ArticleScientific reports2024
Numerical optimization of anti resonant hollow core fiber for high sensitivity methane detection.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study presents an innovative methane gas sensor design based on anti-resonant hollow-core fiber (AR-HCF) technology, optimized for high-precision detection at 3.3[Formula: see text]. Our numerical analysis explores the geometric optimization of the AR-HCF's structural parameters, incorporating real-world component specifications. The proposed design features a 65[Formula: see text] diameter hollow core surrounded by seven silica rings. We achieved significant improvements in confinement loss and optical power distribution through progressive structural modifications. The optimized structure demonstrated a confinement loss of [Formula: see text] and over 95% optical power confinement in the hollow core. Our model predicts a relative sensitivity of [Formula: see text], a response time of 5.4 s, and a theoretical detection threshold of 2.24 ppm. The limit of detection (LoD) was estimated to be 3.8 ppbv, and the normalized noise equivalent absorption (NNEA) coefficient was [Formula: see text]. The sensor response exhibited excellent linearity over its operating range, with an R
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