Characteristic analysis of two-mode fiber Bragg grating
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- 作者：Li Yan (1)
Guijun Hu (1)
Jian Xiao (1)
Yuxin Chang (1)
Song Bai (1)
Haiyan Wang (1) - 刊名：Applied Physics B: Lasers and Optics
- 出版年：2014
- 出版时间：December 2014
- 年：2014
- 卷：117
- 期：4
- 页码：1221-1228
- 全文大小：1,930 KB
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Guijun Hu (1)
Jian Xiao (1)
Yuxin Chang (1)
Song Bai (1)
Haiyan Wang (1)
1. Department of Optics Communication, College of Communication Engineering, Jilin University, Changchun, 130012, People’s Republic of China - ISSN：1432-0649
文摘
In this paper, the two-mode FBG is intensively studied in simulation and experiment. From the perspective of mode coupling, the coupling wavelength of the two-mode FBG is analyzed theoretically and the Bragg wavelength is calculated in simulation. Meanwhile, the variation of the two-mode FBG’s reflection spectrum is simulated in different power ratios of the LP11 and LP01 modes. Then, a two-mode FBG is written on SMF-28e fiber by using the phase-mask technique and the two-mode FBG’s reflection spectrum has been experimentally measured by adjusting the core-offset distance between the broadband light source’s pigtail and the two-mode fiber which changes the power ratio of LP11 and LP01 modes. Eventually and most importantly, the mode characteristic of the two-mode FBG is studied, and the LP11 mode is successfully obtained by using an experimental system of a two-mode FBG combined with an optical circulator. The results show that the two-mode FBG has a good prospect for obtaining high-order mode and for application in mode division multiplexing/demultiplexing.