Inscription of Bragg gratings in few-mode optical fibers

被引：6
|
作者：
Guo, Peng [1 ]
Rao, Yunjiang [1 ]
Li, Dengyong [1 ]
Gong, Yuan [1 ]
Peng, Gangding [2 ]
Wu, Yu [1 ]
Zhang, Weili [1 ]
Wu, Huijuan [1 ]
机构：
[1] Univ Elect Sci & Technol China, Key Lab Opt Fiber Sensing & Commun, Educ Minist China, Chengdu 611731, Peoples R China
[2] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
来源：
CHINESE OPTICS LETTERS | 2013年 / 11卷 / 02期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
MULTIMODE; TEMPERATURE;
D O I：
10.3788/COL201311.020606
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Few-mode fiber Bragg grating (FM-FBG) has wide applications in the field of multi-wavelength fiber lasers and fiber-optic sensing. In this letter, FBG is successfully written in a novel type of FM fiber (FMF) based on 248-nm excimer laser and a uniform phase mask. A low-loss coupling between the FMF to a single-mode fiber is realized by a graded-index multi-mode fiber with a length of about a quarter pitch. The sensing properties of the FMF grating are further investigated. The experimental results indicate that the novel FM-FBG has sensitivities of temperature, strain, and bending of 11.2 pm/degrees C, 1.3 pm/mu epsilon, and 636.9 pm/m(-1), respectively.
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页数：3
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