Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Design and experimental study of mode selective all-fiber fused mode coupler based on few mode fiber

Xiao Ya-Ling Liu Yan-Ge Wang Zhi Liu Xiao-Qi Luo Ming-Ming

Design and experimental study of mode selective all-fiber fused mode coupler based on few mode fiber

Xiao Ya-Ling, Liu Yan-Ge, Wang Zhi, Liu Xiao-Qi, Luo Ming-Ming
PDF
Get Citation
Metrics
  • Abstract views:  476
  • PDF Downloads:  249
  • Cited By: 0
Publishing process
  • Received Date:  21 April 2015
  • Accepted Date:  26 May 2015
  • Published Online:  20 October 2015

Design and experimental study of mode selective all-fiber fused mode coupler based on few mode fiber

  • 1. Institute of Modern Optics, Nankai University, Tianjin 300071, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 61322510, 11174154) and the Key Program of the Natural Science Foundation of Tianjin, China (Grant No. 12JCZDJC20600).

Abstract: Three types of all-fiber mode-selection couplers based on fused few-mode fibers (FMFs) are proposed and demonstrated. The specific mode conversions are achieved with appropriate parameters, keeping to the coupling mode theory. LP01 mode is selectively converted into the LP11, LP21, LP02 mode via a 2×2 fused fiber coupler composed of single-mode fiber (SMF) and FMF. By changing the preset parameters in fabrication, mode conversions are also realized between the LP01 and the mixed high order modes. Moreover, conversions from the LP01 mode to other higher order modes are implemented as well in a 3×3 fiber coupler comprising FMF-SMF-FMF structures. Besides, different modes are simultaneously obtained in separated channels to reduce model crosstalk. Distinguished from other techniques, symmetric and asymmetric fused biconical taper are employed in this paper. The 2×2 fiber coupler achieves the conversion from LP01 mode to a single higher order mode such as LP11 or LP21 mode over a broadband spectral range from 1530 nm to 1560 nm. Meanwhile, the mode conversion efficiency exceeding 80% is recorded in experiment, while the insertion loss remains as low as 0.8 dB. Through the comparison with all-fiber mode-selection couplers reported, the relationship between fusion-degree and conversion efficiency is further studied. The experimental results are consistent with the numerical simulations. In addition, the coupler based mode-selection with lower insertion loss and higher conversion efficiency shows potential applications in mode-division multiplexing and sensing systems.

Reference (17)

Catalog

    /

    返回文章
    返回