Type

Journal Article

Authors

Gerald Farrell
Yuliya Semenova
Gang-Ding Peng
Bo Liu
Xingdao He
Shengpeng Wan
Chongxiu Yu
Rahul Kumar
Wei Han
Fangfang Wei
and 6 others

Subjects

Physics

Topics
optical fiber sensors computer sciences temperature sensors high temperature optical spectroscopy single mode fibers optical interferometry optical fiber applications

Hollow Core Fiber Based Interferometer for High Temperature (1000 °C) Measurement (2018)

Abstract A simple, cost effective high temperature sensor (up to 1000 °C) based on a hollow core fiber (HCF) structure is reported. It is configured by fusion splicing a short section of HCF with a length of few millimeters between two standard single mode fibers (SMF-28). Due to multiple beam interference introduced by the cladding of the HCF, periodic transmission dips with high spectral extinction ratio and high quality (Q) factor are excited. However, theoretical analysis shows that minor variations of the HCF cladding diameter may result in a significant decrease in the Q factor. Experimental results demonstrate that the position of periodic transmission dips are independent of the HCF length, but spectral Q factors and transmission power varies with different HCF lengths. A maximum Q factor of 3.3×104 has been demonstrated with large free spectral range of 23 nm and extinction ratio of 26 dB. Furthermore, the structure is proved to be an excellent high temperature sensor with advantages of high sensitivity (up to 33.4 pm/°C), wide working temperature range (from room temperature to 1000°C), high resolution, good stability, repeatability, relatively low strain sensitivity (0.46 pm/με), low cost and a simple and flexible fabrication process that offers a great potential for practical applications. A thorough theoretic analysis of the HCF based fiber structure has been proposed. The experimental results are demonstrated to be well matched with our simulation results.
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Full list of authors on original publication

Gerald Farrell, Yuliya Semenova, Gang-Ding Peng, Bo Liu, Xingdao He, Shengpeng Wan, Chongxiu Yu, Rahul Kumar, Wei Han, Fangfang Wei and 6 others

Experts in our system

1
Gerald Farrell
TU Dublin
Total Publications: 212
 
2
Yuliya Semenova
TU Dublin
Total Publications: 136
 
3
Gang-Ding Peng
TU Dublin
Total Publications: 5
 
4
Bo Liu
TU Dublin
Total Publications: 8
 
5
Chongxiu Yu
TU Dublin
Total Publications: 26
 
6
Rahul Kumar
TU Dublin
Total Publications: 8
 
7
Wei Han
TU Dublin
Total Publications: 9
 
8
Fangfang Wei
TU Dublin
Total Publications: 8