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Conferences > OFC > 2021 > W1C > W1C.4

2D Grating Coupler Induced Polarization Crosstalk in Coherent Transceivers for Next Generation Data Center Interconnects

Galina Georgieva, Pascal M. Seiler, Christian Mai, Klaus Petermann, and Lars Zimmermann

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Abstract

We investigate fundamental properties of polarization-splitting/combining 2D grating couplers for silicon photonic coherent transceivers. Linear cross-polarization related polarization crosstalk causes signal non-orthogonality. The relevance of these effects is illustrated in a 16-QAM experiment.

© 2021 The Author(s)

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