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Ultra-Broadband Compact Polarization Beam Splitter Based on Asymmetric Etched Directional Coupler

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Abstract

We propose an ultra-broadband polarization beam splitter with 4.6 pm coupling length. Extinction ratio over 10 dB and insertion loss less than 1 dB are achieved over bandwidth of 420 nm centred at 1460 nm.

© 2020 The Author(s)

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