Adjoint-based optimization of active nanophotonic devices | Zendy

Jiahui Wang | Zendy; Yu Shi | Zendy; Tyler W. Hughes | Zendy; Zhexin Zhao | Zendy; Shanhui Fan | Zendy

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Adjoint-based optimization of active nanophotonic devices

Author(s) -

Jiahui Wang,

Yu Shi,

Tyler W. Hughes,

Zhexin Zhao,

Shanhui Fan

Publication year - 2018

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.003236

Subject(s) - nanophotonics , optics , finite difference time domain method , reduction (mathematics) , isolator , optical isolator , sensitivity (control systems) , insertion loss , shape optimization , computer science , materials science , physics , electronic engineering , finite element method , mathematics , geometry , optical fiber , engineering , thermodynamics

We show that the adjoint variable method can be combined with the multi-frequency finite-difference frequency-domain method for efficient sensitivity calculations, enabling the systematic optimization of active nanophotonic devices. As a proof of principle demonstration, we have optimized a dynamic isolator structure in two-dimensions, resulting in the reduction of the length of the modulated regions by a factor of two, while retaining good performance in the isolation ratio and insertion loss.

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