偏振脱敏高隔离度高分子波导分波器设计  

Design of High-Isolation Polyimide Waveguide Wavelength De-multiplexer with Polarization-insensitivity

作　　者：方志刚[1] 陈抱雪[1] 周建忠[1] 高仁喜[1] 袁一方[1] 陈林[1] 矶守[2] 

机构地区：[1]上海理工大学光电学院,上海200093 [2]东京农工大学工学部应用化学系

出　　处：《光子学报》2007年第2期216-220,共5页Acta Photonica Sinica

基　　金：上海市重点学科建设(T0501);上海市教委第四期重点学科建设基金资助

摘　　要：提出了一种新的高分子波导分波器结构,用以改善波长串扰以及偏振变动、波长带宽等引起的劣化影响.主要技术特征是采用两支参量不同的波导来构成非对称定向耦合器.报告了用非对称定向耦合器构成的马赫-泽德尔干涉型波导分波器的结构特点、基本工作原理和光学特性,详细讨论了器件的设计原理和器件性能优化的处理方法.采用三维波束传播法做了仿真验证,结果表明,该器件在1 550±5 nm和1 310±5 nm的波长带域上、对两个正交偏振态均实现了串扰小于-40 dB的高隔离度分波特性.To restrain crosstalk caused by different wavelength and deteriorate affect through polarization variation and non-monochromaticity of the source, a new wavelength de-multiplexer structure was proposed. The leading technical characteristic is the asymmetric directional coupler composed of two waveguides with different parameters. The structure features, fundamental and optical characteristic of Mach Zehnder interferometer,which are composed of asymmetric directional couplers, were reported. The design fundamental and optimizing method were discussed in detail. The design result was verified by 3D BPM simulation,showed that the crosstalk value of each output port is less than -40 dB when the input beam is 1 550±5 nm and 1 310±5 nm wavelength and two orthogonal polarizations.

关 键 词：导波光学 分波器 非对称定向耦合 马赫-泽德尔干涉回路 

分 类 号：TN252[电子电信—物理电子学]