期刊
SENSORS
卷 20, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/s20102996
关键词
hollow-core photonic crystal fibers; optical fiber devices; fiber gas sensing
资金
- National Natural Science Foundation of China [61775041, 61475119]
- Shanghai Pujiang Program [17PJ1400600]
- National Key R&D Program of China [2016YFC0201401]
- State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, China [2019GZKF03009]
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology [2017B030301007]
Fiber gas sensing techniques have been applied for a wide range of industrial applications. In this paper, the basic fiber gas sensing principles and the development of different fibers have been introduced. In various specialty fibers, hollow-core photonic crystal fibers (HC-PCFs) can overcome the fundamental limits of solid fibers and have attracted intense interest recently. Here, we focus on the review of HC-PCF gas sensing, including the light-guiding mechanisms of HC-PCFs, various sensing configurations, microfabrication approaches, and recent research advances including the mid-infrared gas sensors via hollow core anti-resonant fibers. This review gives a detailed and deep understanding of HC-PCF gas sensors and will promote more practical applications of HC-PCFs in the near future.
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