Simultaneous Distributed Acoustic and Temperature Sensing Using a Multimode Fiber

Yuan Mao, Islam Ashry, Frode Hveding, Ahmed Bukhamsin, Yuxi Hong, Tien Khee Ng, Boon S. Ooi

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Fiber optic distributed acoustic sensor (DAS) and distributed temperature sensor (DTS) are considerably important for many applications. It is challenging to design a hybrid DAS-DTS system using the same optical fiber because the operation principles of the two sensors are different. We here deploy the widespread standard multimode fiber (MMF) for simultaneous distributed acoustic and temperature sensing. In particular, we operate the MMF in a quasi-single-mode (QSM) state to simultaneously fulfill the functionality requirements of the DAS and DTS. The reported design offers simultaneous vibration and temperature monitoring with high accuracy. In particular, the DAS has a 12.98 dB mean signal-to-noise ratio (SNR) and the DTS offers temperature measurements with ±1 °C accuracy. This technique is significant for many industrial applications because it efficiently tackles a long-standing issue in practical implementation.
Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume26
DOIs
StatePublished - Jan 8 2020

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