Relevant bibliographies by topics / Distributed reflectometry

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Distributed reflectometry'

Author: Grafiati
Published: 25 May 2024
Last updated: 19 July 2025

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Journal articles on the topic "Distributed reflectometry"

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Gorlov, N. I., and I. V. Bogachkov. "DISTRIBUTED SENSING OF FIBER-OPTIC COMMUNICATION LINES USING BRILLOUIN SCATTERING." DYNAMICS OF SYSTEMS, MECHANISMS AND MACHINES 11, no. 4 (2023): 71–75. http://dx.doi.org/10.25206/2310-9793-2023-11-4-71-75.

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The report discusses the main aspects of distributed sensing of fiber-optic communication lines using Brillouin scattering. The results of the study of the main functional capabilities of the method of coherent reflectometry and the method of counter propagating waves are presented. Special attention is paid to the principles of construction of reflectometric systems and the analysis of requirements for optical radiation sources. In conclusion, the main problems and prospects of practical implementation of the investigated method in the practice of monitoring fiber-optic communication lines ar
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Mizuno, Yosuke, Neisei Hayashi, Hideyuki Fukuda, Kwang Yong Song, and Kentaro Nakamura. "Ultrahigh-speed distributed Brillouin reflectometry." Light: Science & Applications 5, no. 12 (2016): e16184-e16184. http://dx.doi.org/10.1038/lsa.2016.184.

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Zahoor, Rizwan, Raffaele Vallifuoco, Luigi Zeni, and Aldo Minardo. "Distributed Temperature Sensing through Network Analysis Frequency-Domain Reflectometry." Sensors 24, no. 7 (2024): 2378. http://dx.doi.org/10.3390/s24072378.

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In this paper, we propose and demonstrate a network analysis optical frequency domain reflectometer (NA-OFDR) for distributed temperature measurements at high spatial (down to ≈3 cm) and temperature resolution. The system makes use of a frequency-stepped, continuous-wave (cw) laser whose output light is modulated using a vector network analyzer. The latter is also used to demodulate the amplitude of the beat signal formed by coherently mixing the Rayleigh backscattered light with a local oscillator. The system is capable of attaining high measurand resolution (≈50 mK at 3-cm spatial resolution
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Volanthen, M., H. Geiger, and J. P. Dakin. "Distributed grating sensors using low-coherence reflectometry." Journal of Lightwave Technology 15, no. 11 (1997): 2076–82. http://dx.doi.org/10.1109/50.641525.

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Dominauskas, Aurimas, Dirk Heider, and John W. Gillespie. "Electric time-domain reflectometry distributed flow sensor." Composites Part A: Applied Science and Manufacturing 38, no. 1 (2007): 138–46. http://dx.doi.org/10.1016/j.compositesa.2006.01.019.

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Bao, Xiaoyi, and Yuan Wang. "Recent Advancements in Rayleigh Scattering-Based Distributed Fiber Sensors." Advanced Devices & Instrumentation 2021 (March 11, 2021): 1–17. http://dx.doi.org/10.34133/2021/8696571.

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Recently, Rayleigh scattering-based distributed fiber sensors have been widely used for measurement of static and dynamic phenomena such as temperature change, dynamic strain, and sound waves. In this review paper, several sensing systems including traditional Rayleigh optical time domain reflectometry (OTDR), Φ-OTDR, chirped pulse Φ-OTDR, and optical frequency domain reflectometry (OFDR) are introduced for their working principles and recent progress with different instrumentations for various applications. Beyond the sensing technology and instrumentation, we also discuss new types of fiber
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Rahman, Saifur, Farman Ali, Fazal Muhammad, et al. "Analyzing Distributed Vibrating Sensing Technologies in Optical Meshes." Micromachines 13, no. 1 (2022): 85. http://dx.doi.org/10.3390/mi13010085.

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Hundreds of kilometers of optical fibers are installed for optical meshes (OMs) to transmit data over long distances. The visualization of these deployed optical fibers is a highlighted issue because the conventional procedure can only measure the optical losses. Thus, this paper presents distributed vibration sensing (DVS) estimation mechanisms to visualize the optical fiber behavior installed for OMs which is not possible by conventional measurements. The proposed technique will detect the power of light inside the optical fiber, as well as different physical parameters such as the phase of
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Kiyozumi, Takaki, Tomoya Miyamae, Kohei Noda, Heeyoung Lee, Kentaro Nakamura, and Yosuke Mizuno. "Super-simplified optical correlation-domain reflectometry." Japanese Journal of Applied Physics 61, no. 7 (2022): 078005. http://dx.doi.org/10.35848/1347-4065/ac7272.

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Abstract Optical correlation-domain reflectometry (OCDR), which is known as one of the fiber-optic techniques for distributed reflectivity sensing, conventionally included an acousto-optic modulator, a reference path, and erbium-doped fiber amplifiers in its setup. In this work, by removing all of these components simultaneously, we develop a super-simplified configuration of OCDR, which consists of a light source and a photodetector only. We experimentally show that this system can still perform distributed reflectivity sensing with a moderate signal-to-noise ratio, which will boost the porta
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Fan, Xinyu, Bin Wang, Guangyao Yang, and Zuyuan He. "Slope-Assisted Brillouin-Based Distributed Fiber-Optic Sensing Techniques." Advanced Devices & Instrumentation 2021 (July 14, 2021): 1–16. http://dx.doi.org/10.34133/2021/9756875.

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Brillouin-based fiber-optic sensing has been regarded as a powerful distributed measurement tool for monitoring the conditions of modern large civil and geotechnical structures, since it provides continuous environmental information (e.g., temperature and strain) along the whole fiber used for sensing applications. In the past few decades, great research efforts were devoted to improve its performance in terms of measurement range, spatial resolution, measurement speed, sensitivity, and cost-effectiveness, of which the slope-assisted measurement scheme, achieved by exploiting the linear slope
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SAM, A. ROBERT, G. PUNITHAVATHY, and G. S. AYYAPPAN. "Distributed Acoustic Sensing Signal Model Under Static Fiber Conditions." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 08 (2024): 1–6. http://dx.doi.org/10.55041/ijsrem36976.

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This paper presents a statistical model for distributed acoustic sensor interrogation units that utilizes laser pulses transmitted into fiber optics. Interactions within the fiber lead to localized acoustic energy, resulting in backscatter, which is a reflection of the light. Explicit equations were used to calculate the amplitudes and phases of backscattered signals. The proposed model accurately predicts the amplitude signal spectrum and autocorrelation, aligning well with experimental observations. This study also explores the phase signal characteristics relevant to optical time-domain ref
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Dissertations / Theses on the topic "Distributed reflectometry"

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Luo, Linqing. "Time-frequency localisation of distributed Brillouin Optical Time Domain Reflectometry." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/274568.

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Distributed fibre optic sensing (DFOS) is essential for structural health monitoring (SHM) of strain changes induced during the lifetime of a structure. Among different DFOS systems, the Brillouin Optical Time Domain Reflectometry (BOTDR) takes the advantages of obtaining full frequency spectrum to provide strain and temperature information along the optic fibre. The key parameters of distributed fibre optic sensors, spatial and frequency resolution, are strongly linked with the time-frequency (T-F) localisation in the system in three parts: pulse, hardware design and optical fibre. T-F locali
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Wu, Nan. "Optical Frequency Domain Reflectometry Based Quasi-distributed High Temperature Sensor." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/76905.

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Temperature sensing in harsh environment is desired in many areas, such as coal gasification, aerospace, etc. Single crystal sapphire is an excellent candidate for construction of harsh environment sensors due to its superior mechanical and optical properties even at temperature beyond 1600°C. The temperature inside a coal gasifier can be as high as 1200°C. And there is dramatic temperature gradient between the inner and outer layers of the gasifier refractory. Previous work has been done at Virginia Tech's Center for Photonics Technology to design and fabricate a sapphire wafer based Fabry-Pe
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Ek, Simon. "Distributed Temperature Sensing Using Phase-Sensitive Optical Time Domain Reflectometry." Thesis, KTH, Tillämpad fysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-285902.

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This thesis explores and evaluates the temperature measuring capabilities of a phase-sensitive optical time-domain reflectometer (φ-OTDR), which exploits Rayleigh backscattering in normal single mode optical fibers. The device is constructed and its setup explained, and a protocol for making temperature measurements with it is developed. Performance tests are made and the device is shown to achieve fully distributed temperature measurements on fibers hundreds of meters in length with a spatial resolution of 1 m and a temperature resolution of 0.1 K. In addition, the capabilities of the device
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Saunders, Charles T. W. "Optical fibre sensing by time domain reflectometry." Thesis, University of Manchester, 2006. https://www.research.manchester.ac.uk/portal/en/theses/distributed-optical-fibre-sensing(f1857f29-5af2-4e94-97dd-164f3d67f29b).html.

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This thesis considers cost effective optical time domain rcflectometry for distributed fibre sensors, using new developments in light sources, detectors, fibres and computational power, suitable to interrogate distributed fibre sensors from 20m to 10km, within a £5,000 hardware budget. The characteristics of 200μm core diameter polymer clad silica (PCS) fibre and 980μm core diameter PMMA POF (polymethyl methacrylate plastic optical fibre) were theoretically evaluated including damage thresholds, optimum sensitisation (evanescent field attenuation and micro-bending) and launch conditions for op
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Stastny, Jeffrey Allen. "Time domain reflectometry (TDR) techniques for the design of distributed sensors." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09122009-040407/.

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Ren, Meiqi. "Distributed Optical Fiber Vibration Sensor Based on Phase-Sensitive Optical Time Domain Reflectometry." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34400.

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In this thesis, the work focuses on developing distributed optical fiber vibration sensors based on phase-sensitive optical time domain reflectometry (Φ-OTDR). Three works have been accomplished to improve the performances of Φ-OTDR for distributed vibration sensing. Firstly, Φ-OTDR based on a polarization diversity scheme is demonstrated to mitigate the polarization mismatch effect occurring in traditional systems. A theoretical analysis is performed in different polarization cases corresponding to coherent and polarization diversity detection. Φ-OTDR based polarization diversity shows a grea
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Bolen, Ryan. "A study of optical frequency domain reflectometry and its associated distributed sensor applications." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28464.

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Optical Frequency Domain Reflectometry (OFDR) is an interferometric technique which is capable of interrogating fibers under test (FUT) up to kilometers in length with millimeter resolution[10]. It does so by taking the Rayleigh backscattered light, or Fresnel back-reflected light and combining it with the reference arm to create a beating signal. The beating signal is then Fourier transformed to create a scattering profile of the FUT. Presented in this thesis are 5 novel OFDR configurations that improve the SNR in the spatial domain up to 26dB. As well, 4 new data analysis algorithms are pres
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Rizzolo, Serena. "Advantages and limitations of distributed optical-frequency-domain-reflectometry for optical fiber-based sensors in harsh environments." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSES013.

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L’accident de Fukushima-Daiichi du 11 Mars 2011 a fortement marqué l'industrie nucléaire en mettant en évidence plusieurs faiblesses dans le contrôle des systèmes critiques qui assurent la sécurité des centrales nucléaires, en particulier, lors de conditions accidentelles. Cette thèse a été réalisée en collaboration avec AREVA, groupe industriel français actif dans le domaine de l'énergie, avec l’objectif de réaliser des capteurs à fibres optiques résistants aux contraintes sévères d'une centrale nucléaire et, en particulier, de surveiller la température et le niveau de l'eau à l'intérieur d’u
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Randall, Summer Lockerbie. "Development and utilization of optical low coherence reflectometry for the study of multiple scattering in randomly distributed solid-liquid suspensions /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/8672.

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Bergdoll, Greg M. "Characterization of two Vernier-Tuned Distributed Bragg Reflector (VT-DBR) Lasers used in Swept Source Optical Coherence Tomography (SS-OCT)." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1461.

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Insight Photonic Solutions Inc. has continued to develop their patented VT-DBR laser design; these wavelength tunable lasers promise marked image-quality and acquisition time improvements in SS-OCT applications. To be well suited for SS-OCT, tunable lasers must be capable of producing a highly linear wavelength sweep across a tuning range well-matched to the medium being imaged; many different tunable lasers used in SS-OCT are compared to identify the optimal solution. This work electrically and spectrally characterizes two completely new all-semiconductor VT-DBR designs to compare, as well. T
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Book chapters on the topic "Distributed reflectometry"

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Zahoor, Rizwan, Raffaele Vallifuoco, Ester Catalano, Luigi Zeni, and Aldo Minardo. "Distributed Temperature Measurements Using Network Analysis Frequency-Domain Reflectometry." In Lecture Notes in Electrical Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-82076-2_33.

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Pradhan, Himansu Shekhar, P. K. Sahu, D. Ghosh, and S. Mahapatra. "Brillouin Distributed Temperature Sensor Using Optical Time Domain Reflectometry Techniques." In Smart Sensors, Measurement and Instrumentation. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42625-9_10.

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Sallem, Soumaya, Ousama Osman, Laurent Sommervogel, et al. "Wired Network Distributed Diagnosis and Sensors Communications by Multi-carrier Time Domain Reflectometry." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01057-7_77.

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"Principles of Optical Time-Domain Reflectometry (OTDR) for Distributed Sensing." In An Introduction to Distributed Optical Fibre Sensors. CRC Press, 2017. http://dx.doi.org/10.1201/9781315119014-4.

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Ben Hassen, Wafa. "Diagnosis and Monitoring of Electrical Wiring and Interconnection Systems." In Aircraft Manufacturing, Safety and Control [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1010959.

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The continued operation of aircraft beyond their initially intended service life, combined with the increasing electrification of onboard systems, has intensified the need for reliable diagnosis and monitoring of electrical wiring interconnection systems (EWIS). The latter usually operates in harsh environments, exposed to mechanical, thermal, and electromagnetic stresses that can lead to faults such as insulation damage, conductor breaks, and connector failures. Moreover, since the EWIS is often embedded within the aircraft structure, it presents significant challenges for fault detection and localization, yet failures can have catastrophic consequences. In this context, the early diagnosis and monitoring of transient faults (i.e., arcing) and soft faults becomes mandatory to enable predictive maintenance strategies aimed at enhancing operational safety and reducing unscheduled downtimes and costs. Reflectometry has emerged as a non-intrusive and cost-efficient technique, enabling fault detection and localization through the analysis of signal reflections caused by impedance discontinuities. Advanced variants based on spread spectrum and multi-carrier reflectometry have been developed for real-time monitoring. However, realistic operating conditions impose limitations related to signal attenuation, distortion, and complex topologies. This chapter proposes to study reflectometry-based strategies to overcome challenges imposed by the aircraft environment, such as embedded and distributed diagnostic approaches. These strategies, leveraging multiple sensor nodes and real-time data fusion, represent a key enabling technology for next-generation intelligent EWIS health monitoring systems in safety-critical aerospace environments.
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Shishkin, Victor, Kenji Tanaka, and Hideaki Murayama. "Proposal on Miniaturization of Distributed Sensing System Based on Optical Frequency Domain Reflectometry." In Advances in Transdisciplinary Engineering. IOS Press, 2019. http://dx.doi.org/10.3233/atde190103.

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The main goal of our research is to develop an integrated photonics circuit for sensing system based on Optical Frequency Domain Reflectometry in order to reduce size, weight and cost of current system. In this work we designed, simulated and fabricated Michelson interferometer integrating components such as adiabatic splitter, loop back mirrors, grating couplers and waveguides on total area 150x410 μm of silicon-on-insulator chip. According to simulation results free spectral range of the interferometer is 0.55 nm. Manufacturing variability was taken into account by performing corner analysis.
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Klar Assaf, Uchida Shun, and Levenberg Eyal. "In Situ and Laboratory Mechanical Characterization Using High-Resolution Fiber Optic Distributed Sensing." In Advances in Soil Mechanics and Geotechnical Engineering. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-601-9-382.

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This paper explores the potential use of high-resolution fiber optic distributed sensing technology for in situ moduli profiling and in laboratory element testing. In recent times, strain measurement using fiber optics has been employed in innovative civil engineering applications such as in the health monitoring of ageing infrastructures. Through recent developments, in particular Rayleigh backscatter optical frequency domain reflectometry technique, the fiber optic sensing technology is nowadays capable of providing continuous distributed strain measurement with a higher spatial resolution of the order of millimeters. As a result, the technology can potentially serve as a viable alternative to conventional strain gauges (i.e. high-spatial resolution yet localized measurement devices) or seismic geophysical measurement (i.e. distributed yet low-spatial resolution). This paper provides two examples of its applicability to both in situ and laboratory mechanical characterization.
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Mohamad H., Soga K., and Bennett P.J. "Fibre optic installation techniques for pile instrumentation." In Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering. IOS Press, 2009. https://doi.org/10.3233/978-1-60750-031-5-1873.

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An innovative technique based on optical fibre sensing that allows continuous strain measurement has recently been introduced in structural health monitoring. Known as Brillouin Optical Time-Domain Reflectometry (BOTDR), this distributed optical fibre sensing technique allows measurement of strain along the full length (up to 10km) of a suitably installed optical fibre. Examples of recent implementations of BOTDR fibre optic sensing in piles are described in this paper. Two examples of distributed optical fibre sensing in piles are demonstrated using different installation techniques. In a load bearing pile, optical cables were attached along the reinforcing bars by equally spaced spot gluing to measure the axial response of pile to ground excavation induced heave and construction loading. Measurement of flexural behaviour of piles is demonstrated in the instrumentation of a secant piled wall where optical fibres were embedded in the concrete by simple endpoint clamping. Both methods have been verified via laboratory works.
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"Distributed strain measurement in steel slab-on-girder bridge via Brillouin optical time domain reflectometry." In Advances in Bridge Maintenance, Safety Management, and Life-Cycle Performance, Set of Book & CD-ROM. CRC Press, 2015. http://dx.doi.org/10.1201/b18175-367.

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Conference papers on the topic "Distributed reflectometry"

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Ravot, N., F. Auzanneau, M. Olivas, Y. Bonhomme, and F. Bouillault. "Distributed Reflectometry-Based Diagnosis for Complex Wired Networks." In 2007 International Symposium on Electromagnetic Compatibility - EMC Europe. IEEE, 2007. https://doi.org/10.23919/emceurope.2007.10876708.

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Chin, Sanghoon, Mohammed Srout, Jannis Holzer, Séverine Denis, Andrea Ingenito, and Yves Stauffer. "Optical Frequency-Domain Reflectometry for Distributed Thermal Monitoring inside Lithium-Ion Pouch Cell." In Optical Sensors. Optica Publishing Group, 2024. https://doi.org/10.1364/sensors.2024.sf4c.6.

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We have successfully integrated a strand of optical fiber inside a lithium-ion pouch cell as optical sensor. Then, an optical frequency-domain reflectometer is connected to the sensing fiber for distributed temperature monitoring inside the battery.
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Tongue, Alex. "Fiber-Based Sensing Using Optical Frequency Domain Reflectometry (OFDR) and Distributed Bragg Gratings." In Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides. Optica Publishing Group, 2024. https://doi.org/10.1364/bgpp.2024.bw2a.4.

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Liu, Chaozhu, Xinyu Fan, and Zuyuan He. "Quasi-distributed ultrasonic sensing scheme based on crosstalk suppressed optical coherence domain reflectometry." In 29th International Conference on Optical Fiber Sensors, edited by Manuel Lopez-Amo Sainz, José Luís Santos, and Tong Sun. SPIE, 2025. https://doi.org/10.1117/12.3062075.

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Yan, Ruoqian, Weilin Xie, Qiang Yang, et al. "Measurement of frequency interval stability for dual-frequency phase-sensitive optical frequency-domain reflectometry." In First Conference on Distributed Optical Fiber Sensing Technology and Applications (DOFS 2024), edited by Xuping Zhang. SPIE, 2025. https://doi.org/10.1117/12.3059375.

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Zhang, Zhaopeng, Wei Peng, Lingmei Ma, and Chen Zhu. "Breaking the trade-off between spatial resolution and sensing resolution in optical frequency domain reflectometry-based distributed sensing." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jtu2a.109.

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Empowered by a data and physics-driven neural network, an OFDR-based high-performance distributed sensor is experimentally validated with sub-millimeter spatial resolution and sub-µε sensing resolution over a long sensing range of 140 m.
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Tan, Kaiyue, Weilin Xie, Xiang Zheng, et al. "Analysis and comparison of demodulation methods for distributed fiber-optic sensing based on optical frequency-domain reflectometry." In First Conference on Distributed Optical Fiber Sensing Technology and Applications (DOFS 2024), edited by Xuping Zhang. SPIE, 2025. https://doi.org/10.1117/12.3059310.

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Zhu, Yidai, Yangyang wan, Sizhe Zhang, Xinyu Fan, and Zuyuan He. "Distributed magnetic sensing with high precision and long distance using polarization-sensitive optical frequency domain reflectometry." In 29th International Conference on Optical Fiber Sensors, edited by Manuel Lopez-Amo Sainz, José Luís Santos, and Tong Sun. SPIE, 2025. https://doi.org/10.1117/12.3062149.

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Yoon, Myung-Keun, Daniel F. Dolan, and Steve Gabriel. "Time domain reflectometry as a distributed strain sensor." In The 15th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, edited by Masayoshi Tomizuka. SPIE, 2008. http://dx.doi.org/10.1117/12.776224.

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Kreger, Stephen T., Emily Templeton, Daniel Kominsky, and Brian Templeton. "Distributed polarization state sensing with optical frequency domain reflectometry." In Fiber Optic Sensors and Applications XVI, edited by Glen A. Sanders, Robert A. Lieberman, and Ingrid U. Scheel. SPIE, 2019. http://dx.doi.org/10.1117/12.2519184.

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