Title :
Temperature Sensor Based on Modal Interference in Hollow-Core Photonic Bandgap Fiber With Collapse Splicing
Author :
Gong, Huaping ; Chan, Chi Chiu ; Zhang, Yifan ; Wong, Weichang ; Dong, Xinyong
Author_Institution :
Inst. of Optoelectron. Technol., China Jiliang Univ., Hangzhou, China
fDate :
5/1/2012 12:00:00 AM
Abstract :
A temperature sensor based on modal interference in a hollow-core photonic bandgap fiber (HC-PBGF) is presented. The modal interferometer is fabricated by splicing the two ends of a 12-mm HC-PBGF to the standard single-mode fibers. The airholes in the core and cladding of the HC-PBGF are completely collapsed during the fusion splicing, and the length of the collapsed area of about 300 μm is observed. The transmission spectra under different temperatures are measured. The sensitivity of 31.8 pm/°C is achieved in the range of 25 °C-60 °C. The influence of the length of HC-PBGF on the sensitivity is also investigated.
Keywords :
fibre optic sensors; light interference; light interferometers; optical fibre cladding; optical fibre fabrication; photonic band gap; splicing; temperature measurement; temperature sensors; HC-PBGF; airholes; collapse splicing; collapsed area; fusion splicing; hollow-core photonic bandgap fiber; modal interference; modal interferometer; size 12 mm; standard single-mode fibers; temperature 25 degC to 60 degC; temperature measurement; temperature sensor; transmission spectra; Optical fiber amplifiers; Optical fiber sensors; Sagnac interferometers; Sensitivity; Splicing; Temperature measurement; Temperature sensors; Modal interference; optical fiber sensor; photonic bandgap fiber (PBGF); temperature sensor;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2011.2171481
