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2010 Symposium on Photonics and Optoelectronics最新文献

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Modeling of Er³+-Ce³+-Doped Telluride Fiber Amplifier 掺Er³+-Ce³+碲化物光纤放大器的建模
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-07-08 DOI: 10.1109/SOPO.2010.5504319
Zhihong Chen, Kenan Zhou, Chun Jiang
{"title":"Modeling of Er³+-Ce³+-Doped Telluride Fiber Amplifier","authors":"Zhihong Chen, Kenan Zhou, Chun Jiang","doi":"10.1109/SOPO.2010.5504319","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504319","url":null,"abstract":"The rate and power evolution equations of erbium/cerium co-doped telluride fiber amplifier are proposed, solved numerically and compared with experiment data in literatures. With pump power of 130mW and fiber length of 12 cm, the internal gain of almost 30.0dB may be achieved in the amplifier.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121773598","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
Study on Wavelength-Tunable Photodetector with Surface Plasma Wave Excitation Filter 表面等离子体波激发滤波器波长可调光电探测器的研究
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-07-08 DOI: 10.1109/SOPO.2010.5504401
Yufeng Shang, Yongqing Huang, X. Duan, X. Ye, Hui Huang, Shiwei Cai, Qi Wang, X. Ren
{"title":"Study on Wavelength-Tunable Photodetector with Surface Plasma Wave Excitation Filter","authors":"Yufeng Shang, Yongqing Huang, X. Duan, X. Ye, Hui Huang, Shiwei Cai, Qi Wang, X. Ren","doi":"10.1109/SOPO.2010.5504401","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504401","url":null,"abstract":"Surface plasma wave excitation filters is used in the new photodetector in this paper. The detectivity is enhanced by excitation of surface plasma waves (SPWs) using a Metal Aperture Arrays grating. A bias-tunable broadband response is achieved.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116875308","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
Analysis of the Influence of External Refractive Index on Long-Period Fiber Grating Coupler 外折射率对长周期光纤光栅耦合器的影响分析
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-07-08 DOI: 10.1109/SOPO.2010.5504374
Shuihai Peng, Xiaojun Zhou, Chengjin Chen, Dong Liu, Yong Liu
{"title":"Analysis of the Influence of External Refractive Index on Long-Period Fiber Grating Coupler","authors":"Shuihai Peng, Xiaojun Zhou, Chengjin Chen, Dong Liu, Yong Liu","doi":"10.1109/SOPO.2010.5504374","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504374","url":null,"abstract":"The influence of external refractive index on long-period fiber grating coupler consisting of two parallel long-period fiber gratings is analyzed by coupled-mode theory considering three-layer geometry of the fiber. The self-scattering of guided mode and the shift of resonant wavelength caused by the core index modulation are taken into account for precise simulation. The variation of coupling coefficients, resonant wavelength, transmissivity and coupling efficiency are discussed respectively. Finally, the experiments are implemented with different external indexes which prove the validity of our model.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132892065","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
The Multi-Scale Spatial Pattern Recognition of Vegetation Based on Fractal Geometry 基于分形几何的植被多尺度空间模式识别
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504282
Jin-bao Liu, Zheng-wei He
{"title":"The Multi-Scale Spatial Pattern Recognition of Vegetation Based on Fractal Geometry","authors":"Jin-bao Liu, Zheng-wei He","doi":"10.1109/SOPO.2010.5504282","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504282","url":null,"abstract":"Spatial heterogeneity of the vegetative will appear new change and new feature when we observe it with different scale. In order to understand the vegetative pattern and dynamic state well and profoundly, we must take into account the characteristics which vary with the different scales. Fractal geometry is a feasible tool to solve the problem. The spatial distribution of the vegetation is a typical fractal object and show details in different scales. The fractal dimension always embodies self-similar characteristics which mean they don't change with the scales. Consequently, comparing the spatial pattern and the fractal dimension between different scales will make us understand the spatial pattern roundly. Based on regionalized variable theories, geo-statistics is one kind of spatial statistical theory used to explore the correlativity and dependence between spatial variables. The first character of this method is its emphasis on the importance of spatial dependence of variables. In practical research, semi-variance values of ecological factors or other indices can be calculated from the semi-variance formulate according to the theory, and then, semi-variogram can be drawn, distribution character of the vegetation (such as clumped or uniform pattern) can be found from the graph. Mathematical models simulation should be used in quantification of this character. In this paper, we take the vegetation of XINJIANG province for example. The fractal dimension was calculated by the double-logarithm semi-variogram. The lower the value of the fractal dimension is, the higher heterogeneity the distribution of vegetation has.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115159725","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
Collinear Surface Acoustic Wave Acousto-Electro-Optic Modulator in Ti:LiNbO3 Waveguide Ti:LiNbO3波导中的共线表面声波声光调制器
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1117/12.884941
Tao Liu, Kuanxin Yu
{"title":"Collinear Surface Acoustic Wave Acousto-Electro-Optic Modulator in Ti:LiNbO3 Waveguide","authors":"Tao Liu, Kuanxin Yu","doi":"10.1117/12.884941","DOIUrl":"https://doi.org/10.1117/12.884941","url":null,"abstract":"The structure of a collinear surface acoustic wave (CSAW) acousto-electro-optic (AEO) modulator is presented. SAW AEO Coupled wave equations are given. By solving these equations, conversion efficiency formula of CSAW AEO modulator is obtained. Conversion efficiency as the function of acoustic power density is presented in x-cut y-propagating lithium niobate substrate with a titanium in-diffused surface waveguide. Additional electro-optic port can change the center frequency of the modulator. Relationship between conversion efficiency and driving frequency is also presented. Potential applications of this work are discussed.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114652627","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
Optical Sensing Characteristics in a Transparent Al-Doped Zinc Oxide-Gated Al0.2Ga0.8As/In0.2Ga0.8As High Electron Mobility Transistor 透明掺铝氧化锌门控Al0.2Ga0.8As/In0.2Ga0.8As高电子迁移率晶体管的光学传感特性
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504370
Ching-Sung Lee, B. Chou, W. Hsu, S. Chu, D. Lin, C. Ho, Y. Lai, Shen-Han Yang, W. Chien
{"title":"Optical Sensing Characteristics in a Transparent Al-Doped Zinc Oxide-Gated Al0.2Ga0.8As/In0.2Ga0.8As High Electron Mobility Transistor","authors":"Ching-Sung Lee, B. Chou, W. Hsu, S. Chu, D. Lin, C. Ho, Y. Lai, Shen-Han Yang, W. Chien","doi":"10.1109/SOPO.2010.5504370","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504370","url":null,"abstract":"A three-terminal optical sensor by using an aluminum-doped zinc oxide (AZO)-gated Al0.2Ga0.8As /In0.2Ga0.8As high electron mobility transistor (AZO-HEMT) on a GaAs substrate is demonstrated in this report. Optical responses under illumination of different wavelengths are investigated, as compared to a conventional Au-gated HEMT device. Experimental results demonstrate that the present design is promising for tunable optical sensing applications.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116796576","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
Signal Evolution of Slow and Fast Light in Erbium Doped Fiber 掺铒光纤中快慢光的信号演化
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504361
Hao Wang, Chunguang Zhang
{"title":"Signal Evolution of Slow and Fast Light in Erbium Doped Fiber","authors":"Hao Wang, Chunguang Zhang","doi":"10.1109/SOPO.2010.5504361","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504361","url":null,"abstract":"Recently, researches about the controllable group velocity of light propagation had made many progresses. And several experiments had demonstrated the signal evolution of slow and fast light. In this letter, the authors described a simple experiment for the tracing of light signals in an erbium-doped optical fiber at the optical communication wavelength firstly. We have, directly, observed the evolution of slow and fast signals with different waveforms that travel in an erbium-doped fiber amplifier. Through tracing the signal evolution, when slow light (Vg<<c) or fast light (Vg<0) was got in it, we concluded that asymmetrical absorption and amplification on the periodical signal could account for the generation of slow and fast light in an erbium-doped fiber amplifier easily.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127330499","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 Optical Tweezers for the Operation of Particles 用于粒子操作的光纤镊子
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504267
Hao Zhou, G. Feng, Hao Yang, G. Deng, Hongyuan Ding
{"title":"Fiber Optical Tweezers for the Operation of Particles","authors":"Hao Zhou, G. Feng, Hao Yang, G. Deng, Hongyuan Ding","doi":"10.1109/SOPO.2010.5504267","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504267","url":null,"abstract":"We take example by the fabrication of nano-probe chemical etching process to make optical tapered fiber, and we use the semiconductor laser as the light source to design a single-fiber optical tweezers system, thus achieve the capture of yeast cells and the thrust of hollow glass beads. At the same time, we use FDTD method to simulate the force analysis of the yeast and hollow glass beads in Gaussian light field. The optical tweezers system has concise structure; the preparation of optical tweezers is simple and flexible. It's easy to achieve non-contact operation of biological cells, extended to the micro-operation of other particles and of some significance in materials and biological research field.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123322975","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: 4
Research of Distributed Optical Fiber Temperature Sensor (DTS) System with Optical Switch 带光开关的分布式光纤温度传感器系统研究
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504447
Jian-feng Wang, Yong-xing Jin, Zai-xuan Zhang, Changyu Shen, Y. Qiu
{"title":"Research of Distributed Optical Fiber Temperature Sensor (DTS) System with Optical Switch","authors":"Jian-feng Wang, Yong-xing Jin, Zai-xuan Zhang, Changyu Shen, Y. Qiu","doi":"10.1109/SOPO.2010.5504447","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504447","url":null,"abstract":"Working principle, engineering application and development trends of distributed optical fiber temperature sensor (DTS) system is introduced briefly in his paper. Factors determining length of sensing optical fiber is researched in particularly. In distributed optical fiber temperature sensor system, length of sensing optical fiber is determined by power of laser pulse, loss coefficient and signal to noise ratio (SNR) of the system. Using optical switch can extend sensing length of the system. A driver interface based on MCU chip for a multi-mode prism 1×2 optical switch is designed. DTS system controls the optical switch by sending instruction to RS232 serial interface. Test results shows that the sensing length can be extended to double by embedding 1×2 optical switch.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114139291","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
Applications of Raman Spectroscopy as an Non-Invasive Method in Pharmaceutical Analysis 拉曼光谱技术在药物分析中的应用
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504080
Zhen Tian, N. Bing, Ling-ling Wang, Li-li Xie, Li-jun Wang, Hao Yuan
{"title":"Applications of Raman Spectroscopy as an Non-Invasive Method in Pharmaceutical Analysis","authors":"Zhen Tian, N. Bing, Ling-ling Wang, Li-li Xie, Li-jun Wang, Hao Yuan","doi":"10.1109/SOPO.2010.5504080","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504080","url":null,"abstract":"Spatially Offset Raman Spectroscopy (SORS) and Transmission Raman Spectroscopy (TRS) are methods for analysing bulk turbidly scattering materials such as powders, tablets, suspensions and other chemical mixtures, and provides non-invasive measurements with high selectivity and sensitivity. They can be effectively used for non-invasive probing of the content of pharmaceutical capsules and tablet and provides an analytical technique ideally suited for fast on-line process control monitoring applications in pharmaceutical industry where rapid, chemically specific bulk analysis is required","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116743697","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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