多路复用器
光学
解复用器
插入损耗
物理
材料科学
光束传播法
多路复用
计算机科学
折射率
电信
作者
Juncheng Fang,Jing Bu,Jinpei Li,Chuxuan Lin,Aru Kong,Xiangkun Yin,Haipeng Luo,Xiaolu Song,Zhenwei Xie,Ting Lei,Xiaocong Yuan
出处
期刊:Optics Express
[The Optical Society]
日期:2021-10-29
卷期号:29 (23): 37852-37852
被引量:10
摘要
The linear polarized (LP) mode multiplexer based on the inverse designed multi-plane light conversion (MPLC) has the advantages of low insertion loss and low mode crosstalk. However, the multiplexer also requires the fabrication and alignment accuracy in experiments, which have not been systematically analyzed. Here, we perform the error tolerance analysis of the MPLC and summarize the design rules for the LP mode multiplexer/demultiplexer. The error tolerances in the fabrication process and experimental demonstration are greatly released with proper parameters of the input/output optical beam waist, the pitch of optical beam array, and the propagation distances between the phase plane. To proof this design rule, we experimentally demonstrate the LP mode multiplexer generating LP01, LP11a, LP11b, LP21 modes and coupling to the few mode fiber, with the insertion loss lower than -5 dB. The LP modes are demultiplexed by MPLC, with the crosstalk of different mode groups lower than -10 dB. LP modes carrying 10 Gbit/s on-off keying signals transmit in a 5 km few mode fiber. The measured bit error rates (BER) curves of the LP01, LP11a, LP21 modes have the power penalties lower than 12 dB.
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