关键词: 光热光谱法/
空芯光子带隙光纤/
气体传感器/
干涉仪/
光纤传感器
English Abstract
Advances in optical fiber photothermal interferometry for gas detection
Miao Yin-Ping1,2,Jin Wei1,2,
Yang Fan1,2,
Lin Yue-Chuan1,2,
Tan Yan-Zhen1,2,
Hoi Lut1,2
1.Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China;
2.The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
Fund Project:Project supported by the National Natural Science Foundation of China (Grant Nos. 61535004, 61290313).Received Date:01 April 2017
Accepted Date:05 April 2017
Published Online:05 April 2017
Abstract:We report our recent work on the development of a highly sensitive gas detection technique-photothermal interferometry spectroscopy with hollow-core optical fibers. The basic principle of operation, generation and detection of dynamic photothermal phase modulation, and method to improve the response time of the hollow-core fiber sensors are described. The technique has ultra-high sensitivity and dynamic range, and the measurement is not affected by reflection/scattering and other non-absorbing losses. Sensors based on such a technique could be made compact in size with remote detection, multiplexing and networking capability, which would enable a range of high performance applications in environmental, medical and safety monitoring.
Keywords: photothermal spectroscopy/
hollow-core photonics bandgap fiber/
gas sensor/
optical fiber interferometry/
optical fiber sensor
