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Proceedings Paper

Photonic cavity design by topology optimization
Author(s): Rasmus E. Christiansen; Fengwen Wang; Jesper Mørk; Ole Sigmund
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Paper Abstract

This study considers a recently proposed topology optimization based approach for designing photonic membrane cavities supporting a dipole cavity mode. Foremost, the study demonstrates that the approach is robust towards the choice of initial guess provided for the optimization problem, in the sense that near identical final designs are obtained for vastly different initial guesses. This finding suggests that the final designs are near-optimal under the given design constraints. Secondarily, by stopping the design procedure after the same fixed number of design iterations for all initial guesses, it shows that the designed photonic cavity is sensitive towards certain small perturbations of their geometry, stressing the need for utilizing robust optimization techniques and imposing fabrication conforming length-scales in the cavity geometries.

Paper Details

Date Published: 3 September 2019
PDF: 7 pages
Proc. SPIE 11089, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI, 110890A (3 September 2019); doi: 10.1117/12.2529099
Show Author Affiliations
Rasmus E. Christiansen, Technical Univ. of Denmark (Denmark)
Fengwen Wang, Technical Univ. of Denmark (Denmark)
Jesper Mørk, Technical Univ. of Denmark (Denmark)
Ole Sigmund, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 11089:
Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVI
Balaji Panchapakesan; André-Jean Attias, Editor(s)

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