Implementing a temperature-resistant fiber hydrophone sensor using FBG

Mohammadmasoud Zabihi; Xuping Zhang

doi:10.1117/12.2503804

5 November 2018 Implementing a temperature-resistant fiber hydrophone sensor using FBG

Mohammadmasoud Zabihi, Xuping Zhang

Proceedings Volume 10814, Optoelectronic Devices and Integration VII; 108140Q (2018) https://doi.org/10.1117/12.2503804
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

A new type of fiber acoustic sensor (hydrophone) is exhibited here with two fiber Bragg gratings (FBG) and a unique demodulation method. Almost all former FBG sensors had separated detecting and demodulating components while this FBG hydrophone has an idiomatic structure for both detecting and demodulating method, it utilizes a couple of same cascaded FBGs, as well as a barrel shaped structure. The physical form of the hydrophone helps us to overcome the effects of temperature noises and it will even help us for localization purposes in future works. We successfully reached more than 0.5nm/MPa sensitivity which is appropriate for environments with less than 200dB pressure.

Citation Download Citation

Mohammadmasoud Zabihi and Xuping Zhang "Implementing a temperature-resistant fiber hydrophone sensor using FBG", Proc. SPIE 10814, Optoelectronic Devices and Integration VII, 108140Q (5 November 2018); https://doi.org/10.1117/12.2503804

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