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Scintillating fiber applications in nuclear research 闪烁光纤在核研究中的应用
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245568
M. Bliss, R. A. Craig
{"title":"Scintillating fiber applications in nuclear research","authors":"M. Bliss, R. A. Craig","doi":"10.1117/12.245568","DOIUrl":"https://doi.org/10.1117/12.245568","url":null,"abstract":"This paper provides a brief summary of the scintillation process in organic and inorganic materials, the properties and uses of fiber lightguides made from these materials. Also presented are some recent data on a new application of scintillating fiber lightguides in nuclear medicine.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128411708","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
Effect of input polarization angle on force sensitivity of embedded single-mode polarimetric sensors 输入偏振角对嵌入式单模偏振传感器力灵敏度的影响
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245569
A. Asundi, H. Cheng, S. Toh, C. Tay
{"title":"Effect of input polarization angle on force sensitivity of embedded single-mode polarimetric sensors","authors":"A. Asundi, H. Cheng, S. Toh, C. Tay","doi":"10.1117/12.245569","DOIUrl":"https://doi.org/10.1117/12.245569","url":null,"abstract":"The effect of input angle of polarization on the force sensitivity of embedded single mode fibers was investigated. Two types of fiber specimens were used -- one consisted of a fiber embedded with its protective plastic coating intact while the other had a fiber stripped of this coating. Plane polarized light, whose direction could be varied, was launched into the fibers and the embedded portions were compressed. The polarization changes due to birefringence effects were recorded with a pair of polarizers and photodiodes. The experiments show that the amount of polarization change due to force varied with input polarization angle. Hence, the force sensitivity of polarimetric stress sensors depended on the input angle of the plane polarized light. It was also found that the load- induced polarization changes were more significant in the stripped specimen than in the fiber embedded with coating.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133633971","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: 1
Efficient modeling of optical waveguides and fibers with chemical sensing applications 光波导和光纤与化学传感应用的有效建模
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245572
A. Weisshaar, K. Remley
{"title":"Efficient modeling of optical waveguides and fibers with chemical sensing applications","authors":"A. Weisshaar, K. Remley","doi":"10.1117/12.245572","DOIUrl":"https://doi.org/10.1117/12.245572","url":null,"abstract":"The impedance boundary method of moments (IBMOM) for planar optical waveguides is reviewed. An extension of the IBMOM for optical fibers with truncated graded index profile is described. Results for a step index fiber show that virtually exact solutions for the modal field profile and propagation constant can be obtained with only three Legendre expansion functions. The IBMOM is applied in the design and analysis of an evanescent field optical waveguide chemical sensor which utilizes an antiresonant reflecting optical waveguide (ARROW) structure and is implemented as a Mach-Zehnder interferometer. The ARROW structure allows the use of a 5 micrometer wide guiding region for efficient coupling into a single mode optical fiber. The ARROW sensor is designed for a sensitivity of 180 degrees/cm phase change for a change of 0.05 in refractive index.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121606648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fiber optic sensing using low-coherence interferometry 使用低相干干涉测量的光纤传感
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245583
W. Sorin
{"title":"Fiber optic sensing using low-coherence interferometry","authors":"W. Sorin","doi":"10.1117/12.245583","DOIUrl":"https://doi.org/10.1117/12.245583","url":null,"abstract":"Sensing schemes using optical low coherence interferometry can offer advantages over the more conventional long coherence length interferometric techniques. These advantages are discussed as well as various techniques for single and multiplexed sensing arrangements.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116348926","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: 1
Multiparameter sensing with fiber Bragg gratings 光纤布拉格光栅多参数传感
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245581
C. M. Lawrence, D. Nelson, E. Udd
{"title":"Multiparameter sensing with fiber Bragg gratings","authors":"C. M. Lawrence, D. Nelson, E. Udd","doi":"10.1117/12.245581","DOIUrl":"https://doi.org/10.1117/12.245581","url":null,"abstract":"This paper describes the design of a fiber optic sensor capable of sensing temperature and three independent components of strain simultaneously in a single, short gage length device. The sensor utilizes two fiber Bragg gratings at widely spaced wavelengths (1300 nm and 1550 nm) written at a single location in polarization maintaining optical fiber. When a broad-band light source is used to illuminate the gratings, the reflected spectrum will contain four peaks corresponding to the two polarization states for each of the two gratings. If the fiber is subjected to a change in temperature or strain, the resulting change in wavelength of the reflected peaks can be used to determine the magnitude and direction of the perturbation. In theory, the four peaks can be used to simultaneously determine the grating temperature, and three independent components of strain in the fiber.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127120701","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: 29
Fiber optic components for single-mode fiber optic sensors 单模光纤传感器用光纤元件
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245585
Edward M. Schmidlin
{"title":"Fiber optic components for single-mode fiber optic sensors","authors":"Edward M. Schmidlin","doi":"10.1117/12.245585","DOIUrl":"https://doi.org/10.1117/12.245585","url":null,"abstract":"As the market for fiber optic sensors increases, the demand for specialty optical fibers and components also increases. Today there are numerous fibers and components available to the fiber optic sensor developer, many of which have been developed by, and spun-off from, the larger telecommunications industry. This paper is a review of different optical fibers and components that are available to the fiber sensor community, and why some components are better than others for certain applications. Specific items reviewed here are: single-mode fibers, new cost effective polarization maintaining fibers, specialty fiber coatings, erbium doped fibers, bend insensitive single-mode fibers, fiber Bragg gratings and high reliability fiber couplers and taps.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128982024","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: 1
Progress toward a large-area chemical sensor 大面积化学传感器的研究进展
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245574
M. Bliss, R. A. Craig, S. Kaganove, D. S. Sunberg
{"title":"Progress toward a large-area chemical sensor","authors":"M. Bliss, R. A. Craig, S. Kaganove, D. S. Sunberg","doi":"10.1117/12.245574","DOIUrl":"https://doi.org/10.1117/12.245574","url":null,"abstract":"Pacific Northwest National Laboratory is developing a large- area, fiber-optic chemical sensor that combines chemically selective coatings and optical spectroscopy. This is a potentially hyphenated sensing technique because of the ability to collect broadband spectroscopic information in addition to sensing the quantity of the target species. Selective compound coating of optical waveguides enables the production of chemical sensors in large lot sizes. This paper describes the progress to date to produce iodine vapor selective fiber sensors that use through the fiber absorption spectroscopy. Spectra have been collected on uncalibrated I2/N2 gas mixtures using visible light.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"303 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132980549","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
Low-cost fiber optic interferometric sensors 低成本光纤干涉传感器
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245584
J. Bush, C. A. Davis, Fred P. McNair, A. Cekorich, John A. Bostick
{"title":"Low-cost fiber optic interferometric sensors","authors":"J. Bush, C. A. Davis, Fred P. McNair, A. Cekorich, John A. Bostick","doi":"10.1117/12.245584","DOIUrl":"https://doi.org/10.1117/12.245584","url":null,"abstract":"This paper outlines recent progress made by Optiphase Inc. in the development of low cost fiber optic interferometric sensors. The paper's focus is on components under development, specific to interferometric fiber sensors (IFS), which aren't commercially available through normal telecommunications distribution channels.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133767834","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
Intensity-modulated deformation sensor 强度调制变形传感器
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245570
A. Djordjevich, M. Bošković
{"title":"Intensity-modulated deformation sensor","authors":"A. Djordjevich, M. Bošković","doi":"10.1117/12.245570","DOIUrl":"https://doi.org/10.1117/12.245570","url":null,"abstract":"The true/apparent strain ambiguity associated with structurally embedded sensors of strain can be avoided with a novel sensor that measures deformation curvature. This fiber optic sensor is intensity modulated. Suitable fiber treatment enables the sensitivity to relate selectively to deformation about a preferential axis. With the addition of an inexpensive light-loss measuring system, a device is achieved which can readily interface with a computer. In the case of structural thicknesses below 1 cm, the proposed sensor exceeds the sensitivity of resistive strain gauges, especially along the neutral axis where strain cannot be measured in bending. Since strain and curvature are functionally related, either one can usually be deduced from the knowledge of the other. Distributed curvature measurements are possible and sensors can be tailor-made for a particular vibration mode in order to achieve modal decoupling.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130480157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fiber optic components and systems at Oregon State University 俄勒冈州立大学的光纤元件和系统
Pacific Northwest Fiber Optic Sensor Pub Date : 1996-08-05 DOI: 10.1117/12.245571
T. Plant, M. Subramanian
{"title":"Fiber optic components and systems at Oregon State University","authors":"T. Plant, M. Subramanian","doi":"10.1117/12.245571","DOIUrl":"https://doi.org/10.1117/12.245571","url":null,"abstract":"Research efforts in our department include work on novel GaAs/AlGaAs laser structures and photodetectors which could be used in fiber optic sensor applications. Brief descriptions are given of three such components: a HEMT- compatible, very low threshold diode laser; a high-gain traveling-wave amplifier or high-power, broad linewidth LED; and a MODFET photoconductor. A senior/graduate level course is also taught on guided wave optics. In this lecture/laboratory course, students do design projects on either fiber optic sensors or fiber communication systems. Two examples of student fiber sensor projects will be given: a pressure sensor and an interferometric temperature sensor.","PeriodicalId":293004,"journal":{"name":"Pacific Northwest Fiber Optic Sensor","volume":"282 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134404589","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
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