Adjoint optimization of polarization-splitting grating couplers
Optics
2023-02-08 v2
Abstract
We have designed a polarization-splitting grating coupler (PSGC) in silicon-oninsulator (SOI) that has 1.2 dB peak loss in numerical simulations, which is the best simulated performance of PSGCs without a bottom reflector to the best of our knowledge. Adjoint method-based shape optimization enables us to explore complex geometries that are intractable with conventional design approaches. Physics-based process-independent knowledge of PSGCs is extracted from the adjoint optimization and can be transferred to other platforms with a minimum of effort.
Cite
@article{arxiv.2210.05655,
title = {Adjoint optimization of polarization-splitting grating couplers},
author = {Peng Sun and Thomas Van Vaerenbergh and Sean Hooten and Raymond Beausoleil},
journal= {arXiv preprint arXiv:2210.05655},
year = {2023}
}
Comments
15 pages, 17 figures