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arXiv · 1711.02228

Fully-automated optimization of grating couplers

Logan Su·Rahul Trivedi·Neil V. Sapra·Alexander Y. Piggott·Dries Vercruysse·Jelena Vučković
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Abstract

We present a gradient-based algorithm to design general 1D grating couplers without any human input from start to finish, including a choice of initial condition. We show that we can reliably design efficient couplers to have multiple functionalities in different geometries, including conventional couplers for single-polarization and single-wavelength operation, polarization-insensitive couplers, and wavelength-demultiplexing couplers. In particular, we design a fiber-to-chip blazed grating with under 0.2 dB insertion loss that requires a single etch to fabricate and no back-reflector.

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Logan Su, Rahul Trivedi, Neil V. Sapra, Alexander Y. Piggott, Dries Vercruysse, Jelena Vučković. 2017-11-07. Fully-automated optimization of grating couplers. https://doi.org/10.1364/oe.26.004023

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