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Sensitive anti-interference trace methane detection system based on novel hollow-core anti-resonant fiber combined with wavelength modulation spectroscopy

delete2026-07-30
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PRE
AI
W
Wenke Zhang
张
张云刚 (Yungang Zhang)
J
Juncheng Li
C
C. Li
H
Haiyang Dong
B
Boya Han
X
Xingtao Zhao *
DOI：10.1016/j.talanta.2026.130384delete
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Abstract

Abstract

En 中文
• We fabricated hollow core anti-resonant fiber fibers features ultralow 0.001 dB/m loss and suppressed loss leakage. • The fiber replaces separate gas cells to build a miniature all-fiber 1654 nm DFB WMS methane detector. • Normalized demodulation removes laser drift, achieving linear response for 0.5-20 ppm methane (R2 = 0.99831). • The sensor reaches 0.02 ppm LOD with 60 s response, and faster detection at higher internal pressure. • Long-term field tests confirm strong stability and anti-interference for atmospheric and industrial gas monitoring.

Journal

Talanta cover
Talanta
IF:
6.1
Papers:
2.6W
Citations:
6.3W

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