Long-distance remote simultaneous measurement of strain and temperature based on a Raman fiber laser with a single FBG embedded in a quartz plate
|
|
- Clyde Leonard
- 6 years ago
- Views:
Transcription
1 Long-distance remote simultaneous measurement of strain and temperature based on a Raman fiber laser with a single FBG embedded in a quartz plate Young-Geun Han, Thi Van Anh Tran, Ju Han Lee, and Sang Bae Lee Photonics Research Center, Korea Institute of Science and Technology 39-1 Hawolgok-dong, Seongbuk-gu, Seoul , Korea yyghan@kist.re.kr ABSTRACT We propose and experimentally demonstrate long-distance, simultaneous measurement of strain and temperature based on a Raman fiber laser with a single FBG embedded on a quartz plate. Most of all, FBG based sensing technology has attracted considerable attention in the field of optical sensors since FBG based sensing probe can provide the most simple and attractive methods to monitor the external perturbation change like temperature, strain, and pressure due to its high sensitivity, electro-magnetic immunity, compactness, and ease of fabrication. In order to enhance the measurement resolution of sensing systems, fiber lasers based sensor schemes with narrow bandwidth and high extinction ratio have been considered as promising technologies. A novel and practical Raman laser based long-distance sensing scheme for simultaneous measurement of strain and temperature using FBGs is investigated. High-quality Raman laser output with a high extinction ratio of more than 50 db is obtained at a long distance of over 50 km. Lasing wavelength shift and separation occur as the temperature and strain increase, respectively. To induce these phenomena, half of the FBG is fixed steadily on the quartz plate to respond to temperature only, while the other half of the FBG is free to respond to both temperature and strain. The temperature and strain sensitivities are measured to be 8.96 pm/ 0 C and 1.47 pm/µε, respectively. This allows simultaneous measurement of strain and temperature for long-distance sensing applications of more than 50 km. Keywords: Raman fiber laser, strain and temperature sensor, long distance sensor 1. INTRODUCTION Fiber gratings have been emerged as a promising technology in the field of fiber optic sensors due to due to their versatile advantages such as their high sensitivity, electro-magnetic immunity, compactness, and ease of fabrication [1-3]. Fiber gratings based sensing probes can provide the most simple and attractive methods to monitor the external perturbation change like temperature, strain, and pressure [1-3]. However, they still have some limitations like the concurrent sensitivities to both stain and temperature. In order to resolve this problem, many techniques have been proposed, including reference fiber Bragg gratings (FBGs) method [2], specialty long-period fiber gratings (LPFGs) [3], and combined FBG and LPFG [4], and so on. These techniques require a broadband light source for a sensing signal. In fact, the distance of transmission signal in the conventional sensing system with broadband source is limited to 25 km due to Rayleigh scattering, which induces an optical noise and degrades the quality of the transmission signal in the fibre [5-6]. In order to increase the distance and enhance the performance of fiber grating sensor system, several methods have been proposed [6]. A passive FBG sensing scheme based on distributed Raman amplification with the transmission fiber has been proposed in order to enhance the sensor performance for long-distance remote sensing applications [5]. However, it has drawbacks since it still requires a broadband light source as an input signal. Passive Components and Fiber-based Devices III, edited by Sang Bae Lee, Yan Sun, Kun Qiu, Simon C. Fleming, Ian H. White, Proc. of SPIE Vol. 6351, , (2006) X/06/$15 doi: / Proc. of SPIE Vol
2 In order to enhance the measurement resolution of sensing systems, active fiber laser based sensing schemes with narrow bandwidth and high extinction ratio have been proposed [6]. However, it is not easy to discriminate two sensitivities between strain and temperature even if the previously proposed Raman laser configuration effectively removes the requirement of an additional broadband light source and significantly improves the sensing signal quality. In this paper, we proposed and experimentally demonstrate long-distance, simultaneous measurement of stain and temperature based on a Raman fiber laser with a single fiber Bragg grating embedded on the quartz plate. The high quality Raman laser output with high extinction ratio more than 50 db is obtained at the long distance over 50 km. The lasing wavelength shift and separation occur as the temperature and strain increase, respectively. To induce these phenomena, the half of the FBG is fixed steadily on the quartz plate in order to respond to temperature only, whilst the other half of the FBG are settled freely to respond to both temperature and strain. The temperature and strain sensitivity are measured to be 8.96 pm/ 0 C and 1.47 pm/µε, respectively. This allows simultaneous measurement of strain and temperature for long-distance sensing applications more than 50 km. 2. LONG DISTANCE SIMULTANEOUS MEASUREMENT OF STRAIN AND TEMPERATURE BASED ON A RAMAN FIBER LASER Figure 1. The schematic diagram of all fiber Raman laser based on FBGs for a long distance remote sensing system. The experimental scheme of the proposed fiber Raman laser based FBG sensor system is shown in Fig. 1. The fiber Raman laser consists of a tunable chirp FBG (TCFBG) acting as a cavity mirror, a 50-km long standard single mode fiber (SMF) acting as Raman gain medium and a single FBG embedded in the quartz plate acting operating as a cavity mirror and a sensing head. As shown in Fig. 1, the half of the uniform FBG was Proc. of SPIE Vol
3 embedded in the quarts plate to respond to temperature only. The quartz plate has a dimension of 1 cm length, 3 cm width, and 1 mm height. The half-length was firmly attached on the quartz plate by using epoxy glue in the one end and middle point of the FBG. In the bonding process, the great care was taken due to the deformation of the grating period in the fiber. The rest part of the grating was free to respond to both temperature and strain. Consequently, the uniform FBG has two segments to response to temperature and strain differently. Since two sections have the same temperature sensitivity, the resonant peak shift occurs as the temperature increases. However, the peak separation can be induced by the strain change due to their different the different strain dependence. This can directly affect the Raman fiber laser output. The FBG was fabricated by exposing the photosensitivity fiber to KrF excimer laser through the phase mask. The grating length was 2 cm and the Bragg wavelength was nm at room temperature. To generate the Raman laser, the proposed sensor head was connected to one end of 50-km long standard SMF and the TCFBG with the broad bandwidth more than ~5 nm was connected in the other end to build Raman fiber laser cavity. The Raman pump for this laser consists of four laser diodes operating at the wavelength of 1425, 1435, 1455, 1465 nm respectively. These laser diodes are multiplexed and launched in the laser cavity by uisng an passive 14XX WDM coupler. A total pump power and Raman gain were up to 1 W and 15 db, respectively. This level of Raman gain can compensate total loss in the cavity and generate the lasing signal. The lasing wavelength is determined by FBG sensing head. Since we utilized a single uniform FBG and a TCFBG, we achieved a single lasing Raman laser output with high extinction ratio more than ~50 db as shown in Fig. 2. After generating a single Raman laser output based on a single uniform FBG, we measured the temperature and strain sensitivity. 10 <0.15 nm 0 Output power [dbm] > 50dB Figure 2. Output spectrum of the Raman fiber laser with high extinction ratio more than 50 db. Proc. of SPIE Vol
4 (a) 0 Temperature 0 to 90 0 C Output power [dbm] (b) Temperature [ 0 C] Figure 3. (a) Output spectra of the Raman laser with the temperature change. (b) The shift of the Raman lasing wavelength as a function of the applied temperature (8.75 pm/ o C). Proc. of SPIE Vol
5 Fig. 3(a) shows the Raman laser output spectra with the temperature change in the range from 30 to 90 o C. Since two segments in the uniform grating have the same temperature sensitivity, the Raman lasing wavelength shifted into the longer wavelength. Fig. 3(b) shows the lasing wavelength change of the Raman laser output as a function of the applied temperature. After fitting the measured data, temperature sensitivity of the lasing wavelength shift was estimated to be 8.75 pm/ o C. After stretching FBG sensor head using two translation stages, we examined the strain sensitivity of the proposed sensor system at room temperature (25 o C). Output power [A.U.] (10dB/div.) λ (a) 1 λ (b) Strain [µε] λ 1 λ 2 Wavelength separation ( λ) [nm] (c) Strain [µε] Figure 4. (a) Output spectra of the Raman laser output with the strain change, (b) Lasing wavelength shift with the applied strain change, and (c) The lasing wavelength separation as a function of the applied strain (1.47 pm/µε). Fig. 4(a) shows the output spectra of the Raman laser as the applied strain increases. Between two lasing wavelength, one (λ 1 ) corresponding to the fixed section of the FBG into the quartz plate was the same with the pristine lasing wavelength of the Raman lasing output as the applied strain increased. However, when the strain was applied, the new lasing wavelength (λ 2 ) could be included and shifted into the longer wavelength since the rest section of the FBG without the quarts plate was readily affected by the strain. Accordingly, the lasing wavelength was separated by the applied strain due to the different strain sensitivity in two sections of the FBG head. Fig. 4(b) shows the Raman lasing wavelength changes corresponding to the two different segments of the FBG as a function of the applied strain. Fig. 4(c) shows the lasing wavelength separation with Proc. of SPIE Vol
6 the applied strain change. The strain sensitivity of the lasing wavelength separation ( λ=λ 2 λ 1 ) was estimated to be 1.47 pm/µε in the range from 0 to 1500 µε. Based on the shift and separation of the Raman lasing wavelength, it is possible to distinguish two sensitivities between temperature and strain, respectively at a long distance more than 50 km. 3. CONCLUSION In conclusion, we proposed and experimentally demonstrated the simple and practical, long-distance remote sensing scheme based on the Raman fiber laser for simultaneous measurement of strain and temperature at a long distance more than 50 km. The proposed Raman laser was composed of two FBGs for a laser cavity and a conventional single mode fiber with the length of 50 km. We achieved a single channel Raman laser output with high extinction ratio more than ~ 50 db. In the uniform FBG as a sensing head, its half segment was firmly embedded on the quartz plate to suppress the strain sensitivity and to respond to temperature only. The rest section was free to respond to both temperature and strain. Eventually, the Raman lasing wavelength was shifted or separated by the applied temperature or strain, respectively. The temperature sensitivity of the lasing wavelength shift was estimated to be 8.75 pm/ o C. The strain sensitivity of the lasing wavelength separation was measured to be 1.47 pm/µε. This allows simultaneous measurement of unambiguous strain and temperature at a long distance more than 50 km. 4. REFERENCES [1] A.D. Kersey, M. A. Davis, H. J. Patrick, M. LeBlank, K. P. Koo, C. G. Askins, M. A. Putnam, and E. J. Friebele, Fiber Grating sensors, J. Lightwave Technol., vol. 15, , [2] S. W. James, M. L. Dockney and R. P. Tatam, Simultaneous independent temperature and strain measurement using in-fiber Bragg grating sensors, Electron. Lett., vol. 32, pp , [3] Y. G. Han, S. B. Lee, C. S. Kim, Jin U. Kang, U. C. Paek, and Y. Chung, Simultaneous measurement of temperature and strain using dual long-period fiber gratings with controlled temperature and strain sensitivity, Opt. Express, vol. 11, pp , [4] Y. Nakajima, Y. Shindo, and T. Yoshikawa, Novel concept as long-distance transmission FBG sensor system using distributed Raman amplification, Proc. OFS-16, pp , [5] J. H. Lee, J. H. Kim, Y. G. Han, S. H. Kim, and S. B. Lee, Investigation of Raman fiber laser temperature probe based on fiber Bragg gratings for long distance remote sensing applications, Opt. Express, vol. 12, pp , [6] Y. G. Han, T. V. A. Tran, S. H. Kim, and S. B. Lee, Development of multiwavelength Raman fiber laser based on phase-shifted fiber Bragg gratings for long-distance remote sensing applications, Opt. Lett., vol. 30, pp , Proc. of SPIE Vol
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,900 116,000 120M Open access books available International authors and editors Downloads Our
More informationHybrid fibre optic sensor network for real-time high temperature performance monitoring of steel structures
American Journal of Civil Engineering 2013; 1(1): 16-23 Published online June 20, 2013 (http://www.sciencepublishinggroup.com/j/ajce) doi: 10.11648/j.ajce.20130101.13 Hybrid fibre optic sensor network
More informationHealth Monitoring System Using FBG-Based Sensors for a 12-Story Building with Column Dampers.
8 th SPIE International Symposium of Smart Structures and Materials, Newport Beach, USA, 4-8/Mar., 001 Health Monitoring System Using FBG-Based Sensors for a 1-Story Building with Column Dampers. Hideaki
More informationHigh-resolution Photon Counting-OTDR Based Interrogation of Multiplexing Broadband FBG Sensors
High-resolution Photon Counting-OTDR Based Interrogation of Multiplexing Broadband FBG Sensors Po Zhang Dissertation submitted to the Faculty of the Virginia Polytechnic Institute and State University
More informationLong-Range Displacement Sensor Based on SMS Fiber Structure and OTDR
PHOTONIC SENSORS / Vol. 5, No. 2, 2015: 166 171 Long-Range Displacement Sensor Based on SMS Fiber Structure and OTDR A. ARIFIN 1,3*, A. M. HATTA 2,4, SEKARTEDJO 2, M. S. MUNTINI 1, and A. RUBIYANTO 1 1
More informationIntegrated optical fiber shape senor modules based on twisted multicore fiber grating arrays
Integrated optical fiber shape senor modules based on twisted multicore fiber grating arrays P. S. Westbrook, K.S. Feder, T. Kremp, T. F. Taunay, E. Monberg, J. Kelliher*, R. Ortiz, K. Bradley +, K. S.
More informationRecent Progress in Lightwave Sensing Technology
Recent Progress in Lightwave Sensing Technology Daiichiro Tanaka 1 Fiber-optic sensing is the important element of the lightwave sensing technology. Since the fibers also work as sensors various measurement
More informationPerformance of a Distributed Simultaneous Strain and Temperature Sensor Based on a Fabry-Perot Laser Diode and a Dual-Stage FBG Optical Demultiplexer
Sensors 2013, 13, 15452-15464; doi:10.3390/s131115452 Article OPEN ACCESS sensors ISSN 1424-8220 www.mdpi.com/journal/sensors Performance of a Distributed Simultaneous Strain and Temperature Sensor Based
More informationOptical fiber Bragg grating based intrusion detection systems for homeland security
Edith Cowan University Research Online ECU Publications 2013 2013 Optical fiber Bragg grating based intrusion detection systems for homeland security Gary Allwood Edith Cowan University Steven Hinckley
More informationHigh Spatial Resolution Distributed Fiber Optic Technique for Strain and Temperature Measurements in Concrete Structures
International Workshop on SMART MATERIALS, STRUCTURES NDT in Canada 2013Conference & NDT for the Energy Industry October 7-10, 2013 Calgary, Alberta, CANADA High Spatial Resolution Distributed Fiber Optic
More informationLuna Technologies Webinar Series. New Rayleigh-Based Technique for Very High Resolution Distributed Temperature and Strain Sensing
Luna Technologies Webinar Series New Rayleigh-Based Technique for Very High Resolution Distributed Temperature and Strain Sensing Dr. Dawn Gifford Senior Optical Engineer Mr. Ed Valigursky VP of Sales
More informationCorrelation-based OTDR for in-service monitoring of 64-split TDM PON
Correlation-based OTDR for in-service monitoring of 64-split TDM PON H. K. Shim, K. Y. Cho, Y. Takushima, and Y. C. Chung* Department of Electrical Engineering, Korea Advanced Institute of Science and
More informationTatsuya Yamaguchi, Hiroshi Ohno, Yu Matsumoto, Taiyo Matsumura, Yukitaka Shinoda, Takashi Ono Nihon University, Tokyo, Japan
Basic Study on Position Estimation of Fire Source using Fiber Bragg Gratings Tatsuya Yamaguchi, Hiroshi Ohno, Yu Matsumoto, Taiyo Matsumura, Yukitaka Shinoda, Takashi Ono Nihon University, Tokyo, Japan
More informationOmnisens DITEST TM FIBER OPTIC DISTRIBUTED TEMPERATURE & STRAIN SENSING TECHNIQUE
1 Omnisens DITEST TM FIBER OPTIC DISTRIBUTED TEMPERATURE & STRAIN SENSING TECHNIQUE Introduction Omnisens DITEST (Distributed Temperature and Strain sensing) is a distributed temperature and/or strain
More informationA Fresnel Reflection-Based Optical Fiber Sensor System for Remote Refractive Index Measurement Using an OTDR
PHOTONIC SENSORS / Vol. 4, No. 1, 2014: 48 52 A Fresnel Reflection-Based Optical Fiber Sensor System for Remote Refractive Index Measurement Using an OTDR Jianying YUAN, Chunliu ZHAO *, Manping YE, Juan
More informationTemperature characterisation of LPG sensors for monitoring deterioration in reinforced concrete
Temperature characterisation of LPG sensors for monitoring deterioration in reinforced concrete O'FLAHERTY, Fin , GHASSEMLOOY, Zabih, MANGAT, Pal
More informationCompact Raman spectrometer system for low frequency spectroscopy
Optical Density Compact Raman spectrometer system for low frequency spectroscopy Christophe Moser, Frank Havermeyer Ondax, Inc., 8 E. Duarte Road, Monrovia, CA, USA 96 ABSTRACT We report low frequency
More informationDevelopment of optical fiber sensors for selected chemical and physical sensing applications
Preface The modern age of fiber optic sensors is enabled by the development of extremely low-loss optical fibers in late 1970s. In recent years Fiber optic sensors have developed from the research laboratory
More informationOPTICAL TIME DOMAIN REFLECTOMETRY (OTDR) Dr. BC Choudhary Professor, NITTTR, Chandigarh
OPTICAL TIME DOMAIN REFLECTOMETRY (OTDR) Dr. BC Choudhary Professor, NITTTR, Chandigarh WHAT IS AN OTDR? A measurement technique which provides the loss characteristics of an optical link down its entire
More informationDistributed Sensing Over Meter Lengths Using Twisted Multicore Optical Fiber with Continuous Bragg Gratings
Special Issue R&D Group and Global Expansion Distributed Sensing Over Meter Lengths Using Twisted Multicore Optical Fiber with Continuous Bragg Gratings P. S. Westbrook *1, K.S. Feder *1, T. Kremp *1,
More informationWHITE PAPER FIBER OPTIC SENSING. Summary. Index. Introduction. About Fischer Connectors
Summary This white paper presents the technical basics behind sensing over fiber technologies, its main applications and the cabling solutions involved. Index By: Jacques Miéville, Project Manager, Fischer
More informationContents Fibre Laser (and Sensor) Technologies
Contents Fibre Laser (and Sensor) Technologies Lorinda Wu CSIR National Laser Centre NLC: Novel Laser Sources Group Conducts R&D into novel laser sources, with a focus on mid-ir. Developed a number of
More informationLow-Frequency Raman Spectroscopy Enabling Affordable Access to the Terahertz Regime
Low-Frequency Raman Spectroscopy Enabling Affordable Access to the Terahertz Regime James Carriere and Frank Havermeyer Ondax, Inc: Booth #48 SCIX/FACSS: 10/3/2012 Paper 532 Motivation Low-frequency Raman
More informationComputerised Analysis of OFM in Communication Theory
Computerised Analysis of OFM in Communication Theory Asad Ali Khan Research Scholar, Teerthanker Mahaveer University Moradabad, Uttar Pradesh, India V.K. Sharma Ex-Principal K.G.K (P.G.) College,Moradabad,
More informationReinforced FBG Sensors Serve Demanding Applications
Reinforced FBG Sensors Serve Demanding Applications Kevin Hsu, Andrei Csipkes, and Tommy Jin Technica Optical Components / 3657 Peachtree Rd, Suite 10A, Atlanta, 30319, USA, info@technicasa.com, www.technicasa.com
More informationNew optical frequency domain differential mode delay measurement method for a multimode optical fiber
New optical frequency domain differential mode delay measurement method for a multimode optical fiber T.-J. Ahn, S. Moon, Y. Youk, Y. Jung, K. Oh, and D.Y. Kim Department of Information and Communications,
More informationDistributed Rayleigh scatter dynamic strain sensing above the scan rate with optical frequency domain reflectometry
Distributed Rayleigh scatter dynamic strain sensing above the scan rate with optical frequency domain reflectometry Stephen T. Kreger 1, Justin W. Klein 1, Nur Aida Abdul Rahim 1, and Joseph J. Bos 2 1
More informationMultitel develops components and full instruments for in-vitro and in-vivo diagnostics in the biomedical, food and drug sectors.
Biophotonics Multitel develops components and full instruments for in-vitro and in-vivo diagnostics in the biomedical, food and drug sectors. Bio-sensors design Multitel participates to a large panel of
More informationPUMP AND SIGNAL COMBINERS
Pump and Signal Combiners For Fiber Laser and Amplifier Design A Furukawa Company www.ofsoptics.com PUMP AND SIGNAL COMBINERS for Fiber Laser and Amplifier Design Multimode Single-mode Polarization-Maintaining
More informationTABLE OF CONTENTS LISTING
UOPT #465509 VOL 4, ISS 1 ALL-SILICON CARBIDE HYBRID WIRELESS-WIRED OPTICS TEMPERATURE SENSOR NETWORK BASIC DESIGN ENGINEERING FOR POWER PLANT GAS TURBINES Nabeel A. Riza and Mumtaz Sheikh QUERY SHEET
More informationSmart design for temperature-strain measurement using distributed fiber-optic embedded in laminated composites
Smart design for temperature-strain measurement using distributed fiber-optic embedded in laminated composites More info about this article: http://www.ndt.net/?id=00 Pingyu ZHU 1, Xiaopeng SUN 1, Xiaobo
More informationJournal of Applied Science and Agriculture. Improve the Spatial resolution of distributed optical sensors by designing a new detection scheme
AENSI Journals Journal of Applied Science and Agriculture ISSN 1816-9112 Journal home page: www.aensiweb.com/jasa/index.html Improve the Spatial resolution of distributed optical sensors by designing a
More informationOFDR-Temperature Sensing using Existing Fiber-Optic Communication Cables An Application for Automatic Fire Detection?
OFDR-Temperature Sensing using Existing Fiber-Optic Communication Cables An Application for Automatic Fire Detection? Markus Brüne, Annika Gomell, Andreas Pflitsch Ruhr-Universität Bochum, Bochum, Germany
More informationIntroduction to Fiber Optic Sensing
Introduction to Fiber Optic Sensing A guide to understanding the fiber optic sensing landscape Introduction to Fiber Optic Sensing - 1 - Table of Contents Understanding the Fiber Optic Sensing Landscape...
More informationLeakage detection using fiber optics distributed temperature monitoring
Re-printed from the Proceedings of the 11th SPIE Annual International Symposium on Smart Structures and Materials, March 14-18, 2004, San Diego, California, USA, pp.18-25. Leakage detection using fiber
More informationClearlite Photonic Fibers
Clearlite Photonic Fibers Fiber Name Operating Wavelength MFD at Operating Wavelength Beat Length at Operating WL Clad/Coating Diameter Order by Part Number TruePhase 980 Micro TruePhase 980 400 TruePhase
More informationInterferometric optical time-domain reflectometry for distributed optical-fiber sensing
Interferometric optical time-domain reflectometry for distributed optical-fiber sensing Sergey V. Shatalin, Vladimir N. Treschikov, and Alan J. Rogers The technique of optical time-domain reflectometry
More informationDEGRADATION OF OPTICAL FillERS AT CARBON-CARBON PYROLYSIS. Rockwell International Science Center P.O. Box 1085 Thousand Oaks, CA 91358
DEGRADATION OF OPTICAL FillERS AT CARBON-CARBON PYROLYSIS TEMPERATURES Jeffrey S. Schoenwald Rockwell International Science Center P.O. Box 1085 Thousand Oaks, CA 91358 INTRODUCTION The value of having
More informationOptical Fiber Sensing Technology: Basics, Classifications and Applications
American Journal of Remote Sensing 2018; 6(1): 1-5 http://www.sciencepublishinggroup.com/j/ajrs doi: 10.11648/j.ajrs.20180601.11 ISSN: 2328-5788 (Print); ISSN: 2328-580X (Online) Review Article Optical
More informationProgrammable logic controller based Fibre Bragg Grating in-ground intrusion detection system
Edith Cowan University Research Online Australian Security and Intelligence Conference Conferences, Symposia and Campus Events 2011 Programmable logic controller based Fibre Bragg Grating in-ground intrusion
More informationHigh Sensitivity Explosives Detection using Dual-Excitation- Wavelength Resonance-Raman Detector
High Sensitivity Explosives Detection using Dual-Excitation- Wavelength Resonance-Raman Detector Balakishore Yellampalle *, William McCormick, Hai-Shan Wu, Mikhail Sluch, Robert Martin, Robert Ice and
More informationEXTENDING RAMAN INTO THE THz REGIME
Advanced Solutions for Optical Measurements EXTENDING RAMAN INTO THE THz REGIME DELIVERING BOTH CHEMICAL COMPOSITION AND STRUCTURAL INFORMATION IN A SINGLE MEASUREMENT Structural Fingerprint ± 5 cm -1
More informationDetection of Solvents using a Distributed Fibre Optic Sensor
Detection of Solvents using a Distributed Fibre Optic Sensor Alistair MacLean, Chris Moran, Walter Johnstone, Brian Culshaw, Dan Marsh, Paul Parker. A fibre optic sensor that is capable of distributed
More informationOPTICAL FIBER SOLUTIONS
RightWave Erbium-Doped Optical Fiber Critical component for the amplification of optical transmission signals A Furukawa Company Broad portfolio suited to diverse needs Proven product uniformity, quality
More informationExperiment Study in Optical Fiber Temperature Monitoring
Experiment Study in Optical Fiber Temperature Monitoring HE Jun, DONG Hui-juan, YANG Kan, ZHANG Guang-yu (School of Mechatronics Engineering, Harbin Institute of Technology, Harbin150001, China) Abstract:
More informationOil and Gas Pipeline Monitoring. Oil and Gas Well Monitoring. Power Line Monitoring. Highway Safety Monitoring
Features: 219 Westbrook Rd, Ottawa, ON, Canada, K0A 1L0 Toll Free: 1-800-361-5415 Tel:(613) 831-0981 Fax:(613) 836-5089 E-mail: sales@ozoptics.com FIBER OPTIC DISTRIBUTED STRAIN AND TEMPERATURE SENSORS
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,500 108,000 1.7 M Open access books available International authors and editors Downloads Our
More informationRAMAN SCATTERING AND OTDR BASED DISTRIBUTED SENSOR FOR TEMPERATURE MONITORING APPLICATIONS
RAMAN SCATTERING AND OTDR BASED DISTRIBUTED SENSOR FOR TEMPERATURE MONITORING APPLICATIONS Sait Eser KARLIK Uludağ University Faculty of Engineering and Architecture Department of Electronics Engineering
More informationFiberSystem. Fiber Optic Linear Heat Detection for Special Hazard Applications
FiberSystem 4000 Fiber Optic Linear Heat Detection for Special Hazard Applications The Protectowire Fiber Optic System In today s complex industrial environments, the potential for down time and financial
More informationFli'l HEWLETT. Measurement of Raylelgh Backscattering at 1.55 urn with a 32 um Spatial Resolution
Fli'l HEWLETT a:~ PACKARD Measurement of Raylelgh Backscattering at 1.55 urn with a 32 um Spatial Resolution W. V. Sorin, D. M. Baney Instruments and Photonics Laboratory HPL-91-180 December, 1991 Rayleigh
More informationOptical Frequency Domain Reflectometry: A Review
Optical Frequency Domain Reflectometry: A Review Kivilcim Yuksel, Marc Wuilpart, Véronique Moeyaert, and Patrice Mégret Faculté Polytechnique de Mons, Boulevard Dolez 31, 7000 Mons, Belgium kivilcim.yuksel@fpms.ac.be
More informationUC INSTRUMENTS GM8036 LASER SWEEP OPTICAL SPECTRUM ANALYZER (1525 ~ 1610 nm) Technical Specifications v1.01 March, 2011
UC INSTRUMENTS GM8036 LASER SWEEP OPTICAL SPECTRUM ANALYZER (1525 ~ 1610 nm) Technical Specifications v1.01 March, 2011 GM8036 LASER SWEEP OPTICAL SPECTRUM ANALYZER (1525 ~ 1610 nm) UC INSTRUMENTS GM8036
More informationSensing Technology. A company of the BRUGG Group
Sensing Technology. Applications. 2 Basic_Sensing_e.ppt / ad Laser. LASER λ 0 [nm] Intensity λ [nm] λ 0 3 Basic_Sensing_e.ppt / ad Rayleigh, Brillouin, Raman Scattering. LASER λ 0 [nm] Rayleigh Intensity
More informationOverview of fiber optic sensing system: BOTDR and its applications
1 Overview of fiber optic sensing system: BOTDR and its applications Hiroshi Naruse Mie University June 12, 2008 in Santiago, Chile Introduction of Mie University 2 There are about 70 national universities
More informationFiber optic system for monitoring large earth structures
BAM Federal Institute for Materials Research and Testing, Berlin Fiber optic system for monitoring large earth structures (BAM) 3 November 2011 Overview Motivation Components of dams and dikes structural
More informationFIBER OPTIC TESTING 1
FIBER OPTIC TESTING 1 FIBER OPTIC TEST AND MEASUREMENT SOLUTIONS We provide diagnostic and test instrumentation for the telecommunications industry, enabling complete characterization of optical components,
More informationDevelopment of Smart Phone Applications Linked with Fire Alarm Control Panel in Automatic Fire Detection System
, pp. 11-18 http://dx.doi.org/10.14257/ijsh.2016.10.2.02 Development of Smart Phone Applications Linked with Fire Alarm Control Panel in Automatic Fire Detection System Ha-Sung Kong 1, Jong-Seog Yang 2
More informationINTERNATIONAL STANDARD
INTERNATIONAL STANDARD IEC 62074-1 Edition 2.0 2014-02 colour inside Fibre optic interconnecting devices and passive components Fibre optic WDM devices Part 1: Generic specification INTERNATIONAL ELECTROTECHNICAL
More informationDistributed liquid level sensors using self-heated optical fibers for cryogenic liquid management
Distributed liquid level sensors using self-heated optical fibers for cryogenic liquid management Tong Chen, 1 Qingqing Wang, 1 Rongzhang Chen, 1 Botao Zhang, 1 Yuankun Lin, 2 and Kevin P. Chen 1, * 1
More informationPropagation loss in optical fibers (01/29/2016)
Propagation loss in optical fibers (01/29/2016) Project 2: Fiber loss measurement Goal: Fiber attenuation measurement using cutback method Project 2: Fiber loss measurement Project 2: Fiber loss measurement
More informationCurrent Research Topics in Optical Sensors and Laser Diagnostics
Current Research Topics in Optical Sensors and Laser Diagnostics Prof. Robert P. Lucht,Purdue University, W. Lafayette, IN February 16, 2006 Patterned Border Template 1 Survey of Spectroscopic Laser Diagnostic
More informationUse of fiber optic technology for relative humidity monitoring in RPC detectors
Use of fiber optic technology for relative humidity monitoring in RPC detectors 1 Centro Ricerche ENEA Frascati via E. Fermi 45, 00044 Frascati, Rome, Italy E-mail: michele.caponero@enea.it and Istituto
More informationTwo-Pipe Fiber Bragg grating Temperature Sensor Applied in Cable Trench and Cable Pit
Available online at www.sciencedirect.com Procedia Engineering 15 (2011) 710 714 Advanced in Control Engineering and Information Science Two-Pipe Fiber Bragg grating Temperature Sensor Applied in Cable
More informationANALYSIS OF OTDR MEASUREMENT DATA WITH WAVELET TRANSFORM. Hüseyin ACAR *
ANALYSIS OF OTDR MEASUREMENT DATA WITH WAVELET TRANSFORM Hüseyin ACAR * Department of Electrical and Electronics Engineering, Faculty of Engineering, Dicle University * hacar@dicle.edu.tr ABSTRACT: In
More informationTEMPERATURE EFFECT ON FIBER OPTICAL SENSORS FOR DRY CAST STORAGE HEALTH MONITORING
Proceedings of the ASME 2015 Pressure Vessels and Piping Conference PVP2015 July 19-23, 2015, Boston, Massachusetts, USA PVP2015-45623 TEMPERATURE EFFECT ON FIBER OPTICAL SENSORS FOR DRY CAST STORAGE HEALTH
More informationArtisan Technology Group is your source for quality new and certified-used/pre-owned equipment
Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment FAST SHIPPING AND DELIVERY TENS OF THOUSANDS OF IN-STOCK ITEMS EQUIPMENT DEMOS HUNDREDS OF MANUFACTURERS SUPPORTED
More informationFiber optic distributed pressure sensor for structural monitoring applications
Fiber optic distributed pressure sensor for structural monitoring applications S. Binu *a, V.P. Mahadevan Pillai a, N. Chandrasekaran b a Department of Optoelectronics, University of Kerala, Thiruvananthapuram-695581,
More informationFibre Optic Sensors: basic principles and most common applications
SMR 1829-20 Winter College on Fibre Optics, Fibre Lasers and Sensors 12-23 February 2007 Fibre Optic Sensors: basic principles and most common applications (PART 1) Hypolito José Kalinowski Federal University
More informationRecent Advances in Solid State Lasers and Nonlinear Optics for Remote Sensing
Recent Advances in Solid State Lasers and Nonlinear Optics for Remote Sensing Peter F. Moulton Q-Peak, Inc. Lidar Remote Sensing for Industry and Environment Monitoring III (Conference 4893) SPIE s Third
More informationA Multi-Channel Gas Sensor Using Fabry-Perot Interferometer-Based Infrared Spectrometer
Journal of Sensor Science and Technology Vol. 21, No. 6 (2012) pp. 402-407 http://dx.doi.org/10.5369/jsst.2012.21.6.402 pissn 1225-5475/eISSN 2093-7563 A Multi-Channel Gas Sensor Using Fabry-Perot Interferometer-Based
More informationMethodology of Implementing the Pulse code techniques for Distributed Optical Fiber Sensors by using FPGA: Cyclic Simplex Coding
Methodology of Implementing the Pulse code techniques for Distributed Optical Fiber Sensors by using FPGA: Cyclic Simplex Coding Yelkal Mulualem Lecturer, Department of Information Technology, College
More informationThe FEL Facility Optical Diagnostics and FEL Characterization
The FEL Facility Optical Diagnostics and FEL Characterization M. Shinn, C. Behre, S. Benson, J. Coleman, R. Evans, A. Grippo, J. Gubeli, D. Hardy, K. Jordan, G. Neil, S. Zhang G. Williams Jefferson Lab
More informationIntegration of distributed strain and temperature sensors in composite coiled tubing
Integration of distributed strain and temperature sensors in composite coiled tubing Daniele Inaudi and Branko Glisic SMARTEC SA, Via Pobiette 11, CH-6928 Manno, Switzerland, www.smartec.ch ABSTRACT Composite
More informationComparative study of the conventional and optical communication analog fire detector signal attenuations with various number of fire detectors
, pp.326-338 http://dx.doi.org/10.14257/astl.2015. Comparative study of the conventional and optical communication analog fire detector signal attenuations with various number of fire detectors Ha-Sung
More informationCompact Portable QEPAS Multi-gas Sensor
Compact Portable QEPAS Multi-gas Sensor Lei Dong*, Anatoliy A. Kosterev, David Thomazy, Frank K. Tittel Department of Electric and Computer Engineering, Rice University, 6100 Main Street, Houston, TX,
More information- - Markus Brüne 1, Wilhelm Furian 2, Wieland Hill 3, and Andreas Pflitsch 1 1 Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany 2 Humboldt-Universität zu Berlin, Unter den Linden
More informationTransport research opportunities and needs: What can fibre optics do for us? Stephen James Engineering Photonics
Transport research opportunities and needs: What can fibre optics do for us? Stephen James Engineering Photonics My research interests Development and practical application of optical fibre sensors Multiplexed
More informationDISTRIBUTION STATEMENT
NSRP National Shipbuilding Research Program Distributed Temperature Sensing for Inspection of Electrical Panels on Navy Ships Jeff Callen Penn State Electro-Optics Center March 7-9, 2017 Charleston, SC
More informationNovel Optical Sensors based on Nonlinear Effects in Few-mode Fibers
Novel Optical Sensors based on Nonlinear Effects in Few-mode Fibers Zhongqi Pan; Yi Weng Dept. of Electrical and Computer Engineering, University of Louisiana at Lafayette, Lafayette, LA OSA Technical
More informationAsset Integrity Monitoring
Asset Integrity Monitoring Cementys, Your Leader in Optical Fiber technology for AIM Our activities and services : Our activities are focused on our core knowledge and experience, we offer products and
More informationFIBER-OPTIC SMART STRUCTURES FOR MONITORING AND MANAGING THE HEALTH OF TRANSPORTATION INFRASTRUCTURES
FIBER-OPTIC SMART STRUCTURES FOR MONITORING AND MANAGING THE HEALTH OF TRANSPORTATION INFRASTRUCTURES Final Report METRANS Project 09-13 April 2010 Principal Investigator: Chin Chang College of Engineering/Department
More informationDISTRIBUTION STATEMENT
NSRP National Shipbuilding Research Program Distributed Temperature Sensing for Inspection of Electrical Panels on Navy Ships Jeff Callen Penn State Electro-Optics Center June 20-21, 2017 Portland, ME
More informationDETECTION AND LOCALIZATION OF MICRO AND MULTIPHASE LEAKAGES USING DISTRIBUTED FIBER OPTIC SENSING
DETECTION AND LOCALIZATION OF MICRO AND MULTIPHASE LEAKAGES USING DISTRIBUTED FIBER OPTIC SENSING ABSTRACT Distributed fiber optic sensing offers the ability to measure temperatures and strain at thousands
More informationCommunications. Sensing. Instrumentation. Delivering tomorrow s optical and photonic solutions today. BREAKTHROUGH PHOTONIC PRODUCTS
Communications. Sensing. Instrumentation. BREAKTHROUGH PHOTONIC PRODUCTS ADVANCED MATERIALS MICRO-MECHANICAL NANO-STRUCTURE TECHNOLOGY Delivering tomorrow s optical and photonic solutions today. Capabilities
More informationIntelligent Detection and Identification in Fiber-Optical Perimeter Intrusion Monitoring System Based on the FBG Sensor Network
PHOTONIC SENSORS / Vol. 5, No. 4, 2015: 365 375 Intelligent Detection and Identification in Fiber-Optical Perimeter Intrusion Monitoring System Based on the FBG Sensor Network Huijuan WU 1*, Ya QIAN 1,
More informationThis document is downloaded from DR-NTU, Nanyang Technological University Library, Singapore.
This document is downloaded from DR-NTU, Nanyang Technological University Library, Singapore. Title Study of applying fiber based laser with the primary standard for optical power and improvement of spectral
More informationDistributed flow sensing using optical hot -wire grid
Distributed flow sensing using optical hot -wire grid Tong Chen, Qingqing Wang, Botao Zhang, Rongzhang Chen, and Kevin P. Chen * Department of Electrical and Computer Engineering, University of Pittsburgh,
More informationAn FT-NIR Primer. NR800-A-006
Industry: Product: Oils and Gas NR800 Near Infra-red Spectroscopy Like other forms of spectroscopy, light from a lamp (usually called the source ) is passed through a sample and measured by a detector.
More informationOptical Fiber Sensors for Permanent Downwell Monitoring Applications in the Oil and Gas Industry
400 INVITED PAPER Special Issue on Optical Fiber Sensors Optical Fiber Sensors for Permanent Downwell Monitoring Applications in the Oil and Gas Industry Alan D. KERSEY a), Nonmember SUMMARY This paper
More informationCase Study - Trains. Hong Kong, 2007
Case Study - Trains Hong Kong, 2007 FBG Sensing System for Health Monitoring of Trains 2 Aim Location System Integrator End Customer To provide real-time and continuous monitoring of the structural condition
More informationTechnology to Application
Technology to Application An Introduction to Limited Limited is an engineering consultancy specialising in the provision of bespoke sensing and measurement solutions and the integration and deployment
More informationHot Air-Microwave Combined Drying Characteristics of Gypsum Board. Won-Pyo Chun, Sung-Il Kim, and Ki-Woo Lee 1
European Drying Conference - EuroDrying'11 Palma. Balearic Island, Spain, 26-28 October 11 Hot Air-Microwave Combined Drying Characteristics of Gypsum Board Won-Pyo Chun, Sung-Il Kim, and Ki-Woo Lee 1
More informationProduct Specification
Product Specification R9300TH Hybrid Raman-EDFA, Dual Raman Pump PN: FOA-R9300TH-HBR3C-AA001 Document No.: 1213710 Revision:A0 0 Date: 18-May-14 Customer: General Product Features Integrated Raman and
More informationFiber Optic Sensor technology for Non-optical parameter measurement
Fiber Optic Sensor technology for Non-optical parameter measurement Swapnil R. Chilap 1, Mrs. Kadambari Sharma 2, 1 M.E.Student, 2 Assistant Professor, Department of Instrumentation Engineering, Vivekanand
More informationCarlos Borda Omnisens S.A. Subsea Asia Conference June 2014
Carlos Borda Omnisens S.A. Subsea Asia Conference June 2014 Agenda Who is Omnisens? Distributed Fiber Optic Monitoring Power Umbilicals Flow Assurance (Heated Flowlines) Direct Electrical Heating (DEH)
More informationAcoustic emission detection with fiber optical sensors for dry cask storage health monitoring
SPIE Smart Structure and Materials + Nondestructive Evaluation and Health Monitoring 2016, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, Las Vegas, NV, 20-24 March,
More informationAgilent 81663A DFB Laser 8165xA Fabry-Perot Lasers
DFB Laser 8165xA Fabry-Perot Lasers Data Sheet Introduction The high power DFB Laser Source modules are best suited for optical amplifier test and DWDM system test applications. The Fabry-Perot Laser Sources
More informationOverview of coherent reflectometry techniques: characterization of Components and small systems
Overview of coherent reflectometry techniques: characterization of Components and small systems M. Wegmiiller, P. Oberson, J.P. von der Weid*, 0. Guinnard, L. Guinnard, C. Vinegoni, M. Legrk, N. Gisin
More informationA Study on Cooling Rate with Blade and Sound Fire Extinguisher
International Journal of Engineering Research and Technology. ISSN 0974-3154 Volume 11, Number 12 (2018), pp. 1969-1976 International Research Publication House http://www.irphouse.com A Study on Cooling
More informationChapter 1. Introduction
1.1 Background of the Proposed Research The measurement of temperature has been playing a critical role in various technical areas from civilian to military applications. According to all recent major
More information