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A Compact Fabry-Perot Photothermal Gas Sensor with Hollow-core Optical Fiber

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Abstract

A compact and highly sensitive photothermal gas sensor with hollow-core fiber-based Fabry-Perot interferometer is reported. The noise equivalent concentration of 117 ppb acetylene is achieved with 2-cm-long hollow-core fiber.

© 2016 Optical Society of America

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