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Conferences > WSOF > 2015 > WT4A > WT4A.34

Stable Operation of All-Optical Fibre Photoacoustic Sensors

Yuechuan Lin, Wei Jin, Jun Ma, Chao Wang, Fan Yang, and Hoi Lut Ho

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Abstract

Stable operation of graphene-diaphragm based fiber-tip photoacoustic gas sensor is achieved by use of a modified Sagnac interferometer with a 3x3 coupler. A detection limit of 1.5 ppm of C2H2 balanced with 𝑁2 is demonstrated and the system stability is <0.4 dB over 6 hours.

© 2015 Optical Society of America

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