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Compact dual-mode waveguide crossing based on subwavelength gratings assisted multimode-interference couplers

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Abstract

We design a compact multimode waveguide crossing introducing fully-etched subwavelength gratings into multimode-interference coupler. The insertion losses are 0.47 dB for TE0 and 1.60 dB for TE1 mode at 1550 nm.

© 2021 The Author(s)

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