High Sensitivity All-Fibre Methane Sensor With Gas Permeable Teflon/Cryptophane-A Membrane

Rand Ismaeel,Alexander Beaton, Andrei Donko,Wanvisa Talataisong,Timothy Lee,Thierry Brotin,Martynas Beresna,Matthew Mowlem,Gilberto Brambilla

2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)（2019）

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摘要

We demonstrate a simple, cheap and compact all fibre methane sensor, with record sensitivity of 0.16 nm/ppm, composed of a D-shaped cross section optical fibre in between two fibre Bragg gratings. The flat side of the fibre is coated with a unique membrane used to solely detect methane, made by a gas permeable Teflon layer and doped with cryptophane-A molecules.

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关键词

gas permeable Teflon layer,fibre Bragg gratings,D-shaped cross section optical fibre,record sensitivity,high sensitivity all-fibre methane sensor,cryptophane-A molecules,unique membrane

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