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IMPROVED OPTICAL SPLITTER WITH TAPERD MULTIMODE INTERFERENCE WAVEGUIDE
IMPROVED OPTICAL SPLITTER WITH TAPERD MULTIMODE INTERFERENCE WAVEGUIDE
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机译:带有锥形多模干涉波形的改进型光学分束器
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摘要
A 1 x 2 splitter design having low loss is described. The splitter has a non-adiabatic tapered waveguide (22) connected between a substantially single-mode input waveguide (20) and two output waveguides (24, 26). The non-adiabatic tapered waveguide widens in width towards the output waveguides, and merges substantially continuously with the input waveguide in a direction parallel to the optical axis of the input waveguide. This keeps radiation mode generation to a minimum which, in turn, keeps insertion loss low. In the described embodiment, the non-adiabatic taper shape is based on a perturbed cosine function. The 1 x 2 splitter can be cascaded with other such splitters in order to build a 1 x 2N splitter design.
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机译:描述了具有低损耗的1×2分离器设计。分离器具有连接在基本上单模输入波导(20)和两个输出波导(24、26)之间的非绝热锥形波导(22)。非绝热锥形波导的宽度朝向输出波导变宽,并且在与输入波导的光轴平行的方向上与输入波导基本连续地合并。这将辐射模式的产生保持在最低水平,从而使插入损耗保持较低。在所描述的实施例中,非绝热锥形形状基于扰动的余弦函数。 1 x 2分离器可以与其他此类分离器级联,以构建1 x 2N分离器设计。
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