1 July 2011 Thermal stability analysis of nonlinear optical switch based on asymmetric three-core nonlinear directional coupler with variable Gaussian coupling coefficient
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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, Qing Tao, Fengguang Luo, Fengguang Luo, Lei Cao, Lei Cao, Jian Hu, Jian Hu, Dusi Cai, Dusi Cai, Zhengwen Wan, Zhengwen Wan, Jinxing Zhang, Jinxing Zhang, Zhihua Yu, 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 . Submission:
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