Hollow-Core-Fiber-Based Interferometer for High-Temperature Measurements

Zhe Zhang; Changrui Liao; Jian Tang; Ying Wang; Zhiyong Bai; Zhengyong Li; Kuikui Guo; Mi Deng; Shaoqing Cao; Yiping Wang

doi:10.1109/JPHOT.2017.2671437

IEEE Photonics Journal (Jan 2017)

Hollow-Core-Fiber-Based Interferometer for High-Temperature Measurements

Zhe Zhang,
Changrui Liao,
Jian Tang,
Ying Wang,
Zhiyong Bai,
Zhengyong Li,
Kuikui Guo,
Mi Deng,
Shaoqing Cao,
Yiping Wang

Affiliations

Zhe Zhang: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Changrui Liao: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Jian Tang: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Ying Wang: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Zhiyong Bai: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Zhengyong Li: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Kuikui Guo: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Mi Deng: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Shaoqing Cao: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
Yiping Wang: Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China

DOI: https://doi.org/10.1109/JPHOT.2017.2671437
Journal volume & issue: Vol. 9, no. 2
pp. 1 – 9

Abstract

Read online

We report a new fiber optic sensor for temperature measurement at a temperature range of up to 900 °C with excellent stability and repeatability. The sensing head is comprised of a short hollow-core fiber segment spliced between two single-mode fibers using a commercial splicer. Optical power from the lead-in fiber is partly coupled to silica cladding of the hollow-core fiber with the remainder propagating in air core by short distance. The two beams are then re-coupled to the core of the lead-out fiber, owing to the offset splicing joint. Due to the effective index difference between the two beams, an interference pattern in the transmission spectrum is obtained. The distinct thermo-optic coefficients between silica and air result in a high-temperature sensitivity of 41 pm/ °C, and the enclosed structure ensures its immunity to the external refractive index.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

About the journal

Abstract

Keywords