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Analysis on spatial and temporal resolution in photonic time stretch frequency domain reflectometry based fully distributed fiber Bragg grating sensors

Ahmad, Eamonn J, Feng, Dejun, Wang, Chao (2017) Analysis on spatial and temporal resolution in photonic time stretch frequency domain reflectometry based fully distributed fiber Bragg grating sensors. In: The 15th International Conference on Optical Communications and Networks (ICOCN 2016), 24-27 Sep 2016, Hangzhou, China. (doi:10.1109/ICOCN.2016.7875829)

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Abstract

We propose and experimentally demonstrate fully distributed strain sensing along the length of a linearly chirped fibre Bragg grating with simultaneously high spatial and temporal resolution based on photonic time stretch frequency domain reflectometry (PTS-FDR). The distributed strain information is reconstructed from the instantaneous RF frequency of a temporal interference waveform via short-time Fourier transform analysis. The utility of the proposed method is characterized by analysing the spatial and temporal resolution obtained. An ultrafast strain measurement at a speed of 50 MHz with a high spatial resolution of 31.5 µm over a gauge length of 25 mm and a strain resolution of 9.1 µ? have been achieved.

Item Type: Conference or workshop item (Paper)
DOI/Identification number: 10.1109/ICOCN.2016.7875829
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK8300 Optoelectronic devices
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Chao Wang
Date Deposited: 13 Jul 2016 11:31 UTC
Last Modified: 29 May 2019 17:34 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/56282 (The current URI for this page, for reference purposes)
Wang, Chao: https://orcid.org/0000-0002-0454-8079
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