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Quasi-Distributed Absorption Sensing System Based on a Coherent Multiplexing Technique

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4 Author(s)
Zu-Guang Guan ; Centre for Opt. & Electromagn. Res., Zhejiang Univ., Hangzhou ; Bin Zhou ; Guorong Liu ; Sailing He

A coherence multiplexing scheme for quasi-distributed absorption sensors is introduced. The sensing units are designed with different optical path lengths, and the signals from the inline sensing array can be demultiplexed by a path-scanning Michelson interferometer. Intracavity absorbance in each unit can be deduced from the corresponding signal and the signals of the previous sensing units

Published in:

IEEE Photonics Technology Letters  (Volume:19 ,  Issue: 10 )