摘要
利用多模干涉自成象原理分析设计了具有较小循环周期比的１．３μｍ与１．５５μｍ波长的Ｓｉ０．９６Ｇｅ０．０４／Ｓｉ波分复用器．通过模的传播分析法对其传输特性进行分析发现，在８μｍ的耦合区宽度和１１５０μｍ的最佳耦合长度，这种器件对１．３μｍ和１．５５μｍ波长光的对比度均在４０ｄＢ以上，且插入损耗小于４．０×１０－３ｄＢ．
Abstract A systematical analysis and design have
been made for 1 3μm and 1 55μm Si 0.96 Ge 0.04 /Si wavelength division multiplexer
based on the self imaging principle of multi mode interference. Using the modal propagation
analysis, transmission characteristics of the device are investigated. The results show that, at the
coupler width of 8μm and the optimum coupler length of 1150μm, the contrast of this device is
as higher as 40dB, and the insertion loss is less than 4 0×10 -3 dB.
基金
国家自然科学基金
关键词
波分复用器
光通信
WDM
多模干涉
Guided electromagnetic wave propagation
Multiplexing
Semiconducting germanium compounds
