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Network Integration of Distributed Optical Fiber Temperature Sensor
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作者 Gui-Yan Li Hong-Lin Liu Zai-Xuan Zhang 《Journal of Electronic Science and Technology of China》 2008年第4期399-401,共3页
The integration of distributed optical fiber temperature sensor with supervisory control and data acquisition (SCADA) system is proposed and implemented. In the implementation of the integration, both the compatibil... The integration of distributed optical fiber temperature sensor with supervisory control and data acquisition (SCADA) system is proposed and implemented. In the implementation of the integration, both the compatibility with traditional system and the characteristics of distributed optical fiber temperature sensor is considered before Modbus TCP/IP protocol is chosen. The protocol is implemented with open source component Indy. The Modbus TCP/IP protocol used in the system is proved to be fast and robust. 展开更多
关键词 Distributed optical fiber temperature sensor Modbus TCP/IP supervisory control and dataacquisition (SCADA).
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Flexible Optical Waveguide Bent Loss Attenuation Effects Analysis and Modeling Application to an Intrinsic Optical Fiber Temperature Sensor 被引量:3
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作者 Mustapha Remouche Francis Georges Patrick Meyrueis 《Optics and Photonics Journal》 2012年第1期1-7,共7页
The temperature dependence of the bending loss light energy in multimode optical fibers is reported and analyzed. The work described in this paper aims to extend an initial previous analysis concerning planar optical ... The temperature dependence of the bending loss light energy in multimode optical fibers is reported and analyzed. The work described in this paper aims to extend an initial previous analysis concerning planar optical waveguides, light energy loss, to circular optical waveguides. The paper also presents à novel intrinsic fiber optic sensing device base on this study allowing to measure temperatures parameters. The simulation results are validated theoretically in the case of silica/silicone optical fiber. A comparison is done between results obtained with an optical fiber and the results obtained from the previous curved optical planar waveguide study. It is showed that the bending losses and the temperature measurement range depend on the curvature radius of an optical fiber or waveguide and the kind of the optical waveguide on which the sensing process is implemented. 展开更多
关键词 optical fiber LOSSES CURVATURE sensor temperature Micro Technology
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Highly sensitive optical fiber temperature sensor based on resonance in sidewall of liquid-filled silica capillary tube
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作者 Min Li Biao Feng Jiwen Yin 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第11期156-160,共5页
A highly sensitive optical fiber temperature sensor based on a section of liquid-filled silica capillary tube(SCT)between single mode fibers is proposed. Two micro-holes are drilled on two sides of SCT directly by usi... A highly sensitive optical fiber temperature sensor based on a section of liquid-filled silica capillary tube(SCT)between single mode fibers is proposed. Two micro-holes are drilled on two sides of SCT directly by using femtosecond laser micromachining, and liquid polymer is filled into the SCT through the micro-holes without any air bubbles and then sealed by using ultra-violet(UV) cure adhesive. The sidewall of the SCT forms a Fabry–Perot resonator, and loss peaks are achieved in the transmission spectrum of the SCT at the resonant wavelength. The resonance condition can be influenced by the refractive index variation of the liquid polymer filled in SCT, which is sensitive to temperature due to its high thermooptical coefficient(-2.98 × 10^-4℃^-1). The experimental result shows that the temperature sensitivity of the proposed fiber structure reaches 5.09 nm/℃ with a perfect linearity of 99.8%. In addition, it exhibits good repeatability and reliability in temperature sensing application. 展开更多
关键词 optical fiber sensors LIQUID FILLING temperature measurement
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Novel Fiber Optic Temperature Sensor with Full Compensation Based on Optical Absorption
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作者 WANGJue WANGWei-min 《Semiconductor Photonics and Technology》 CAS 2000年第4期236-241,共6页
A novel system configuration of fiber optic sensor based on optical abso rption is proposed. Several compensation measures are discussed. A simulated exp eriment is designed and the output curve of system is given. Th... A novel system configuration of fiber optic sensor based on optical abso rption is proposed. Several compensation measures are discussed. A simulated exp eriment is designed and the output curve of system is given. The experiment al result shows that these compensation measures are effective on dynamic distu rbances which are caused by background light and optical fiber bend. In addition , the drifts in the light source intensity, fiber losses, and photodetector effi ciency are also compensated. 展开更多
关键词 GaAs semiconductor temperature measurement fiber optic sensor REFLECTION COMPENSATION
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Mathematical Model of Fiber Optic Temperature Sensor Based on Optic Absorption and Experiment Testing
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作者 HU Yan-ling (Yanshan University, Qihuangdao 066004, CHN) 《Semiconductor Photonics and Technology》 CAS 2001年第1期60-64,共5页
On the basis of analysis on the temperature monitoring methods for high voltage devices, a new type of fiber optic sensor structure with reference channel is given. And the operation principle of fiber optic sensor is... On the basis of analysis on the temperature monitoring methods for high voltage devices, a new type of fiber optic sensor structure with reference channel is given. And the operation principle of fiber optic sensor is analysed at large based on the absorption of semiconductor chip. The mathematical model of both devices and the whole system are also given. It is proved by the experiment that this mathematical model is reliable. 展开更多
关键词 fiber optic temperature sensor Optic absorption reference channel Mathematical model
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Tunable and highly sensitive temperature sensor based on graphene photonic crystal fiber
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作者 Xu Cheng Xu Zhou +6 位作者 Chen Huang Can Liu Chaojie Ma Hao Hong Wentao Yu Kaihui Liu Zhongfan Liu 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第11期136-140,共5页
Optical fiber temperature sensors have been widely employed in enormous areas ranging from electric power industry,medical treatment,ocean dynamics to aerospace.Recently,graphene optical fiber temperature sensors attr... Optical fiber temperature sensors have been widely employed in enormous areas ranging from electric power industry,medical treatment,ocean dynamics to aerospace.Recently,graphene optical fiber temperature sensors attract tremendous attention for their merits of simple structure and direct power detecting ability.However,these sensors based on transfer techniques still have limitations in the relatively low sensitivity or distortion of the transmission characteristics,due to the unsuitable Fermi level of graphene and the destruction of fiber structure,respectively.Here,we propose a tunable and highly sensitive temperature sensor based on graphene photonic crystal fiber(Gr-PCF)with the non-destructive integration of graphene into the holes of PCF.This hybrid structure promises the intact fiber structure and transmission mode,which efficiently enhances the temperature detection ability of graphene.From our simulation,we find that the temperature sensitivity can be electrically tuned over four orders of magnitude and achieve up to~3.34×10^(-3) dB/(cm·℃)when the graphene Fermi level is~35 meV higher than half the incident photon energy.Additionally,this sensitivity can be further improved by~10 times through optimizing the PCF structure(such as the fiber hole diameter)to enhance the light–matter interaction.Our results provide a new way for the design of the highly sensitive temperature sensors and broaden applications in all-fiber optoelectronic devices. 展开更多
关键词 GRAPHENE photonic crystal fiber temperature sensor high sensitivity Fermi level
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Fabry-Perot Temperature Sensor for Quasi-Distributed Measurement Utilizing OTDR 被引量:1
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作者 Ping Xu Fu-Fei Pang Na Chen Zhen-Yi Chen Ting-Yun Wang 《Journal of Electronic Science and Technology of China》 2008年第4期393-395,共3页
A quasi-distributed Fabry-Perot fiber optic temperature sensor array using optical time domain reflectometry (OTDR) technique is presented. The F-P sensor is made by two face to face single-mode optical fibers and t... A quasi-distributed Fabry-Perot fiber optic temperature sensor array using optical time domain reflectometry (OTDR) technique is presented. The F-P sensor is made by two face to face single-mode optical fibers and their surfaces have been polished. Due to the low reflectivity of the fiber surfaces, the sensor is described as low Fresnel Fabry-Perot interferometer (FPI). The working principle is analyzed using twobeam optical interference approximation. To measure the temperature, a certain temperature sensitive material is filled in the cavity. The slight changes of the reflective intensity which is induced by the refractive index of the material was caught by OTDR. The length of the cavity is obtained by monitoring the interference spectrum which is used for the setting of the sensor static characteristics within the quasi-linear range. Based on our design, a three point sensor array are fabricated and characterized. The experimental results show that with the temperature increasing from -30℃ to 80℃, the reflectivity increase in a good linear manner. The sensitivity was approximate 0.074 dB℃. For the low transmission loss, more sensors can be integrated. 展开更多
关键词 fiber optics Fresnel reflection optical time-domain reflectometry temperature sensor .
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Optical Properties of High Sensitivity Fiber Bragg Grating on Temperature Sensor
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作者 Li Wang Shiya He Department of Applied Physics, Beijing University of Technology, Beijing 100022, China 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期843-844,共2页
In this paper, the spectrum shift properties of the center reflection wavelength detected to be based on the FBG sensor with ambient temperature change. The basic theoretical methods and numerical simulation for the s... In this paper, the spectrum shift properties of the center reflection wavelength detected to be based on the FBG sensor with ambient temperature change. The basic theoretical methods and numerical simulation for the spectral properties of uniform Bragg grating is analyzed by using coupling mode theory which is optical properties of high sensitivity fiber Bragg grating on temperature sensor in accordance with experiment. 展开更多
关键词 of in BE ET for FBG optical Properties of High sensitivity fiber Bragg Grating on temperature sensor on
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High-sensitivity temperature sensor based on Bragg grating in BDK-doped photosensitive polymer optical fiber 被引量:2
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作者 程旭升 邱薇薇 +4 位作者 武文轩 罗艳华 田秀杰 张其锦 朱冰 《Chinese Optics Letters》 SCIE EI CAS CSCD 2011年第2期8-10,共3页
A single-mode polymer optical fiber (POF) with highly photosensitive core doped with benzil dimethyl ketal (BDK) is fabricated and used for writing Bragg grating through the two-beam interference method. The Bragg... A single-mode polymer optical fiber (POF) with highly photosensitive core doped with benzil dimethyl ketal (BDK) is fabricated and used for writing Bragg grating through the two-beam interference method. The Bragg wavelength of the grating is about 1570 nm, while the full-width at half-maximum (FWHM) of the reflection peak is 0.3 nm. The temperature response of POF Bragg grating is theoretically analyzed and experimentally measured in contrast to silica optical fiber Bragg grating (FBG). The result shows that the temperature character of POF Bragg grating is negative, which is opposite to the silica optical FBG. The absolute value of the temperature response of POF Bragg grating is one order of magnitude higher than that of the silica optical FBG, making POF Bragg grating appear to be very attractive for constructing temperature sensors with high resolution. 展开更多
关键词 fiber Bragg gratings fiber optic sensors Light sensitive materials optical fibers PHOTOsensitivity SILICA temperature sensors
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High sensitivity D-shaped hole fiber temperature sensor based on surface plasmon resonance with liquid filling 被引量:3
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作者 SIJUN WENG LI PEI +2 位作者 JIANSHUAI WANG TIGANG NING JING LI 《Photonics Research》 SCIE EI 2017年第2期103-107,共5页
A high sensitivity D-shaped hole double-cladding fiber temperature sensor based on surface plasmon resonance(SPR)is designed and investigated by a full-vector finite element method.Within the D-shaped hole doublecladd... A high sensitivity D-shaped hole double-cladding fiber temperature sensor based on surface plasmon resonance(SPR)is designed and investigated by a full-vector finite element method.Within the D-shaped hole doublecladding fiber,the hollow D-section is coated with gold film and then injected in a high thermo-optic coefficient liquid to realize the high temperature sensitivity for the fiber SPR temperature sensor.The numerical simulation results show that the peaking loss of the D-shaped hole double-cladding fiber SPR is hugely influenced by the distance between the D-shaped hole and fiber core and by the thickness of the gold film,but the temperature sensitivity is almost insensitive to the above parameters.When the thermo-optic coefficient is -2.8×10^(-4)∕℃,the thickness of the gold film is 47 nm,and the distance between the D-shaped hole and fiber core is 5μm,the temperature sensitivity of the D-shaped hole fiber SPR sensor can reach to -3.635 nm∕℃. 展开更多
关键词 High sensitivity D-shaped hole fiber temperature sensor based on surface plasmon resonance with liquid filling MODE
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Low-noise and highly stable optical fiber temperature sensor using modified pulse-reference-based compensation technique
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作者 卞强 宋章启 +4 位作者 宋东雨 张学亮 李炳生 孟洲 于洋 《Chinese Optics Letters》 SCIE EI CAS CSCD 2018年第7期19-22,共4页
We modify the pulse-reference-based compensation technique and propose a low-noise and highly stable optical fiber temperature sensor based on a zinc telluride film-coated fiber tip. The system noise is measured to be... We modify the pulse-reference-based compensation technique and propose a low-noise and highly stable optical fiber temperature sensor based on a zinc telluride film-coated fiber tip. The system noise is measured to be 0.0005 dB, which makes it possible for the detection of the minor reflectivity change of the film at different temperatures. The temperature sensitivity is 0.0034 d B/℃, so the resolution can achieve 0.2℃. The maximum difference of the temperature output values of the sensor at 20℃ at different points in time is 0.39℃. The low cost, ultra-small size, high stability, and good repeatability of the sensor make it a promising temperature sensing device for practical application. 展开更多
关键词 Low-noise and highly stable optical fiber temperature sensor using modified pulse-reference-based compensation technique
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High-Sensitivity Temperature Sensor Based on Polarization Maintaining Fiber Sagnac Loop 被引量:10
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作者 Laipeng SHAO Junhui HU +3 位作者 Hanglin LU Jing DU Tianyin WU Yiping WANG 《Photonic Sensors》 SCIE EI CAS CSCD 2019年第1期25-32,共8页
A high-sensitivity all-fiber temperature sensor based on a Sagnac interferometer is demonstrated by splicing a section of polarization maintaining fiber(PMF)between two sections of standard single mode fibers(SMFs).In... A high-sensitivity all-fiber temperature sensor based on a Sagnac interferometer is demonstrated by splicing a section of polarization maintaining fiber(PMF)between two sections of standard single mode fibers(SMFs).In this sensor,the SMF-PMF-SMF structure in the Sagnac loop is bent into a circle to enhance the sensitivity.The length and curvature of the PMF in the loop are investigated and can be optimized to further increase the temperature sensitivity of the sensor. Results show that the radius of the circle has an important effect upon temperature sensitivity due to the bend-induced birefringence variation of the PMF.The SMF-PMF-SMF structure bent into a circle with a radius of 30mm exhibits a high-sensitivity temperature of 1.73nm/℃.The sensor is provided with the advantages of easy fabrication,low-insertion loss,and high sensitivity,which may find potential applications in the field of high precision temperature measurement. 展开更多
关键词 optical fiber sensor POLARIZATION maintaining fiber temperature sensor SAGNAC LOOP
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A Micro S-Shaped Optical Fiber Temperature Sensor Based on Dislocation Fiber Splice 被引量:2
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作者 Haitao YAN Pengfei LI +2 位作者 Haojie ZHANG Xiaoyue SHEN Yongzhen WANG 《Photonic Sensors》 SCIE EI CAS CSCD 2017年第4期372-376,共5页
We fabricated a simple, compact, and stable temperature sensor based on an S-shaped dislocated optical fiber. The dislocation optical fiber has two splice points, and we obtained the optimal parameters based on the th... We fabricated a simple, compact, and stable temperature sensor based on an S-shaped dislocated optical fiber. The dislocation optical fiber has two splice points, and we obtained the optimal parameters based on the theory and our experiment, such as the dislocation amount and length of the dislocation optical fiber. According to the relationship between the temperature and the peak wavelength shift, the temperature of the environment can be obtained. Then, we made this fiber a micro bending as S-shape between the two dislocation points, and the S-shaped micro bending part could release stress with the change in temperature and reduce the effect of stress on the temperature measurement. This structure could solve the problem of sensor distortion caused by the cross response of temperature and stress. We measured the S-shaped dislocation fiber sensor and the dislocation fiber without S-shape under the same environment and conditions, and the S-shaped dislocation fiber had the advantages of the stable reliability and good linearity. 展开更多
关键词 Dislocated optical fiber temperature sensor INTERFERENCE CROSS-sensitivity
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Miniature temperature sensor based on optical microfiber 被引量:2
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作者 卫正统 宋章启 +2 位作者 张学亮 于洋 孟洲 《Chinese Optics Letters》 SCIE EI CAS CSCD 2013年第11期17-20,共4页
Optical microfibers (OMs) are good alternatives in the field of sensing. In this letter, a simple and effective miniature temperature sensor based on OM is proposed and experimentally verified. Using pure water and ... Optical microfibers (OMs) are good alternatives in the field of sensing. In this letter, a simple and effective miniature temperature sensor based on OM is proposed and experimentally verified. Using pure water and fiber coating as the OM clad, an additional loss will occur due to the absorption of outer medium. The temperature of the outer environment can be estimated by monitoring the change in additional loss. In the demonstrated experiments, a series of OM with different diameters, waist lengths, and constructions are used as sensing elements. The correlation coefficients between the experimental results and the linear fittings are better than 0.99, and the temperature sensitivity obtained by the linear fittings can achieve -0.151 dB/℃ (in pure water) and -0.405 dB/℃ (covered by fiber coating). Moreover, higher sensitivity can be obtained by decreasing the diameter, increasing the waist length of the OM, or choosing the proper operating wavelength. 展开更多
关键词 COATINGS optical fibers temperature sensors
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High-sensitivity fiber liquid crystals temperature sensor with tiny size and simple tapered structure 被引量:3
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作者 Hai Zhang Jianyu Shang +3 位作者 Xiujuan Liu Weimin Sun Feiru Wang Yongjun Liu 《Chinese Optics Letters》 SCIE EI CAS CSCD 2020年第10期24-28,共5页
This Letter presents a new type of optical fiber probe used to detect temperature, whose structure is very simple.The optical fiber probe is filled with cholesteric liquid crystals(CLCs) whose reflected light varies w... This Letter presents a new type of optical fiber probe used to detect temperature, whose structure is very simple.The optical fiber probe is filled with cholesteric liquid crystals(CLCs) whose reflected light varies with temperature.The experimental results show that the proposed sensor can achieve a temperature sensitivity of 5.64 nm/°C in the temperature range of 18–40°C. The sensor has the advantages of simple structure, low cost, and easy mass manufacture. Its size is very tiny(the tapered structure, 125 μm in maximum diameter and <300 μm in length) and it is easy to integrate and measure. Meantime, the tapered structure of the probe is also ideal for measuring small samples such as cells and microfluidic channels, which will be a promising candidate for monitoring temperature fluctuations in small spaces. 展开更多
关键词 cholesteric liquid crystal temperature sensor optical fiber
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Review of femtosecond laser fabricated optical fiber high temperature sensors [Invited] 被引量:2
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作者 Dong-Ning Wang 《Chinese Optics Letters》 SCIE EI CAS CSCD 2021年第9期23-28,共6页
The femtosecond laser has been an efficient tool for optical fiber high temperature sensor construction.Here,we review the progress of optical fiber high temperature sensors based on femtosecond laser fabricated fiber... The femtosecond laser has been an efficient tool for optical fiber high temperature sensor construction.Here,we review the progress of optical fiber high temperature sensors based on femtosecond laser fabricated fiber gratings and various types of fiber in-line interferometers in silica fibers and sapphire fibers. 展开更多
关键词 optical fiber sensors femtosecond laser micromachining high temperature measurement
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Temperature sensor based on a single-mode tapered optical fiber 被引量:1
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作者 朱姗 邢洁雯 +1 位作者 庞拂飞 王廷云 《Journal of Shanghai University(English Edition)》 CAS 2011年第2期101-104,共4页
A temperature sensor is demonstrated and fabricated by coating the single-mode tapered optical fiber with temperature-sensitive silicone rubber. It works on the change of the evanescent fields in the tapered optical f... A temperature sensor is demonstrated and fabricated by coating the single-mode tapered optical fiber with temperature-sensitive silicone rubber. It works on the change of the evanescent fields in the tapered optical fiber. Small changes in the refractive index of coating film greatly influence the power of evanescent fields, which modulate the transmission optical power in the waist region. The range of temperature measured is from -20℃ to 70 ℃. The results show that the temperature sensor has high temperature sensitivity (0.012 mW/℃) and good repeatability. 展开更多
关键词 temperature sensor tapered optical fiber silicone rubber
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Micro-Structured Fiber Interferometer as Sensitive Temperature Sensor 被引量:2
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作者 F. C. FAVERO M. BECKER, R. SPITTEL M. ROTHHARDT J. KOBELKE H. BARTELT 《Photonic Sensors》 SCIE EI CAS 2013年第3期208-213,共6页
We report on a fast and sensitive temperature sensor using a micro-structured or photonic crystal fiber interferometer with a high germanium doped fiber core. The wavelength sensitivity for temperature variation was a... We report on a fast and sensitive temperature sensor using a micro-structured or photonic crystal fiber interferometer with a high germanium doped fiber core. The wavelength sensitivity for temperature variation was as high as △λ/△T= 78 pm/℃ up to 500℃, which was 6 times more sensitive than the fiber Bragg grating temperature sensitivity of △λ/△TT= 13pm/℃ at 1550nm. The sensor device was investigated conceming the sensitivity characteristics and response time. 展开更多
关键词 Micro-structured optical fiber fiber interferometer fiber temperature sensor
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A high sensitive fiber Bragg grating cryogenic temperature sensor 被引量:4
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作者 李阔 周振安 刘爱春 《Chinese Optics Letters》 SCIE EI CAS CSCD 2009年第2期121-123,共3页
At cryogenic temperature, a fiber Bragg grating (FBG) temperature sensor with controllable sensitivity and variable measurement range is demonstrated by using bimetal configuration. In experiments, sensitivities of ... At cryogenic temperature, a fiber Bragg grating (FBG) temperature sensor with controllable sensitivity and variable measurement range is demonstrated by using bimetal configuration. In experiments, sensitivities of -51.2, -86.4, and -520 pm/K are achieved by varying the lengths of the metals. Measurement ranges of 293 - 290.5, 283 - 280.5, and 259 - 256.5 K are achieved by shortening the distance of the gap among the metals. 展开更多
关键词 Cryogenics fiber optic components fiber optic sensors temperature sensors
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Novel Apodized Fiber Bragg GratingApplied for Medical Sensors:Performance Investigation
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作者 Ramya Arumugam Ramamoorthy Kumar +3 位作者 Samiappan Dhanalakshmi Khin Wee Lai Lei Jiao Xiang Wu 《Computer Modeling in Engineering & Sciences》 SCIE EI 2023年第4期301-323,共23页
Sensors play an important role in shaping and monitoring human health.Exploration of methods to use Fiber Bragg Grating(FBG)with enhanced sensitivity has attracted great interest in the field of medical research.In th... Sensors play an important role in shaping and monitoring human health.Exploration of methods to use Fiber Bragg Grating(FBG)with enhanced sensitivity has attracted great interest in the field of medical research.In this paper,a novel apodization function is proposed and performance evaluation and optimization of the same have been made.A comparison was conducted between various existing apodization functions and the proposed one based on optical characteristics and sensor parameters.The results evince the implementation of the proposed apodization function for vital sign measurement.The optical characteristics considered for evaluation are Peak Resonance Reflectivity level,Side Lobes Reflectivity level and FullWidth HalfMaximum(FWHM).The proposed novel apodization novel function has better FWHM,which is narrower than the FWHM of uniform FBG.Sensor characteristics like a quality parameter,detection accuracy and sensitivity also show improvement.The proposed novel apodization function is demonstrated to have a better shift in wavelength in terms of temperature and pulse measurement than the existing functions.The sensitivity of the proposed apodized function is enhanced with a Poly-dimethylsiloxane coating of varying thickness,which is 6 times and 5.14 times greater than uniform Fiber Bragg grating and FBG with the proposed novel apodization function,respectively,enhancing its utilization in the field of medicine. 展开更多
关键词 fiber bragg grating APODIZATION optical sensing temperature STRAIN sensitivity
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