Experimental demonstration of \(\hbox {LP}_{11}\) mode filtering based on two-mode fiber Bragg grating

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• 作者：Guijun Hu ; Yueyu Han ; Jian Xiao ; Li Li ; Haiyan Wang
• 关键词：Optical fiber communication ; Mode division multiplexing ; Few ; mode fiber Bragg grating ; Core ; offset splicing
• 刊名：Optical and Quantum Electronics
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：47
• 期：7
• 页码：1973-1982
• 全文大小：989 KB
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• 作者单位：Guijun Hu (1)
  Yueyu Han (1)
  Jian Xiao (1)
  Li Li (1)
  Haiyan Wang (1)
  
  1. Department of Optics Communication, College of Communication Engineering, Jilin University, Changchun, 130012, People鈥檚 Republic of China
  
• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X

文摘

A \(\hbox {LP}_{11}\) mode filtering method based on two-mode fiber Bragg grating is proposed in this paper and its feasibility is verified experimentally. The experimental results illustrate that \(\hbox {LP}_{11}\) mode can be obtained in the transmission light of the two-mode FBG when the laser operates at 1,064.7聽nm; moreover, by using a three ports circulator, the \(\hbox {LP}_{11}\) mode can also be obtained in the reflection light of the two-mode FBG at 1,062.8聽nm. Furthermore, by adjusting core-offset splicing distance between the laser鈥檚 pigtail and the two-mode fiber, the insertion loss of the \(\hbox {LP}_{11}\) mode is optimized. And in the case of splicing at the optimal core-offset distance, at 1,064.7聽nm, the insertion loss of the \(\hbox {LP}_{11}\) mode obtained at the transmission end is 5.98聽dB, and at 1,062.8聽nm, the insertion loss of the \(\hbox {LP}_{11}\) mode obtained at the reflection end is 9.30聽dB. Due to all-fiber structure, this method of filtering \(\hbox {LP}_{11}\) mode by utilizing the two-mode FBG is easy to implement, and the two-mode FBG is easy to couple with the fiber link.