简群
简群-
多模光纤中简并模式群的分别探测
Separate Detection of Degenerated Mode Group of Multimode Fiber
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用芯径为62.5μm的标准通信多模光纤进行了简并模式群分别探测实验，用单模光纤激励多模光纤，测量简并模式群功率随激励光纤的横向对准偏差的变化关系。
The experiment of DMG separate detection was conducted with a standard communication multimode fiber with a core diameter of 62.5 μ m. The multimode fiber was excited by a single mode fiber , and optical power of DMGs was measured while changing the lateral misalignment of exciting fiber .