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Dual-layer polarization beam splitting grating coupler with low polarization dependent loss

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Abstract

We propose a dual-layer polarization splitting grating coupler (PSGC) in multilayer silicon nitride-on-silicon photonic circuits. The coupling efficiency reaches −3.2 dB with polarization dependent loss (PDL) of 0.08 dB at 1550 nm.

© 2021 The Author(s)

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