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Applications of Photonic Technology最新文献

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Novel interrogation system for fiber Bragg grating sensor array 新型光纤光栅传感器阵列讯问系统
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.473926
T. Srinivas, T. Madan, V. S. Kumar, T. K. Kumar, A. Selvarajan
{"title":"Novel interrogation system for fiber Bragg grating sensor array","authors":"T. Srinivas, T. Madan, V. S. Kumar, T. K. Kumar, A. Selvarajan","doi":"10.1117/12.473926","DOIUrl":"https://doi.org/10.1117/12.473926","url":null,"abstract":"Interrogation techniques for fiber Bragg grating sensor arrays need particular attention in the case of structural health monitoring applications involving dynamic strain measurement. Typically the performance of the sensing system is dependent on both the sensor type and the interrogation method employed. A novel interrogation system is proposed here that consists of different interrogation units for each sensor in the array, each unit comprising of a circulator, chirped grating and a Mach-Zehnder interferometer. We present an analysis that consists of tracking the spectral changes as the light passes through various elements in the interrogation system. This is expected to help in the optimization of sensor and interrogation elements leading to improved performance of the health monitoring system.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126676337","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
Simplified white-light interferometric strain sensor based on HB fiber with automatic temperature compensation 基于HB光纤的自动温度补偿简化白光干涉应变传感器
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.473985
Jianjun Ma, W. Bock, W. Urbańczyk
{"title":"Simplified white-light interferometric strain sensor based on HB fiber with automatic temperature compensation","authors":"Jianjun Ma, W. Bock, W. Urbańczyk","doi":"10.1117/12.473985","DOIUrl":"https://doi.org/10.1117/12.473985","url":null,"abstract":"A simplified white-light interferometric strain sensor based on HB fibers with automatic temperature compensation is presented. A variety of experiments conducted within this study confirm an adequate temperature compensation could be achieved. Several different sensor structures were investigated during these experiments. One of the most important results shows that the interference contrast could significantly influence the measurement accuracy achievable by the system. Consequently, a 1% or even better absolute accuracy for short sensing fibers is possible if the contrast is enhanced to 0.5. A quasi-distributed cascade containing several discrete sensors with 0.5 contrast is also suggested.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129389352","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
Accurate modeling of polarization conversion in single or multiple curved waveguide sections 精确建模偏振转换在单一或多个弯曲波导部分
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.473807
S. Obayya, B. Rahman, K. Grattan
{"title":"Accurate modeling of polarization conversion in single or multiple curved waveguide sections","authors":"S. Obayya, B. Rahman, K. Grattan","doi":"10.1117/12.473807","DOIUrl":"https://doi.org/10.1117/12.473807","url":null,"abstract":"Using a rigorous full vectorial beam propagation model, based on the versatile finite element scheme, a novel design of polarization converters based on single or multiple curved waveguide sections is presented. The performance of the polarization rotator is evaluated and optimized in terms of the polarization conversion ratio, the device length and the scattering losses. Also, a study of the sensitivity of the device performance, with respect to different fabrication parameters has also been performed.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121134024","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
Near-real-time phase difference amplification 近实时相位差放大
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.473980
K. Matsuda, G. T. Bold, T. Barnes, C. Grover, C. Sheppard
{"title":"Near-real-time phase difference amplification","authors":"K. Matsuda, G. T. Bold, T. Barnes, C. Grover, C. Sheppard","doi":"10.1117/12.473980","DOIUrl":"https://doi.org/10.1117/12.473980","url":null,"abstract":"We describe an interferometric method for phase difference amplification in near real-time using an optically addressed liquid crystal spatial light modulator (LCSLM). The LCSLM has a rise time of 30ms and a decay time of 40ms, a resolution of 50 lp/mm, and a diffraction efficiency of 30%. The interference fringes obtained by a Michelson interferometer serve as input into the write side of the LCSLM and two beams are used to illuminate the read side. The nonlinearity of the LCSLM recording material produces the high-order diffracted beams. The nth and -nth order diffracted beams interfere with each other and the phase difference amplification is carried out in near real-time. We have demonstrated that it is possble to achieve phase difference amplification by a factor of 6 using phase stepping methods.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115812485","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
Dynamic field fiber polarization mode dispersion measuremements 动态场光纤偏振模色散测量
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.474413
D. Waddy, L. Chen, X. Bao
{"title":"Dynamic field fiber polarization mode dispersion measuremements","authors":"D. Waddy, L. Chen, X. Bao","doi":"10.1117/12.474413","DOIUrl":"https://doi.org/10.1117/12.474413","url":null,"abstract":"The state of polarization (SOP) is measured in various field optical fibers. A biased probability density is found. This is contrary to the generally accepted uniform probability density. A Maxwellian probability density function (PDF) for differential group delay (DGD) at a fixed wavelength will thus not occur when measured on these fibers for a median time period. Long term PMD measurements result in a quasi-Gaussian polarization mode dispersion (PMD) PDF when using an interferometric test-set. However, it is found that the interferometric quasi-Gaussian mean value corresponds to the mean value of the accepted Maxwellian PDF.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131997824","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
Novel fiber design with the characteristics similar to LEAF 新颖的纤维设计，具有与LEAF相似的特性
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.477820
R. Tewari, V. Tzolov, Z. Jakubczyk
{"title":"Novel fiber design with the characteristics similar to LEAF","authors":"R. Tewari, V. Tzolov, Z. Jakubczyk","doi":"10.1117/12.477820","DOIUrl":"https://doi.org/10.1117/12.477820","url":null,"abstract":"A novel fiber design has been proposed for a (+D) Non Zero Dispersion Shifted Fiber (NZDSF). The obtained characteristics of this fiber (such as Petermann II-Mode Field Diameter, Group Delay, Group Velocity Dispersion, Dispersion Slope, and Effective Area) are in good agreement with the commercially available (+D) NZDSF with the trade name LEAF.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129337241","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
Novel dynamical polarization mode dispersion emulator 新型动态极化模色散仿真器
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.474045
D. Waddy, Liang Chen, X. Bao
{"title":"Novel dynamical polarization mode dispersion emulator","authors":"D. Waddy, Liang Chen, X. Bao","doi":"10.1117/12.474045","DOIUrl":"https://doi.org/10.1117/12.474045","url":null,"abstract":"A novel polarization mode dispersion (PMD) emulator is presented which accurately follows the dynamics of PMD in field optical fiber. A modification on a dynamic mode coupling wave-plate model is presented to model the emulator. It is found that the emulator and model can accurately describe the dynamical behaviour of the state of polarization (SOP) and thus PMD in a fiber.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115878782","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
The role of electrostatic charge effect on the contamination of fiber optics connectors and the ways of eliminating it 介绍了静电电荷对光纤连接器污染的影响及其消除方法
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.475352
T. Berdinskikh, A. Fisenko, J. Daniel, J. Bragg, D. Phillips
{"title":"The role of electrostatic charge effect on the contamination of fiber optics connectors and the ways of eliminating it","authors":"T. Berdinskikh, A. Fisenko, J. Daniel, J. Bragg, D. Phillips","doi":"10.1117/12.475352","DOIUrl":"https://doi.org/10.1117/12.475352","url":null,"abstract":"The contamination of fiber optics connectors has recently been recognized as an industry wide problem. The contamination has resulted in degradation of optical signal performance, which creates false fails during the manufacturing process. These contaminated fiber optics connectors require additional manufacturing operations such as inspection of incoming components, cleaning process and re-inspection. The cleanliness of test connectors is also very important to ensure good product quality. The dirty connectors in the test environment create false functional failures at the board level, resulting in unnecessary and costly rework. All precautions have to be taken to identify the critical steps in the manufacturing process that cause the contamination to the component, assembly or board levels. The potential sources of contamination and the mechanisms of the transferring contamination have been analyzed.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117207723","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
Modulation formats for robust WDM 40 Gbit/s transmission systems 稳健WDM 40 Gbit/s传输系统的调制格式
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.479256
A. Hodžić, K. Petermann
{"title":"Modulation formats for robust WDM 40 Gbit/s transmission systems","authors":"A. Hodžić, K. Petermann","doi":"10.1117/12.479256","DOIUrl":"https://doi.org/10.1117/12.479256","url":null,"abstract":"In this paper the results of the numerical investigations for different modulation formats in 40 Gb/s based WDM transmission systems over standard single mode fiber (SSMF) are present. The aim of our works was a precise investigation of the transmission behavior of 40 Gb/s WDM systems considering different modulation formats in linear and nonlinear transmission regime. Thereby the maximum achievable spectral efficiency for each modulation format has been analysed.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126481976","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
Tapered hollow optical fibers with a xenon core For WDM applications 带氙芯的锥形空心光纤，用于波分复用应用
Applications of Photonic Technology Pub Date : 2003-02-17 DOI: 10.1117/12.473983
I. Arfaoui, M. Duguay, C. Lavoie, U. Trutschel, U. Langbein
{"title":"Tapered hollow optical fibers with a xenon core For WDM applications","authors":"I. Arfaoui, M. Duguay, C. Lavoie, U. Trutschel, U. Langbein","doi":"10.1117/12.473983","DOIUrl":"https://doi.org/10.1117/12.473983","url":null,"abstract":"We are studying the loss and the dispersion compensation properties of tapered silica capillary for applications in multiwavelength optical communications. The 40-micron Xenon core (1.000702 refractive index) is confined by a 22-mm wall thickness silica capillary. The wall presents Fabry-Perot resonances at 55-nm intervals in the 1500-nm band. With resonances as sharp as 1.5 nm such capillaries could serve as stable inexpensive fibered Fabry-Perot reference filters and also serve as chromatic dispersion compensators. Helium gas (1.000035 refractive index) surrounds the capillary. Extensive numerical simulations and experimental results show that including gases in the core and the external medium allows low-loss propagation of the power and support monomode guidance. This new structure will provide strong dispersion compensation for this device.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114080235","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
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