光学学报, 2005, 25 (1): 11, 网络出版: 2006-05-22
变耦合系数非线性三波导定向耦合器特性研究
Switching Characteristics of Three-Core Nonlinear Directional Couplers with Variable Coupling Coefficient
导波与光纤光学 三波导耦合器 变耦合系数 全光开关 guided wave and fiber optics three-core coupler variable coupling coefficient (VCC) all-optical switching
摘要
报道了对高斯型及指数型变耦合系数三波导耦合器的一些重要的全光开关特性进行的研究。利用四阶龙格库塔方法对指数型和高斯型两类变耦合系数三波导耦合器进行了数值计算。数值计算结果表明
Abstract
The all-optical switching characteristics of three-core nonlinear directional waveguide couplers (NLDCs) with Gaussian type and exponential type variable coupling coefficient (VCC) are presented. Their transmission features are investigated numerically. It is shown that， for the three-core VCC NLDCs, the power can switch completely between guide 1 and guide 3; however 100% power output cannot be achieved for guide 2. The switching curves of three-core NLDCs with VCC are sharper than those of their two-core counterparts with same maximum coupling coefficient. It is also shown that the sidelobes in the post-switching region, which exist in the parallel nonlinear directional couplers, can be suppressed with three-core NLDC with VCC.
吴晋龙, 李劬, 金国良, 刘宪周, 刘刚军. 变耦合系数非线性三波导定向耦合器特性研究[J]. 光学学报, 2005, 25(1): 11. 吴晋龙, 李劬, 金国良, 刘宪周, 刘刚军. Switching Characteristics of Three-Core Nonlinear Directional Couplers with Variable Coupling Coefficient[J]. Acta Optica Sinica, 2005, 25(1): 11.
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