European Workshop on Optical Fibre Sensors最新文献_第9页

Measurement of polarization fading sensitivity in FBGs-assisted Phase-OTDR fbgs辅助相位otdr偏振衰落灵敏度的测量

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2677355

Beni Fourier Sandah, M. Dossou, M. Wuilpart

引用次数: 0

Magnetic field sensing using laser written birefringent scattering medium 激光写入双折射散射介质的磁场传感

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678130

Przemyslaw Falak, Timothy Lee, Q. Sun, T. Vettenburg, D. Phillips, G. Brambilla, M. Beresna

引用次数: 0

Study of all-fiber Mach-Zehnder configuration with mode transition phenomena in double cladding fiber 双包层光纤中带模式跃迁现象的全光纤Mach-Zehnder组态研究

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678165

A. Srivastava, F. Esposito, S. Campopiano, A. Iadicicco

引用次数: 0

Temperature and RH response of polymer CYTOP FBG treated by gamma radiation 伽玛辐射处理下聚合物CYTOP FBG的温度和相对湿度响应

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678326

I. Chapalo, A. Gusarov, K. Chah, A. Ioannou, A. Pospori, Y. Nan, K. Kalli, P. Mégret

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Towards shape-sensing using time-expanded ΦOTDR 使用时间扩展的形状传感ΦOTDR

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678431

Camilo Escobar-Vera, M. Soriano-Amat, H. Martins, D. Barrera, S. Martín-López, M. González-Herráez, M. R. Fernandez Ruiz

{"title":"Towards shape-sensing using time-expanded ΦOTDR","authors":"Camilo Escobar-Vera, M. Soriano-Amat, H. Martins, D. Barrera, S. Martín-López, M. González-Herráez, M. R. Fernandez Ruiz","doi":"10.1117/12.2678431","DOIUrl":"https://doi.org/10.1117/12.2678431","url":null,"abstract":"Optical fiber sensors are becoming a prominent solution to perform shape sensing thanks to their interesting and well-known advantages such as flexibility, lightweight, sensitivity, etc. However, the different approaches commonly used to date, which include fiber Bragg gratings, OFDR or OTDR architectures, are not able to achieve a fully distributed and fast performance over relatively long ranges (e.g., tens of meters) and with fine (cm-scale) resolution. Here, we present a novel scheme to perform curvature sensing attaining all the previously mentioned features by application of time-expanded phase-sensitive (TE-Φ)OTDR technology. TE-ΦOTDR is a promising distributed sensing technique that delivers a performance ranging between that of OFDR and ΦOTDR. As a proof-of-concept, we interrogate three cores of a multicore fiber (MCF) using TE-ΦOTDR, attaining curvature sensing with 10 cm resolution over a maximum measurable range of 125 m and a sampling rate of 50 Hz. The implementation of shape sensing schemes with the performance provided by TE-ΦOTDR technology may open the door to new and interesting applications in civil engineering, medicine and seismology.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115746519","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}

引用次数: 0

Distributed Brillouin optical fiber temperature sensor for groundwater flow measurement 用于地下水流量测量的分布式布里渊光纤温度传感器

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2679978

M. Romanet, Alexandre Matic, M. Zerbib, K. Phan Huy, Jordan Labbe, Hélène Celle, J. Beugnot

引用次数: 0

Fiber optic hydrophones for underwater monitoring 水下监测用光纤水听器

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678297

F. Bruno, M. Janneh, S. Guardato, G. Donnarumma, G. Iannaccone, G. Gruca, S. Werzinger, A. Gunda, N. Rijnveld, A. Cutolo, M. Pisco, A. Cusano

{"title":"Fiber optic hydrophones for underwater monitoring","authors":"F. Bruno, M. Janneh, S. Guardato, G. Donnarumma, G. Iannaccone, G. Gruca, S. Werzinger, A. Gunda, N. Rijnveld, A. Cutolo, M. Pisco, A. Cusano","doi":"10.1117/12.2678297","DOIUrl":"https://doi.org/10.1117/12.2678297","url":null,"abstract":"We report on the development and field test of fiber optic hydrophones (FOHs). In details, we focused on the development of acoustic hydrophones for towed arrays applications and seismic hydrophones for seismological monitoring applications. In both cases, the sensing configuration is based on a Michelson interferometer where a fiber coil is wrapped around a compliant mandrel acting as a sensitive element. For the first application, acoustic hydrophones were characterized in an instrumented tank at Leonardo Finmeccanica premises. The hydrophone exhibited a responsivity of about 19 nm/Pa in the frequency range 3÷10 kHz with a resolution down to 300μPa /√Hz. The same FOHs were used as a basic building block to develop a towed array with five elements. By using the same enabling technology, but tailoring the physical and geometrical properties of hydrophones, we developed seismic hydrophones. The sensing system was integrated in the seismologic monitoring system and installed at Campi-Flegrei caldera. During the field trials, we detected several earthquakes occurred in the area and compared the results with a reference piezoelectric hydrophone. The seismic sequence was used to retrieve the sensor responsivity in the frequency range 1-80Hz. The sensing system exhibited a responsivity of about 300nm/Pa and an average noise floor level down to 100μPa/√Hz. The reported field trials demonstrated the capability of FOHs to operate in relevant environments and realistic scenarios.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123090559","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}

引用次数: 0

Fiber optic nanomechanical probe for single-cell mechanics analysis 用于单细胞力学分析的光纤纳米机械探针

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678308

C. Liao, Mengqiang Zou, Lei Xu, Y. Wang, Dejun Liu, Yiping Wang

引用次数: 0

Bragg grating inscription in BDK-doped PMMA optical fiber using femtosecond laser point-by-point technique 用飞秒激光逐点技术在掺bdk的PMMA光纤中刻录布拉格光栅

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678415

Jiaxin Li, Zhen Chen, Xin Cheng, H. Qu, C. Caucheteur, Xuehao Hu

引用次数: 0

Extended range of repeaterless distributed acoustic sensing with coherent OTDR interrogators utilising optical amplification 利用光学放大的相干OTDR询问器的无中继器分布式声传感扩展范围

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678084

M. A. Allousch, R. Crickmore, B. Marx, T. Jostmeier

{"title":"Extended range of repeaterless distributed acoustic sensing with coherent OTDR interrogators utilising optical amplification","authors":"M. A. Allousch, R. Crickmore, B. Marx, T. Jostmeier","doi":"10.1117/12.2678084","DOIUrl":"https://doi.org/10.1117/12.2678084","url":null,"abstract":"We demonstrate Distributed Acoustic Sensing (DAS) with extended distance range utilising repeaterless all-optical amplification and single-side interrogation schemes. This work addresses the need for over 200 km range of distributed fibre-optic sensing in applications where very long assets need to be monitored, e.g., subsea power cable monito ring. A commercially available DAS interrogator and an advanced prototype interrogator setup with increased system performance are used. Both are based on coherent OTDR to detect Rayleigh backscattering. Range extension is achieved by compensating optical losses with amplifying the pulse traveling down the fibre as well as the Rayleigh backscattered signal coming back to the interrogator. We do this by launching CW pump light into the sensing fibre to create a combination of distributed Raman amplification and a remote optically pumped amplifier in an erbium doped fibre. We analyse the DAS interrogator’s ability to detect acoustic events at distances between 170 km and 200 km of ultra-low loss telecom fibres in a quantitative and linear way. To this end, events are simulated by periodically modulating the length of a short fibre at those distances with a piezo fibre stretcher. Results show that the thereby created optical phase shift is correctly measured and that amplitude and frequency of the applied signal are successfully reconstructed. It is thereby proven that singleended DAS is possible with the presented interrogators and all optical amplification schemes to achieve at least 200 km range.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121582910","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}

引用次数: 0