I. Laarossi, Arturo Pardo Franco, Olga María Conde Portilla, María Ángeles Quintela Incera, J. L. Higuera
{"title":"ROTDR signal enhancement via deep convolutional denoising autoencoders trained with domain randomization","authors":"I. Laarossi, Arturo Pardo Franco, Olga María Conde Portilla, María Ángeles Quintela Incera, J. L. Higuera","doi":"10.1117/12.2540012","DOIUrl":"https://doi.org/10.1117/12.2540012","url":null,"abstract":"This work has been supported by Spanish CICYT (TEC2016-76021-C2-2-R), by ISCIII (DTS17-00055, INTRACARDIO) co-funded by EU-FEDER FUNDS and by the Spanish Ministry of Education, Culture and Sports through FPU16/05705.","PeriodicalId":439909,"journal":{"name":"Seventh European Workshop on Optical Fibre Sensors","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121080295","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}
B. Mikel, M. Jelínek, Š. Řeřucha, J. Hrabina, O. Cíp
{"title":"Ionizing radiation measurement using optical fibers","authors":"B. Mikel, M. Jelínek, Š. Řeřucha, J. Hrabina, O. Cíp","doi":"10.1117/12.2540001","DOIUrl":"https://doi.org/10.1117/12.2540001","url":null,"abstract":"We present our first results of ionizing radiation measurement using optical fibers and LYSO scintillator. The LYSO scintillator was used to detect the radiation and the silica optical fibers with 1 mm fiber core was used to deliver scintillation radiation from LYSO to single photon counter. We present our setups and measurement results of several ionizing sources Co-60, Cs-134, Cs-137 and Am-241 with different level of the activities. Focus to measurement gamma radiation of these nuclides was motivated by the research of measurement possibilities in the nuclear power plants by optical fibers. Used nuclides have different level of radiation energies and can be used to design and optimize of the measurement setup. We used one and four optical fibers with different types of collimation at both ends of the optical fibers to deliver scintillation radiation to the single photon counter. The comparison of these setups of the measurement is presented. Our measurement confirmed the optical fibers can be used to measure radiation of these nuclides with activities from tenths up to hundreds kBq. Next will be verified the measurement of higher level of radiation activities.","PeriodicalId":439909,"journal":{"name":"Seventh European Workshop on Optical Fibre Sensors","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121168292","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}
D. Kacik, N. Tarjányi, I. Martincek, R. Jamier, G. Humbert, P. Roy, J. Auguste
{"title":"Hi-Bi optical fiber sensor for measuring small weight","authors":"D. Kacik, N. Tarjányi, I. Martincek, R. Jamier, G. Humbert, P. Roy, J. Auguste","doi":"10.1117/12.2539910","DOIUrl":"https://doi.org/10.1117/12.2539910","url":null,"abstract":"An optical fiber sensor consisting of short sample of experimental Hi-Bi optical fiber integrated between two single mode (SM) optical fibers is proposed and experimentally demonstrated. The experimental fiber consists of core with diameter equals 8.5 μm and the two side Stress Applied Part (SAP) of diameter 25 μm. The SAPs are made of Al-Ladoped silica. The birefringence of the fiber is 3.19·10-4. We measured spectral distribution of intensity at the output of the SM fiber as function of the analyzer's adjustment angle and the suitable position of the analyzer was determined. Then we applied the bodies with weights up to 100 g on the fiber for two significant positions of SAPs: SAPs were next to each other and above each other. Evaluation of the measurements were done by the peak-to-peak amplitude of optical power difference (in dB) of two measurement for which we determine the applied force (weight). The sensitivities were determined to be 0.081 dB/g for SAPs next to each other and 0.037 dB/g for second position of SAPs, respectively. From the results it follows that the sensor could be used not only for determination of lateral force but also for determination of applied force position.","PeriodicalId":439909,"journal":{"name":"Seventh European Workshop on Optical Fibre Sensors","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116542598","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}
A. Garcia-Ruiz, A. Morana, H. Martins, S. Martín-López, M. González-Herráez, S. Delepine-Lesoille, A. Boukenter, Y. Ouerdane, S. Girard
{"title":"Hydrogen and deuterium distributed sensing using chirped pulse φOTDR","authors":"A. Garcia-Ruiz, A. Morana, H. Martins, S. Martín-López, M. González-Herráez, S. Delepine-Lesoille, A. Boukenter, Y. Ouerdane, S. Girard","doi":"10.1117/12.2539094","DOIUrl":"https://doi.org/10.1117/12.2539094","url":null,"abstract":"The detection and quantification of the presence of certain chemical species is of central importance regarding permanent structural health monitoring of key industrial fields and civil infrastructures such as oil extraction boreholes or radioactive waste repositories, where H2 is released. With this work we propose and test a competitive technique able to measure the concentration of hydrogen and deuterium thanks to their diffusion into the silica glass of a standard optical fiber, already employed for the distributed monitoring of large infrastructures. The proposed technique, based on Chirped-Pulse Phasesensitive Reflectometry (CP-φOTDR), could represent a novel solution for this problem, thanks to its ability to provide dynamical measurements of refractive index change, with great linearity and sensitivities of 10-8 refractive index units, featuring spatial resolutions of a few meters and kilometric sensing ranges.","PeriodicalId":439909,"journal":{"name":"Seventh European Workshop on Optical Fibre Sensors","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127668261","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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