{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,20]],"date-time":"2026-04-20T14:31:09Z","timestamp":1776695469173,"version":"3.51.2"},"reference-count":63,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2019,4,10]],"date-time":"2019-04-10T00:00:00Z","timestamp":1554854400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Research and Development (R&amp;D) Projects of Shanxi Province","award":["201803D121071 and 201703D321037"],"award-info":[{"award-number":["201803D121071 and 201703D321037"]}]},{"name":"Coal-Bed Methane Joint Research Fund of Shanxi Province","award":["2015012005 and 2016012011"],"award-info":[{"award-number":["2015012005 and 2016012011"]}]},{"name":"Natural Science Foundation of Shanxi","award":["201701D221115"],"award-info":[{"award-number":["201701D221115"]}]},{"name":"Research Project Supported by Shanxi Scholarship Council of China","award":["2016-035"],"award-info":[{"award-number":["2016-035"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Recently, phase-sensitive Optical Time-Domain Reflectometry (\u03a6-OTDR)-based vibration sensor systems have gained the interest of many researchers and some efforts have been undertaken to push the performance limitations of \u03a6-OTDR sensor systems. Thus, progress in different areas of their performance evaluation factors such as improvement of the signal-to-noise ratio (SNR), spatial resolution (SR) in the sub-meter range, enlargement of the sensing range, increased frequency response bandwidth over the conventional limits, phase signal demodulation and chirped-pulse \u03a6-OTDR for quantitative measurement have been realized. This paper presents an overview of the recent progress in \u03a6-OTDR-based vibration sensing systems in the different areas mentioned above.<\/jats:p>","DOI":"10.3390\/s19071709","type":"journal-article","created":{"date-parts":[[2019,4,10]],"date-time":"2019-04-10T11:25:08Z","timestamp":1554895508000},"page":"1709","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":62,"title":["Recent Progress in the Performance Enhancement of Phase-Sensitive OTDR Vibration Sensing Systems"],"prefix":"10.3390","volume":"19","author":[{"given":"Romain","family":"Zinsou","sequence":"first","affiliation":[{"name":"Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China"}]},{"given":"Xin","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4919-4390","authenticated-orcid":false,"given":"Yu","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China"}]},{"given":"Jianguo","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China"}]},{"given":"Yuncai","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5737-0374","authenticated-orcid":false,"given":"Baoquan","family":"Jin","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China"},{"name":"State Key Laboratory of Coal and CBM Co-mining, Jincheng 048000, China"}]}],"member":"1968","published-online":{"date-parts":[[2019,4,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4152","DOI":"10.3390\/s110404152","article-title":"Recent progress in Brillouin scattering based fiber sensors","volume":"11","author":"Bao","year":"2011","journal-title":"Sensors"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Lin, W., Zhang, C., Li, L., and Liang, S. 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