter based on Grating-Assisted Contradirectional Couplers

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Abstract

A fabrication-tolerant polarization beam splitter (PBS) based on grating-assisted contradirectional couplers is experimentally demonstrated. Over 30-dB extinction ratios are achieved for both polarizations. Large fabrication tolerance in coupling length is also verified.

© 2016 Optical Society of America

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