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High sensing accuracy realisation with millimetre/sub-millimetre resolution in optical frequency domain reflectometer
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Guo, Zhen, Yan, Jize, Han, Gaoce, Greenwood, David G., Marco, James and Yu, Yifei (2022) High sensing accuracy realisation with millimetre/sub-millimetre resolution in optical frequency domain reflectometer. Journal of Lightwave Technology, 40 (12). pp. 4050-4056. doi:10.1109/JLT.2022.3141596 ISSN 0733-8724.
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WRAP-High-sensing-accuracy-realisation-millimetre-sub-millimetre-optical-domain-reflectometer-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1450Kb) | Preview |
Official URL: https://doi.org/10.1109/JLT.2022.3141596
Abstract
By effectively suppressing the nonlinear sweep noise and random range of wavelength sweep in the optical frequency domain reflectometer, the theoretical spatial resolution and uniform sweep distribution are delivered for high sensing accuracy. A strain accuracy of 0.51 is realised with a 5 mm sensing resolution, while the accuracy is 5.89 with a 1 mm sensing resolution. Theoretical limitation between the strain accuracy and sensing resolution is further studied for the sub-millimetre resolution sensing. It is found that signal to noise ratio and frequency bandwidth of the calculated cross-correlation are critical factors in measuring accuracy. Increasing the sweep range can provide a better spatial frequency step for a high signal to noise ratio in the cross-correlation. With a 130 nm sweep range, the measurement accuracy is limited to 19.31 with a 0.5 mm sensing resolution. Besides, for the long-distance sensing of 104m, the measurement accuracy is 8.72 with a 1 mm sensing resolution.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
| Library of Congress Subject Headings (LCSH): | Interferometry, Signal processing -- Research, Laser communication systems, Fiber optics, Optical Communications, Optical fibers | |||||||||
| Journal or Publication Title: | Journal of Lightwave Technology | |||||||||
| Publisher: | IEEE | |||||||||
| ISSN: | 0733-8724 | |||||||||
| Official Date: | 15 June 2022 | |||||||||
| Dates: |
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| Volume: | 40 | |||||||||
| Number: | 12 | |||||||||
| Page Range: | pp. 4050-4056 | |||||||||
| DOI: | 10.1109/JLT.2022.3141596 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 14 January 2022 | |||||||||
| Date of first compliant Open Access: | 14 January 2022 | |||||||||
| RIOXX Funder/Project Grant: |
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