Short and robust directional couplers designed by shortcuts to adiabaticity | Zendy

ShuoYen Tseng | Zendy; Rui-Dan Wen | Zendy; Ying-Feng Chiu | Zendy; Xi Chen | Zendy

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Short and robust directional couplers designed by shortcuts to adiabaticity

Author(s) -

ShuoYen Tseng,

Rui-Dan Wen,

Ying-Feng Chiu,

Xi Chen

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.018849

Subject(s) - power dividers and directional couplers , optics , hybrid coupler , coupled mode theory , physics , invariant (physics) , inverse , beam propagation method , wavelength , coupling (piping) , refractive index , computer science , mathematics , materials science , quantum mechanics , geometry , metallurgy

We propose short and robust directional couplers designed by shortcuts to adiabaticity, based on Lewis-Riesenfeld invariant theory. The design of directional couplers is discussed by combining invariant-based inverse engineering and perturbation theory. The error sensitivity of the coupler is minimized by optimizing the evolution of dynamical invariant with respect to coupling coefficient/input wavelength variations. The proposed robust coupler devices are verified with beam propagation simulations.

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