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Inverse design and implementation of a wavelength demultiplexing grating coupler.

ABSTRACT: Nanophotonics has emerged as a powerful tool for manipulating light on chips. Almost all of today's devices, however, have been designed using slow and ineffective brute-force search methods, leading in many cases to limited device performance. In this article, we provide a complete demonstration of our recently proposed inverse design technique, wherein the user specifies design constraints in the form of target fields rather than a dielectric constant profile, and in particular we use this method to demonstrate a new demultiplexing grating. The novel grating, which has not been developed using conventional techniques, accepts a vertical-incident Gaussian beam from a free-space and separates O-band (1300 nm) and C-band (1550 nm) light into separate waveguides. This inverse design concept is simple and extendable to a broad class of highly compact devices including frequency filters, mode converters, and spatial mode multiplexers.

SUBMITTER: Piggott AY

PROVIDER: S-EPMC4245525 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature

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Inverse design and implementation of a wavelength demultiplexing grating coupler.

Piggott Alexander Y AY Lu Jesse J Babinec Thomas M TM Lagoudakis Konstantinos G KG Petykiewicz Jan J Vučković Jelena J

Scientific reports 20141127

Nanophotonics has emerged as a powerful tool for manipulating light on chips. Almost all of today's devices, however, have been designed using slow and ineffective brute-force search methods, leading in many cases to limited device performance. In this article, we provide a complete demonstration of our recently proposed inverse design technique, wherein the user specifies design constraints in the form of target fields rather than a dielectric constant profile, and in particular we use this met ...[more]

PMID: 25428549

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