Abstract
In recent years, the advantages of HCF as a gas analysis platform have been continuously explored. Gas sensing technology based on HCF spectroscopy has also developed rapidly, and the detection limit of such system has reached the level of several pptv. This article first summarizes the manufacturing, connection, and post-processing technologies of HCF that are closely related to the performance of spectroscopic gas sensing systems. Then, several HCF sensing structures (interferometers and gratings) which are widely used in gas sensing, are introduced. Next, the structure and performance of typical HCF-based DAS (direct absorption spectroscopy), PTS (photothermal spectroscopy) and PAS (photoacoustic spectroscopy) gas sensing system are analyzed. The development of HCF spectroscopic gas sensing technology is finally prospected.
| Original language | English |
|---|---|
| Article number | 103824 |
| Journal | Optical Fiber Technology |
| Volume | 88 |
| DOIs | |
| Publication status | Published - Dec 2024 |
Keywords
- Fiber connection
- Fiber interferometer
- Hollow core fiber
- Photothermal
- Spectroscopic gas sensor
ASJC Scopus subject areas
- Control and Systems Engineering
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Electrical and Electronic Engineering