scholarly journals Laser-Based Trace Gas Detection inside Hollow-Core Fibers: A Review

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3983
Author(s):  
Michal Nikodem
Keyword(s):  
Optical Fibers ◽  
Gas Sensing ◽  
Photonic Band Gap ◽  
Gas Detection ◽  
Trace Gas ◽  
Hollow Core ◽  
Trace Gas Detection ◽  
Optical Wave ◽  
Sensing Systems ◽  
Photonic Band

Thanks to the guidance of an optical wave in air, hollow-core fibers may serve as sampling cells in an optical spectroscopic system. This paper reviews applications of hollow-core optical fibers to laser-based gas sensing. Three types of hollow-core fibers are discussed: Hollow capillary waveguides, photonic band-gap fibers, and negative curvature fibers. Their advantages and drawbacks when used for laser-based trace gas detection are analyzed. Various examples of experimental sensing systems demonstrated in the literature over the past 20 years are discussed.

scholarly journals Mid-Infrared Tunable Laser-Based Broadband Fingerprint Absorption Spectroscopy for Trace Gas Sensing: A Review

2019 ◽  
Vol 9 (2) ◽  
pp. 338 ◽  
Author(s):  
Zhenhui Du ◽  
Shuai Zhang ◽  
Jinyi Li ◽  
Nan Gao ◽  
Kebin Tong
Keyword(s):  
Absorption Spectroscopy ◽  
Gas Sensing ◽  
Tunable Laser ◽  
Gas Detection ◽  
Trace Gas ◽  
Spectroscopic Techniques ◽  
Trace Gas Detection ◽  
Absorption Bands ◽  
Mid Infrared ◽  
Broadband Absorption

The vast majority of gaseous chemical substances exhibit fundamental rovibrational absorption bands in the mid-infrared spectral region (2.5–25 μm), and the absorption of light by these fundamental bands provides a nearly universal means for their detection. A main feature of optical techniques is the non-intrusive in situ detection of trace gases. We reviewed primarily mid-infrared tunable laser-based broadband absorption spectroscopy for trace gas detection, focusing on 2008–2018. The scope of this paper is to discuss recent developments of system configuration, tunable lasers, detectors, broadband spectroscopic techniques, and their applications for sensitive, selective, and quantitative trace gas detection.

scholarly journals Mid-infrared hollow-core Bragg fiber for trace gas detection

2010 ◽  
Vol 59 (12) ◽  
pp. 8640
Author(s):  
Xing Wen-Xin ◽  
Zhang Wei ◽  
Shi Li-Chao ◽  
Wang Wen ◽  
Zhao Hong ◽  
...  
Keyword(s):  
Gas Detection ◽  
Trace Gas ◽  
Hollow Core ◽  
Trace Gas Detection ◽  
Mid Infrared ◽  
Bragg Fiber

Design of Hollow-Core Bragg Fiber with Broadband Transmission for Trace-Gas Detection

2013 ◽  
Vol 40 (2) ◽  
pp. 0205004
Author(s):  
尚亮 Shang Liang ◽  
张立春 Zhang Lichun ◽  
亓丽梅 Qi Limei
Keyword(s):  
Gas Detection ◽  
Trace Gas ◽  
Hollow Core ◽  
Trace Gas Detection ◽  
Bragg Fiber

Acoustic Pressure Sensing with Hollow-Core Photonic Bandgap Fibers

2015 ◽  
Vol 738-739 ◽  
pp. 61-64 ◽  
Author(s):  
Adel Abdallah ◽  
Chao Zhu Zhang ◽  
Zhi Zhong
Keyword(s):  
Optical Fibers ◽  
Acoustic Pressure ◽  
Photonic Band Gap ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Hollow Core ◽  
Pressure Sensing ◽  
Design Flexibility ◽  
Crystal Fibers ◽  
Photonic Band

Recently, photonic crystal fibers (PCFs) have attracted many researchers because of their special characteristics, and design flexibility that cannot be realized by conventional fibers. One of the important areas of research is the optical fiber hydrophones. In this paper, the finite element solver COMSOL multiphysics (FES) is used to study and compare the phase sensitivity to acoustic pressure of a hollow-core photonic band gap fiber (HC-PBF), and a conventional single-mode fiber (SMF) for various acoustic pressures in the frequency range from 10 kHz to 50 kHz. Simulation results of the investigated optical fibers show that the normalized responsivity (NR) to acoustic pressure of the investigated HC-PBF, and SMF are-344 dB, and-366 dB, respectively.

scholarly journals Enhanced two-photon absorption in a hollow-core photonic-band-gap fiber

2011 ◽  
Vol 83 (3) ◽  
Author(s):  
Kasturi Saha ◽  
Vivek Venkataraman ◽  
Pablo Londero ◽  
Alexander L. Gaeta
Keyword(s):  
Band Gap ◽  
Photonic Band Gap ◽  
Photon Absorption ◽  
Hollow Core ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photonic Band
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