Thermo-optic waveguide digital optical switch using symmetrically coupled gratings | Zendy

DeGui Sun | Zendy; Zhiying Liu | Zendy; Ying Zha | Zendy; Wenyuan Deng | Zendy; Ying Zhang | Zendy; Xiaoqi Li | Zendy

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Thermo-optic waveguide digital optical switch using symmetrically coupled gratings

Author(s) -

DeGui Sun,

Zhiying Liu,

Ying Zha,

Wenyuan Deng,

Ying Zhang,

Xiaoqi Li

Publication year - 2005

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.13.005463

Subject(s) - optics , extinction ratio , insertion loss , fiber bragg grating , materials science , coupled mode theory , optical switch , waveguide , grating , crosstalk , coupling loss , coupling (piping) , optoelectronics , refractive index , physics , optical fiber , wavelength , metallurgy

A 2x2 digital optical switch using two symmetrical unidirectional Bragg grating couplers is proposed and studied in this paper. A low-loss polymer is used as waveguide material, and the Bragg grating coupling efficiency is optimized to be 22%, then the unidirectional coupling efficiency of 99.9% is achieved in theory. The performance of the switch based on the unidirectional couplers with Bragg gratings is theoretically modeled and simulated. Finally, the 2.4dB insertion loss, the -17dB crosstalk between two output ports, the 28 dB extinction ratio, the 1.5ms response speed and the 87mW power consumption are experimentally demonstrated with this regime.

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