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Proceedings Paper

Inverse-designed all-dielectric waveguide bend
Author(s): F. Callewaert; K. Aydin
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Paper Abstract

Silicon photonics is a fast growing technology for high bandwidth optical communications. Bandwidth can be strongly enhanced with the use of multimode systems, but integrated photonics still has to operate in the single-mode regime. Indeed, most multi-mode photonic devices such as waveguide bends cannot preserve the integrity of the modes. Here we present an alternative inverse-design method to design an ultra-compact multimode waveguide bend. The convergence and performance of the algorithm are studied, along with a transform method that allows to design devices made of two materials only. The optimal device is studied with full electromagnetic simulations to compare its behavior with a more traditional circular waveguide bend. A broadband transmission with very low intermodal coupling is achieved. This illustrates the potential of the objective-first inverse-design method to design ultra-compact broadband photonic devices.

Paper Details

Date Published: 30 September 2016
PDF: 8 pages
Proc. SPIE 9948, Novel Optical Systems Design and Optimization XIX, 99480Q (30 September 2016); doi: 10.1117/12.2236685
Show Author Affiliations
F. Callewaert, Northwestern Univ. (United States)
K. Aydin, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 9948:
Novel Optical Systems Design and Optimization XIX
Arthur J. Davis; Cornelius F. Hahlweg; Joseph R. Mulley, Editor(s)

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