Large temperature sensitivity of fiber-optic extrinsic Fabry-Perot interferometer based on polymer-filled glass capillary

被引：69
作者：
Zhang, Guilin [1 ]
Yang, Minghong [1 ]
Wang, Min [1 ]
机构：
[1] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2013年 / 19卷 / 06期
基金：
美国国家科学基金会;
关键词：
Fabry-Perot; Fiber optics sensors; Polymers; Temperature; PHOTONIC CRYSTAL FIBER; FEMTOSECOND LASER; OPTICAL-FIBER; STRAIN SENSOR; TIP;
D O I：
10.1016/j.yofte.2013.09.010
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel and low cost fiber-optic extrinsic Fabry-Perot interferometer (EFPI) is proposed. The EFPI is fabricated at the fiber tip by inserting a single mode fiber (SMF) into a partially polymer-filled glass capillary to form an air micro-cavity, which can be precisely controlled with a three-dimensional translation stage. The optimal EFPI has a loss less than 10 dB and a fringe visibility more than 30 dB. Application of the EFPI for temperature measurement is experimentally demonstrated. Due to the high thermal expansion coefficient (TEC) of the polymer, the sensor exhibits a good linear response and large temperature sensitivity of similar to 5.2 nm/degrees C, which is almost three orders larger than that of the current F-P temperature sensors. Therefore, it may be applied to the surrounding temperature sensing. (C) 2013 Elsevier Inc. All rights reserved.
引用
收藏
页码：618 / 622
页数：5
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