Thermal stability analysis of nonlinear optical switch based on asymmetric three-core nonlinear directional coupler with variable Gaussian coupling coefficient

Qing Tao; Fengguang Luo; Lei Cao; Jian Hu; Dusi Cai; Zhengwen Wan; Jinxing Zhang; Zhihua Yu

doi:10.1117/1.3558853

1 July 2011 Thermal stability analysis of nonlinear optical switch based on asymmetric three-core nonlinear directional coupler with variable Gaussian coupling coefficient

Qing Tao, Fengguang Luo, Lei Cao, Jian Hu, Dusi Cai, Zhengwen Wan, Jinxing Zhang, Zhihua Yu

Author Affiliations +

Optical Engineering, Vol. 50, Issue 7, 071104 (July 2011). https://doi.org/10.1117/1.3558853

Abstract

We analyze the thermal stability of the power transmission efficiency and the extinction ratio in an asymmetric three-core silicon-on-insulator nonlinear directional coupler with variable Gaussian coupling coefficient. Because the refractive indices of Si and SiO₂ materials are subject to temperature change, the effective refractive index of the nonlinear coupler varies correspondingly. When ratio (LC/b) and ΔT change, the relative transmission efficiency error (Δ) values and relative change of extinction ratio (η) values are obtained. It can be easily shown that variation of Δ and η are negligible under LC/b ≤ 1/2. Therefore, we can set LC/b ≤ 1/2 and ΔT ∈ [-100 K, 100 K] in order to make the power transmission efficiency and the extinction ratio work steadily. This is significant in guiding an actual nonlinear optical pulse switch fabrication.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Qing Tao, Fengguang Luo, Lei Cao, Jian Hu, Dusi Cai, Zhengwen Wan, Jinxing Zhang, and Zhihua Yu "Thermal stability analysis of nonlinear optical switch based on asymmetric three-core nonlinear directional coupler with variable Gaussian coupling coefficient," Optical Engineering 50(7), 071104 (1 July 2011). https://doi.org/10.1117/1.3558853

Published: 1 July 2011

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