E. Renner, Max Koeppel, Bernhard Schmauss Institute of Microwaves, Photonics, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen, H Germany, M. Light
Jasper Podschus, Max Koeppel, B. Schmauss, Abhinav Sharma, S. Sundaramahalingam, S. Xie, Philip St.J. Russell Institute of Microwaves, Photonics, Friedrich-Alexander-Universitat Erlangen-Nurnberg, M. Light, D. Physics
{"title":"Combined Effect of Multi-Reflection and Spectral Shadowing Crosstalk in Phase-OTDR System Using Fiber Bragg Grating Array","authors":"E. B. Kocal, K. Yuksel, M. Wuilpart","doi":"10.1364/ofs.2020.t3.40","DOIUrl":"https://doi.org/10.1364/ofs.2020.t3.40","url":null,"abstract":"","PeriodicalId":428369,"journal":{"name":"Optical Fiber Sensors Conference 2020 Special Edition","volume":"146 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121012588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Long-range Rayleigh-based Distributed Acoustic Sensing (DAS) systems are often limited in their sensitivity and bandwidth. The former limitation is a result of the low backscattered power and poor textit{dynamic-strain to optical-phase} transduction efficiency. The latter constraint results from the trade-off between range and scan-rate which limits the sampling interval to the longest delay in the sensing fiber. Quasi-DAS (Q-DAS) can yield enhanced sensitivity but may still suffer from low backscattered power and low scan-rate for long-haul, many-sensor, systems. In this work we study the use of Perfect Periodic Correlation codes for interrogating a long-haul Q-DAS system. It is shown that judicious choice of the code parameters allows order of magnitude increase in detection bandwidths and in the power reflected from each sensor.
{"title":"Quasi-distributed fiber sensing via perfect periodic Legendre codes","authors":"N. Arbel, Lihi Shiloh, N. Levanon, A. Eyal","doi":"10.1364/ofs.2020.t1.2","DOIUrl":"https://doi.org/10.1364/ofs.2020.t1.2","url":null,"abstract":"Long-range Rayleigh-based Distributed Acoustic Sensing (DAS) systems are often limited in their sensitivity and bandwidth. The former limitation is a result of the low backscattered power and poor textit{dynamic-strain to optical-phase} transduction efficiency. The latter constraint results from the trade-off between range and scan-rate which limits the sampling interval to the longest delay in the sensing fiber. Quasi-DAS (Q-DAS) can yield enhanced sensitivity but may still suffer from low backscattered power and low scan-rate for long-haul, many-sensor, systems. In this work we study the use of Perfect Periodic Correlation codes for interrogating a long-haul Q-DAS system. It is shown that judicious choice of the code parameters allows order of magnitude increase in detection bandwidths and in the power reflected from each sensor.","PeriodicalId":428369,"journal":{"name":"Optical Fiber Sensors Conference 2020 Special Edition","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122098979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Zaslawski, Yun Fu, Zhisheng Yang, K. Markiewicz, L. Szostkiewicz, T. Nasilowski, L. Thévenaz
{"title":"Opto-mechanical cross-talk reduction in air-holes multicore fibers","authors":"S. Zaslawski, Yun Fu, Zhisheng Yang, K. Markiewicz, L. Szostkiewicz, T. Nasilowski, L. Thévenaz","doi":"10.1364/ofs.2020.w2a.1","DOIUrl":"https://doi.org/10.1364/ofs.2020.w2a.1","url":null,"abstract":"","PeriodicalId":428369,"journal":{"name":"Optical Fiber Sensors Conference 2020 Special Edition","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115722968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Kim, Chang-Seok Kim, Hyunjoo Kim, Yong-seok Kwon, Ga-ye Park, Jaesun Kim
{"title":"Enhanced spatial resolution of quasi-distributed weak fiber Bragg grating array sensor based on wavelength- division resonance frequency mapping","authors":"G. Kim, Chang-Seok Kim, Hyunjoo Kim, Yong-seok Kwon, Ga-ye Park, Jaesun Kim","doi":"10.1364/ofs.2020.t3.56","DOIUrl":"https://doi.org/10.1364/ofs.2020.t3.56","url":null,"abstract":"","PeriodicalId":428369,"journal":{"name":"Optical Fiber Sensors Conference 2020 Special Edition","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120846036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Production of ZBLAN Optical Fiber in Microgravity","authors":"D. Tucker, Mike Sansoucie","doi":"10.1364/ofs.2020.t2b.1","DOIUrl":"https://doi.org/10.1364/ofs.2020.t2b.1","url":null,"abstract":"","PeriodicalId":428369,"journal":{"name":"Optical Fiber Sensors Conference 2020 Special Edition","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125869290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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