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本文主要介绍新设计的光纤之间低耦合损耗的平凸棒透镜,用平凸棒透镜作耦合元件的波分复用器与国内用国产自聚焦棒(GRIN)透镜作耦合元件的干涉滤光器型波分复用器相比,插入损耗要低1～2dB。
This article mainly introduces the newly designed optical fiber between the low coupling loss of the rod lens, using the rod lens as the coupling element of the wavelength division multiplexer and domestically produced from the rod (GRIN) lens as the coupling element of the interference filter WDM WDM, the insertion loss is lower 1 ~ 2dB.