{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T19:49:44Z","timestamp":1790711384990,"version":"4.1.0"},"reference-count":31,"publisher":"Optica Publishing Group","issue":"6","license":[{"start":{"date-parts":[[2020,3,13]],"date-time":"2020-03-13T00:00:00Z","timestamp":1584057600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v1#VOR-OA"},{"start":{"date-parts":[[2020,3,13]],"date-time":"2020-03-13T00:00:00Z","timestamp":1584057600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61575052"],"award-info":[{"award-number":["61575052"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61775049"],"award-info":[{"award-number":["61775049"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Express"],"published-print":{"date-parts":[[2020,3,16]]},"abstract":"<jats:p>We present an innovative spectroscopic method based on coherent optical frequency-modulated continuous-wave (FMCW) interferometry that can realize multi-point gas detection with high spatial resolution, high sensitivity, and high selectivity. This method takes full advantage of the intrinsic capability of spatial localization of the coherent FMCW, meanwhile efficiently decodes the spectral information from the reflected optical signals. Gas sensors are deployed by adopting bus topology, i.e., distributed along a single backbone fiber in the measurement arm of the FMCW interferometer. For validation, a multi-point acetylene gas sensing system with three sensing nodes is experimentally demonstrated. The transmission spectra of the three gas sensors are accurately extracted, and their corresponding gas concentrations are efficiently retrieved with a low crosstalk below -30 dB. The demonstrated system achieves a sensitivity of 55 ppm (noise equivalent absorbance of 0.004) over a distance of 52 m, with a sensing spatial resolution of 30 cm and a spectral resolution of 0.5 GHz. Our proposed method promotes a novel way for the development of multi-point spectroscopic gas sensing systems for challenging applications such as gas leakage detection and gas emission monitoring, where spatially resolved chemical analysis over a large area is required.<\/jats:p>","DOI":"10.1364\/oe.389746","type":"journal-article","created":{"date-parts":[[2020,3,5]],"date-time":"2020-03-05T08:30:06Z","timestamp":1583397006000},"page":"9014","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["Multi-point spectroscopic gas sensing based on coherent FMCW interferometry"],"prefix":"10.1364","volume":"28","author":[{"given":"Xiutao","family":"Lou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yabo","family":"Feng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongkang","family":"Dong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2020,3,13]]},"reference":[{"key":"oe-28-6-9014-R1","doi-asserted-by":"publisher","first-page":"97","DOI":"10.1016\/j.jlp.2016.03.010","volume":"41","author":"Datta","year":"2016","journal-title":"J. Loss Prevent. Proc."},{"key":"oe-28-6-9014-R2","doi-asserted-by":"publisher","first-page":"1064","DOI":"10.1109\/JLT.0082.921915","volume":"26","author":"Culshaw","year":"2008","journal-title":"J. Lightwave Technol."},{"key":"oe-28-6-9014-R3","doi-asserted-by":"publisher","first-page":"50","DOI":"10.1016\/j.optlaseng.2018.10.013","volume":"114","author":"Wang","year":"2019","journal-title":"Opt. Lasers Eng."},{"key":"oe-28-6-9014-R4","doi-asserted-by":"publisher","first-page":"186","DOI":"10.1016\/j.atmosenv.2012.11.060","volume":"70","author":"Mead","year":"2013","journal-title":"Atmos. Environ."},{"key":"oe-28-6-9014-R5","doi-asserted-by":"publisher","first-page":"607","DOI":"10.1016\/j.snb.2013.11.005","volume":"192","author":"Kim","year":"2014","journal-title":"Sensor. Actuat. B"},{"key":"oe-28-6-9014-R6","doi-asserted-by":"publisher","first-page":"012004","DOI":"10.1088\/0957-0233\/24\/1\/012004","volume":"24","author":"Hodgkinson","year":"2013","journal-title":"Meas. Sci. Technol."},{"key":"oe-28-6-9014-R7","doi-asserted-by":"publisher","first-page":"197","DOI":"10.1016\/S1386-1425(97)00227-8","volume":"54","author":"Werle","year":"1998","journal-title":"Spectrochim. Acta A"},{"key":"oe-28-6-9014-R8","doi-asserted-by":"publisher","first-page":"227","DOI":"10.1016\/S0925-4005(98)00199-3","volume":"51","author":"Stewart","year":"1998","journal-title":"Sensor. Actuat. B"},{"key":"oe-28-6-9014-R9","doi-asserted-by":"publisher","first-page":"133","DOI":"10.1007\/s00340-014-6001-0","volume":"119","author":"Schoonbaert","year":"2015","journal-title":"Appl. Phys. B"},{"key":"oe-28-6-9014-R10","doi-asserted-by":"publisher","first-page":"5290","DOI":"10.1364\/AO.38.005290","volume":"38","author":"Jin","year":"1999","journal-title":"Appl. Opt."},{"key":"oe-28-6-9014-R11","doi-asserted-by":"publisher","first-page":"1249","DOI":"10.3390\/rs11101249","volume":"11","author":"Floridia","year":"2019","journal-title":"Remote Sens-Basel"},{"key":"oe-28-6-9014-R12","doi-asserted-by":"publisher","first-page":"361","DOI":"10.1016\/S0030-4018(03)01421-4","volume":"220","author":"Zhang","year":"2003","journal-title":"Opt. Commun."},{"key":"oe-28-6-9014-R13","doi-asserted-by":"publisher","first-page":"095104","DOI":"10.1088\/0957-0233\/24\/9\/095104","volume":"24","author":"Lu","year":"2013","journal-title":"Meas. Sci. Technol."},{"key":"oe-28-6-9014-R14","doi-asserted-by":"publisher","first-page":"1546","DOI":"10.1109\/68.887743","volume":"12","author":"Ho","year":"2000","journal-title":"IEEE Photonic. Tech. L."},{"key":"oe-28-6-9014-R15","doi-asserted-by":"publisher","first-page":"1011","DOI":"10.1364\/AO.40.001011","volume":"40","author":"Yu","year":"2001","journal-title":"Appl. Opt."},{"key":"oe-28-6-9014-R16","doi-asserted-by":"publisher","first-page":"5356","DOI":"10.1109\/JLT.2009.2030776","volume":"27","author":"Ye","year":"2009","journal-title":"J. Lightwave Technol."},{"key":"oe-28-6-9014-R17","doi-asserted-by":"publisher","first-page":"9285","DOI":"10.1364\/OE.26.009285","volume":"26","author":"Hariyama","year":"2018","journal-title":"Opt. Express"},{"key":"oe-28-6-9014-R18","doi-asserted-by":"publisher","first-page":"15420","DOI":"10.1364\/OE.26.015420","volume":"26","author":"Lum","year":"2018","journal-title":"Opt. Express"},{"key":"oe-28-6-9014-R19","doi-asserted-by":"publisher","first-page":"9965","DOI":"10.1364\/OE.27.009965","volume":"27","author":"Zhang","year":"2019","journal-title":"Opt. Express"},{"key":"oe-28-6-9014-R20","doi-asserted-by":"publisher","first-page":"2872","DOI":"10.1364\/OL.43.002872","volume":"43","author":"Lou","year":"2018","journal-title":"Opt. Lett."},{"key":"oe-28-6-9014-R21","doi-asserted-by":"publisher","first-page":"3","DOI":"10.1016\/j.jqsrt.2017.06.038","volume":"203","author":"Gordon","year":"2017","journal-title":"J. Quant. Spectrosc. Radiat. Transf."},{"key":"oe-28-6-9014-R22","doi-asserted-by":"publisher","first-page":"135","DOI":"10.1016\/S0263-2241(98)00074-8","volume":"25","author":"Breitenbach","year":"1999","journal-title":"Measurement"},{"key":"oe-28-6-9014-R23","doi-asserted-by":"publisher","first-page":"111","DOI":"10.1109\/MSP.2011.941097","volume":"28","author":"Schafer","year":"2011","journal-title":"IEEE Signal Proc. Mag."},{"key":"oe-28-6-9014-R24","doi-asserted-by":"publisher","first-page":"1069","DOI":"10.1109\/68.157152","volume":"4","author":"Takada","year":"1992","journal-title":"IEEE Photonic. Tech. L."},{"key":"oe-28-6-9014-R25","doi-asserted-by":"publisher","first-page":"1377","DOI":"10.1109\/50.254098","volume":"11","author":"Glombitza","year":"1993","journal-title":"J. Lightwave Technol."},{"key":"oe-28-6-9014-R26","doi-asserted-by":"publisher","first-page":"190012","DOI":"10.29026\/oea.2019.190012","volume":"2","author":"Li","year":"2019","journal-title":"Opto-Electron. Adv."},{"key":"oe-28-6-9014-R27","doi-asserted-by":"publisher","first-page":"13139","DOI":"10.1364\/OE.16.013139","volume":"16","author":"Moore","year":"2008","journal-title":"Opt. Express"},{"key":"oe-28-6-9014-R28","doi-asserted-by":"publisher","first-page":"1789","DOI":"10.1364\/OE.25.001789","volume":"25","author":"Garcia-Ruiz","year":"2017","journal-title":"Opt. Express"},{"key":"oe-28-6-9014-R29","doi-asserted-by":"publisher","first-page":"31568","DOI":"10.1364\/OE.25.031568","volume":"25","author":"Lin","year":"2017","journal-title":"Opt. Express"},{"key":"oe-28-6-9014-R30","doi-asserted-by":"publisher","first-page":"6767","DOI":"10.1038\/ncomms7767","volume":"6","author":"Jin","year":"2015","journal-title":"Nat. Commun."},{"key":"oe-28-6-9014-R31","doi-asserted-by":"publisher","first-page":"4048","DOI":"10.1364\/OL.44.004048","volume":"44","author":"Yao","year":"2019","journal-title":"Opt. Lett."}],"container-title":["Optics Express"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/opg.optica.org\/viewmedia.cfm?URI=oe-28-6-9014&seq=0","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T19:27:06Z","timestamp":1722972426000},"score":1,"resource":{"primary":{"URL":"https:\/\/opg.optica.org\/abstract.cfm?URI=oe-28-6-9014"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,3,13]]},"references-count":31,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2020]]},"published-print":{"date-parts":[[2020]]}},"URL":"https:\/\/doi.org\/10.1364\/oe.389746","relation":{},"ISSN":["1094-4087"],"issn-type":[{"value":"1094-4087","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,3,13]]},"assertion":[{"value":"Optica Publishing Group","name":"publisher","label":"This article is maintained by"},{"value":"https:\/\/doi.org\/10.1364\/OE.389746","name":"articlelink","label":"Crossref DOI link to publisher maintained version"},{"value":"research-article","name":"content_type","label":"Article type"},{"value":"Screened by Similarity Check","name":"cross_check","label":"Similarity check"},{"value":"Yes","order":0,"name":"peer_reviewed","label":"Peer reviewed","group":{"name":"peer_review","label":"Peer review"}},{"value":"Single blind","order":1,"name":"review_process","label":"Review process","group":{"name":"peer_review","label":"Peer review"}},{"value":"5 February 2020","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"5 March 2020","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"13 March 2020","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}},{"value":"\u00a9 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement","name":"copyright","label":"Copyright"}]}}