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 +
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)
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
Lens.org Logo
CITATIONS
Cited by 4 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Refractive index

Switches

Silicon

Directional couplers

Nonlinear optics

Temperature metrology

Analytical research

Back to Top