Temperature sensitivity of LPFG inscribed in few modes fiber

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Affiliation of Author(s):Tianjin University

Teaching and Research Group:光纤传感

Journal:Proc. SPIE

Place of Publication:美国

Key Words:few mode fiber, long period fiber gratings

Abstract:A LPFG with a period of 145μm has been successfully inscribed in the few modes fiber (FMF) by CO2
laser-irradition method. The mode coupling theory indicates that the first two resonant wavelengths of the LPFG
attribute to the mode coupling between the core mode LP01 and the cladding modes LP0,21 and LP0,22. The third one is the
result of the coupling between the higher-order core mode LP02 and cladding mode LP0,29 or LP0,30. These resonant
wavelengths shift in different direction with the increasing temperature, and the experimental results show their
temperature sensitivity are 66.54pm/℃,90.

All the Authors:Jie Dong, Mei Sang*, Qiuli Wang, Chenhao Zhong，Tiegen Liu,

First Author:Jie Dong

Indexed by:Applied Research

Correspondence Author:Mei Sang

Document Code:104640E

Volume:AOPC2017

Issue:10464

Page Number:104640E-1~6

Translation or Not:no

CN No.:null