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2008 1st Asia-Pacific Optical Fiber Sensors Conference最新文献

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Characteristics of Bragg gratings in all-solid photonic bandgap fiber 全固体光子带隙光纤中Bragg光栅的特性
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226302
B. Guan, Zhi Wang, Yang Zhang, Da Chen
{"title":"Characteristics of Bragg gratings in all-solid photonic bandgap fiber","authors":"B. Guan, Zhi Wang, Yang Zhang, Da Chen","doi":"10.1109/APOS.2008.5226302","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226302","url":null,"abstract":"We report on fiber Bragg gratings in all-solid photonic bandgap fiber that composed of a triangular array of high-index Ge-doped rods in pure silica background with fluorine-doped index-depressed layer surrounding the Ge-doped rod. Fiber Bragg gratings were photowritten with 193 nm ArF excimer laser and characterized for their response to strain, temperature, bending and torsion. These gratings couple light from the forward core mode to not only backward core mode but also backward rod modes. This results in multiple resonance peaks in the reflection spectrum. All resonance wavelengths exhibited the same temperature and strain response with coefficient similar to that of Bragg gratings in standard single-mode fiber. The strength of the resonance peaks corresponding to the backward rod modes showed high sensitivity to bending and torsion.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121780184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A DFB fiber laser sensor system with ultra-high resolution and its noise analysis 超高分辨率DFB光纤激光传感器系统及其噪声分析
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226313
Hao Xiao, Yuliang Liu, Jun He, Fang Li
{"title":"A DFB fiber laser sensor system with ultra-high resolution and its noise analysis","authors":"Hao Xiao, Yuliang Liu, Jun He, Fang Li","doi":"10.1109/APOS.2008.5226313","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226313","url":null,"abstract":"We describe a distributed feedback fiber laser (DFB FL) sensor system with ultra-high resolution. The sensor is made by writing distributed feedback structures into a high gain active fiber, and the system employs an unbalanced Michelson interferometer to translate laser wavelength shifts induced by weak measurands into phase shifts. A digital phase generated carrier demodulation scheme is introduced to achieve ultra-high resolution interrogation. A detailed noise analysis of the system is presented, and it is shown that the system resolution is limited by the frequency noise of the DFB FL.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125971443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Surface Plasmon Resonance sensors based on polymer optical fiber 基于聚合物光纤的表面等离子共振传感器
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226283
R. Zheng, Yonghua Lu, Zhi-guo Xie, Jun Tao, Kaiquan Lin, H. Ming
{"title":"Surface Plasmon Resonance sensors based on polymer optical fiber","authors":"R. Zheng, Yonghua Lu, Zhi-guo Xie, Jun Tao, Kaiquan Lin, H. Ming","doi":"10.1109/APOS.2008.5226283","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226283","url":null,"abstract":"Surface Plasmon Resonance (SPR) is a powerful technique for directly sensing in biological studies, chemical detection and environmental pollution monitoring. In this paper, we present polymer optical fiber application in SPR sensors, including wavelength interrogation SPR sensor and surface enhanced Raman scattering (SERS) probe. Polymer optical fiber (POF) is used to effectively couple the incident light from light source, and collect reflective light into spectrometer. It also makes the sensing system more flexible and reliable. Gold nanorods with 30 nm long axis and average aspect ratios 3:1 are synthesized using seed-mediated growth method. Combining Au nanorods with POF, we can easily realize fiber SERS sensor. Long-period fiber gratings are fabricated on single mode polymer optical fiber with 120 um period and 50% duty cycle. The polarization characteristic of this kind of birefringent grating is studied. Theoretical analysis shows this type grating has two separated polarization peaks, and it will be advantageous in SPR sensing applications.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124003074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Interrogation a Fiber Bragg Grating vibration sensor by narrow line width light 用窄线宽光研究光纤光栅振动传感器
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226319
Jun Chang, Dianheng Huo, Liangzhu Ma, Xiao-hui Liu, Tong-yu Liu, Chang Wang
{"title":"Interrogation a Fiber Bragg Grating vibration sensor by narrow line width light","authors":"Jun Chang, Dianheng Huo, Liangzhu Ma, Xiao-hui Liu, Tong-yu Liu, Chang Wang","doi":"10.1109/APOS.2008.5226319","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226319","url":null,"abstract":"A method to interrogate fibre Bragg grating vibration sensor by narrow line width light is demonstrated; the interrogation scheme takes advantage of the intensity modulation of narrow spectral bandwidth light, such as distributed feedback laser, when a reflection or transmission spectrum curve of an FBG moves due to the strain which applied on the sensor. The sensor's response to acceleration frequency and amplitude is measured by experiment. We also discussed the factors which have impacts on the sensitivity of the interrogation system.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"175 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132082112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Miniaturized fiber-optic Fabry-Perot interferometer for highly sensitive refractive index measurement 用于高灵敏度折射率测量的小型化光纤法布里-珀罗干涉仪
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226287
M. Deng, Hong Li, Y. Rao, T. Zhu
{"title":"Miniaturized fiber-optic Fabry-Perot interferometer for highly sensitive refractive index measurement","authors":"M. Deng, Hong Li, Y. Rao, T. Zhu","doi":"10.1109/APOS.2008.5226287","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226287","url":null,"abstract":"This paper presents a novel miniaturized fiber-optic Fabry-Peort interferometer (FPI) for highly sensitive refractive index measurement. This device was tested for the refractive indices of various liquids including acetone and ethanol at room temperature. The sensitivity for measurement of refractive index change of ethanol is 1138 nm/RIU at the wavelength of 1550 nm. In addition, the sensor fabrication is simple including only cleaving, splicing, and etching. The signal is stable with high visibility. Therefore, it provides a valuable tool in biological and chemical applications.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121275462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Development of a broadly tunable mid-infrared laser source for highly sensitive multiple trace gas detection 用于高灵敏度多种微量气体检测的宽可调谐中红外激光源的研制
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226298
Xiao-juan Cui, F. Dong, Yu-jun Zhang, Ruifeng Kan, Yi-ben Cui, Min Wang, Dong Chen, Jian-guo Liu, Wenqing Liu
{"title":"Development of a broadly tunable mid-infrared laser source for highly sensitive multiple trace gas detection","authors":"Xiao-juan Cui, F. Dong, Yu-jun Zhang, Ruifeng Kan, Yi-ben Cui, Min Wang, Dong Chen, Jian-guo Liu, Wenqing Liu","doi":"10.1109/APOS.2008.5226298","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226298","url":null,"abstract":"A room-temperature broadly tunable mid-infrared difference frequency laser source for highly sensitive trace gas detection has been developed recently in our laboratory. The mid-infrared laser system is based on quasi-phase-matched (QPM) difference frequency generation (DFG) in a multi-grating, temperature-controlled periodically poled LiNbO3 (PPLN) crystal and employs two near-infrared diode lasers as pump sources. The mid-infrared coherent radiation generated was tunable from 3.2 to 3.7 mum with an output power of about 100 muW. By changing one of the pump laser head with another wavelength range we can readily obtain other needed mid-infrared wavelength range cover. Performance of the mid-infrared laser system and its application to highly sensitive spectroscopic detection of CH4, HCI, CH2O and NO2 has been carried out. A multi-reflection White cell was used in the experiment gaining ppb-level sensitivity. The DFG laser system has the features of compact, room-temperature operation, narrow line-width and broadly continuous tunable range for potential applications in industry and environmental monitoring.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117096019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Fiber Bragg gratings in small-core Ge-Doped photonic crystal fibers 小芯掺锗光子晶体光纤中的光纤Bragg光栅
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226304
Yiping Wang, H. Bartelt, W. Ecke, R. Willsch, J. Kobelke, M. Kautz, S. Brueckner, M. Rothhardt
{"title":"Fiber Bragg gratings in small-core Ge-Doped photonic crystal fibers","authors":"Yiping Wang, H. Bartelt, W. Ecke, R. Willsch, J. Kobelke, M. Kautz, S. Brueckner, M. Rothhardt","doi":"10.1109/APOS.2008.5226304","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226304","url":null,"abstract":"We report about fiber Bragg gratings (FBGs) inscribed in a small-core Ge-doped photonic crystal fibers with a UV laser and a Talbot interferometer. We systematically investigated the responses of such FBGs to temperature, strain, bending, and transverse-loading. The Bragg wavelength of the FBGs shifts toward longer wavelengths with increasing temperature, tensile strain, and transverse-loading. The bending and transverse-loading properties of the FBGs depend strongly on the fiber orientations.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121348571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Fiber laser based multiplexed sensing system 光纤激光多路传感系统
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226296
Jianhua Luo, Bo Liu, Haibin Zhou, Hao Zhang, S. Yan
{"title":"Fiber laser based multiplexed sensing system","authors":"Jianhua Luo, Bo Liu, Haibin Zhou, Hao Zhang, S. Yan","doi":"10.1109/APOS.2008.5226296","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226296","url":null,"abstract":"We propose a laser sensing system based on beat frequency demodulation. The sensor uses a single-longitudinal-mode distributed Bragg reflector (DBR) fiber laser as sensing element. This laser sensor has great multiplexing capability due to its wide free spectral range. Wavelength-Division-Multiplex (WDM) and Frequency-Division-Multiplex (FDM) techniques were studied. The sensing system has high sensitivity and multiplexing channels. It will be widely applied in health monitoring.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129837576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on pure bending characteristic of tilted fiber Bragg grating 倾斜光纤光栅纯弯曲特性研究
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226323
Bo Liu, Y. Miao, Haibin Zhou, Qida Zhao
{"title":"Research on pure bending characteristic of tilted fiber Bragg grating","authors":"Bo Liu, Y. Miao, Haibin Zhou, Qida Zhao","doi":"10.1109/APOS.2008.5226323","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226323","url":null,"abstract":"In this letter, we propose a novel structure of the pure macro-bending sensor based on the tilted fiber Bragg grating (TFBG). The TFBG located in the half circle with the different diameters is bent at a constant angle with respect to the tilted grating planes. With the variations of the curvature, the core-mode resonance is unchanged and the transmission power of cladding modes detected by the photodiodes varies linearly with curvature, while the ghost mode changes by the form of two-order polynomial. So we can use the transmission power of ghost mode or other cladding modes to detect bending curvature as shape sensor. From a practical point of view, the sensor proposed here is simple, low cost and easy to implement. Moreover, it is possible to make a temperature-insensitive shape senor due to the same temperature characteristic between the core mode and the cladding modes.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128452864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Implementation of phase generated carrier technique for FBG Laser Sensor multiplexed system based on Compact RIO 基于Compact RIO的光纤光栅激光传感器复用系统相位生成载波技术的实现
2008 1st Asia-Pacific Optical Fiber Sensors Conference Pub Date : 2008-08-01 DOI: 10.1109/APOS.2008.5226295
Lei Feng, Jun He, Jing-yuan Duan, Fang Li, Yuliang Liu
{"title":"Implementation of phase generated carrier technique for FBG Laser Sensor multiplexed system based on Compact RIO","authors":"Lei Feng, Jun He, Jing-yuan Duan, Fang Li, Yuliang Liu","doi":"10.1109/APOS.2008.5226295","DOIUrl":"https://doi.org/10.1109/APOS.2008.5226295","url":null,"abstract":"This paper presents the fundamental technique of PGC (phase generated carrier) and its realization on Compact RIO (Compact Reconfigurable Input and Output) which adopts real-time and FPGA (Field Programmable Grate Array) techniques. Improvement of the PGC technique is also introduced by using peak-to-peak value detection method to reduce the influence of variation of the light intensity. A four-element FBG (Fibre Bragg Gratings) Laser Sensor system is conducted in the experiment and the demodulated results demonstrate correlation coefficient as high as 0.995 with the reference signal and the dynamic range to be 120 dB @ 63 Hz.","PeriodicalId":154236,"journal":{"name":"2008 1st Asia-Pacific Optical Fiber Sensors Conference","volume":"510 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115342930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
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