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Accuracy-enhanced compensated optical fibre two-dimension microdisplacement transducer based on direct intensity modulation 基于直接强度调制的精度增强补偿光纤二维微位移传感器
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309700
Miguel A. Morante Rabago, A. Cobo, J. L. Arce-Diego, J. López-Higuera
{"title":"Accuracy-enhanced compensated optical fibre two-dimension microdisplacement transducer based on direct intensity modulation","authors":"Miguel A. Morante Rabago, A. Cobo, J. L. Arce-Diego, J. López-Higuera","doi":"10.1117/12.309700","DOIUrl":"https://doi.org/10.1117/12.309700","url":null,"abstract":"Several industrial applications require precise microdisplacement measurements. Optical intensity modulated sensors are very suitable to meet these needs because they are simple and cost-effective. Many have been presented that monitor one-dimension displacement in the direction of the optical axis of the system.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122852843","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
Development of a fully polarimetric optical time domain reflectometer (POTDR) 全偏振光学时域反射计的研制
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309664
A. S. Siddiqui
{"title":"Development of a fully polarimetric optical time domain reflectometer (POTDR)","authors":"A. S. Siddiqui","doi":"10.1117/12.309664","DOIUrl":"https://doi.org/10.1117/12.309664","url":null,"abstract":"communication networks [1 ,2]. Like the long haul point to point links these networks are alsoto be optically transparent and their end to end size can be several thousand kilometres. In bothcases optical transparency (that is, the absence of 3R regenerators, usually less than 100kmapart) results in dispersion and non-linear effects accumulating over the entire length of a link.Dispersion shifted (DS) fibres, together with dispersion management schemes, have nowessentially overcome the chromatic dispersion problem. These schemes can also keep thepenalties due to non-linear effects to within acceptable limits [3]. However, polarisation modedispersion (PMD) still remains as a significant and now the main dispersion mechanism whichlimits the maximum attainable bit rate times distance product for these links. This limitationdue to PMD applies not just to the new generation of links and networks using DS fibre. Theyalso apply, again as a highly significant limitation now, to upgrading the transmission bit rate","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122984583","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
Stable class 0.2 Sagnac current sensor using an annealed fiber sensor coil 稳定级0.2 Sagnac电流传感器，采用退火光纤传感器线圈
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309671
T. G. Nielsen, K. Bohnert
{"title":"Stable class 0.2 Sagnac current sensor using an annealed fiber sensor coil","authors":"T. G. Nielsen, K. Bohnert","doi":"10.1117/12.309671","DOIUrl":"https://doi.org/10.1117/12.309671","url":null,"abstract":"Optical fiber current sensors are of considerable interest to the electric power industry. Particularly attractive features as compared to conventional current transformers include inherent galvanic isolation of the sensor head from ground potential, less sensitivity to electromagnetic interference, smaller size and weight and higher safety.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114182700","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
FO hydrophone with hydrostatic pressure compensation: comparative experiment with a conventional piezo hydrophone 静压补偿FO型水听器:与传统压电水听器的对比实验
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309699
L. Cheng, D. de Bruijn
{"title":"FO hydrophone with hydrostatic pressure compensation: comparative experiment with a conventional piezo hydrophone","authors":"L. Cheng, D. de Bruijn","doi":"10.1117/12.309699","DOIUrl":"https://doi.org/10.1117/12.309699","url":null,"abstract":"This paper presents the performance of a TPD FO hydrophone with hydrostatic pressure compensation. In particularly a comparison with a conventional piezo hydrophone system is discussed.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127227455","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
Temperature sensor based on a single Bragg grating 基于单个布拉格光栅的温度传感器
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309695
G. Cranch
{"title":"Temperature sensor based on a single Bragg grating","authors":"G. Cranch","doi":"10.1117/12.309695","DOIUrl":"https://doi.org/10.1117/12.309695","url":null,"abstract":"The use of Bragg gratings for measurement of pressure, strain and temperature has been the subject of considerable research over the last decade. Techniques for temperature/strain discrimination are summarized and often involve either a specialized interrogation system or a dual grating approach. Presented here are techniques to manipulate the components of strain induced in a Bragg grating under pressure such that their total contribution to the Bragg resonance shift equates to zero. It will also be shown that the temperature sensitivity of the gratin is either unchanged or in some instances enhanced.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125465105","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
Two-dimensional bend sensing with a single multiple-core optical fibre 单根多芯光纤的二维弯曲传感
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309639
P. Blanchard, A. Greenaway, J. G. Burnett, P. Harrison
{"title":"Two-dimensional bend sensing with a single multiple-core optical fibre","authors":"P. Blanchard, A. Greenaway, J. G. Burnett, P. Harrison","doi":"10.1117/12.309639","DOIUrl":"https://doi.org/10.1117/12.309639","url":null,"abstract":"The shape of a structure which is known to deform in one-dimension only can be measured using a single optical fibre with one or more sensing elements multiplexed down its length. However, to monitor the shape of a structure that can deform in three-dimensions the full vector strain, or strain field, is required. To achieve this a minimum of three fibres, embedded in a non-collinear geometry, is required.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133990774","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
Integrated regenerative multicellular optical fiber grating control system 集成再生多蜂窝光纤光栅控制系统
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309697
G. Knowles, Bruce Bower, R. Rogowski, L. D. Melvin, B. Childers, S. G. Allison, L. Cross, Ruibin Lui
{"title":"Integrated regenerative multicellular optical fiber grating control system","authors":"G. Knowles, Bruce Bower, R. Rogowski, L. D. Melvin, B. Childers, S. G. Allison, L. Cross, Ruibin Lui","doi":"10.1117/12.309697","DOIUrl":"https://doi.org/10.1117/12.309697","url":null,"abstract":"A new technique is presented for active distributed fiber sensing for interrogating structural integrity and environmental monitoring using an innovation in low power integrated compact tunable tiber optic laser capability.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133183665","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
32-element TDM optical hydrophone array 32元TDM光水听器阵列
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309682
P. J. Nash, G. Cranch, L. Cheng, D. de Bruijn, I. Crowe
{"title":"32-element TDM optical hydrophone array","authors":"P. J. Nash, G. Cranch, L. Cheng, D. de Bruijn, I. Crowe","doi":"10.1117/12.309682","DOIUrl":"https://doi.org/10.1117/12.309682","url":null,"abstract":"This paper describes the design and development of an optical hydrophone array for a seabed application. Optical hydrophones have been under development in a number of countries as alternatives to piezoelectric based sensors, and the technology has now reached the stage where arrays with significant numbers of sensors can be constructed and deployed in realistic environments. The array described in this paper is being constructed under a collaboration between the Research Agency in the UK and TNO/TPD in the Netherlands. The system is modular in from and comprises up to 32 hydrophone elements in a time division multiplexed reflectometric architecture. The array has been designed to act as a testbed for different hydrophone technologies and to explore their use in an at-sea trial.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133063179","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: 13
Multipoint fibre sensors for trace gas monitoring using derivative spectroscopy 用导数光谱法监测痕量气体的多点光纤传感器
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309658
G. Stewart, B. Culshaw, C. Tandy, D. Moodie, R. Pride
{"title":"Multipoint fibre sensors for trace gas monitoring using derivative spectroscopy","authors":"G. Stewart, B. Culshaw, C. Tandy, D. Moodie, R. Pride","doi":"10.1117/12.309658","DOIUrl":"https://doi.org/10.1117/12.309658","url":null,"abstract":"A number of important gases in the context of environmental and safety issues possess absorption lines in the near-IR region of the spectrum between 1 and 2 micrometers . These include gases such as carbon monoxide, carbon dioxide, hydrogen sulphide and methane. The availability of low cost communications fiber and components such as connectors and couplers make this spectral region attractive for the development of fiber sensor networks for continuous monitoring of trace gases. However, the absorption lines are weak and careful design of the modulation and signal processing schemes are required in order to obtain adequate sensitivities for commercial application. Furthermore the laser source must operate around the specific wavelength of the gas absorption line and the resulting high cost of manufacture needs to be mitigated by arranging for a large number of sensor locations within the fiber network. Here we illustrate how the above concerns can be met in the case of methane gas where we have developed a multi-point sensor network with adequate sensitivity for safety monitoring.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"13 22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133884699","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
Bragg grating extensometer rods (BGX) for geotechnical strain measurements 用于岩土应变测量的Bragg光栅延伸计杆(BGX)
Optical Fibre Sensors Pub Date : 1998-06-18 DOI: 10.1117/12.309676
C. Schmidt-Hattenberger, G. Borm
{"title":"Bragg grating extensometer rods (BGX) for geotechnical strain measurements","authors":"C. Schmidt-Hattenberger, G. Borm","doi":"10.1117/12.309676","DOIUrl":"https://doi.org/10.1117/12.309676","url":null,"abstract":"We report on a new type of optical extensometer for strain measurement in geotechnical and civil engineering applications. The system key elements are fiber Bragg gratings embedded in glass fiber reinforced polymer rockbolts. In order to monitor rock deformations in tunnels, a prototype sensor rockbolt was designed. First measurements have been made to demonstrate the characteristics of the sensor system.","PeriodicalId":399876,"journal":{"name":"Optical Fibre Sensors","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127814057","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: 9
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