Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230173
Yali Guo, Yan Han, Linmao Liu
This paper presents a non-contact automatic measurement system on geometry parameters in large-scale pipes based on laser displacement sensor. It resorts to the precise laser displacement technology, inside and outside dimension measurement, servocontrol technology and accurate signal procession, designs a testing system which can measure inside and outside diameter, roundness and other shape parameters. The system composing and principle are presented. The system error calibration and measurement precision are put forward. This system is validated by experiments. The system presented in this paper is adaptive to multi-parameter test for large-scale pipes and any other kinds of pipes.�
{"title":"A Measurement of Geometry Parameters in Large-Scale Pipes","authors":"Yali Guo, Yan Han, Linmao Liu","doi":"10.1109/SOPO.2009.5230173","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230173","url":null,"abstract":"This paper presents a non-contact automatic measurement system on geometry parameters in large-scale pipes based on laser displacement sensor. It resorts to the precise laser displacement technology, inside and outside dimension measurement, servocontrol technology and accurate signal procession, designs a testing system which can measure inside and outside diameter, roundness and other shape parameters. The system composing and principle are presented. The system error calibration and measurement precision are put forward. This system is validated by experiments. The system presented in this paper is adaptive to multi-parameter test for large-scale pipes and any other kinds of pipes.�","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"49 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78972026","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230123
C. Tsuei, Wen-Shing Sun
In this study we simulate the illuminance and efficiency of sunlight/LED hybrid illuminating system for indoor illumination. According to our calculation results of the examination of simulations and real situations, we find that the sunlight/LED hybrid illumination do perform better than LED or traditional lights. We are assured of the potential advantages of sunlight/LED hybrid illuminating system in the future.
{"title":"Simulating the Illuminance and Efficiency of Sunlight/LED Hybrid Illuminating System Used in Indoor Lighting Design","authors":"C. Tsuei, Wen-Shing Sun","doi":"10.1109/SOPO.2009.5230123","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230123","url":null,"abstract":"In this study we simulate the illuminance and efficiency of sunlight/LED hybrid illuminating system for indoor illumination. According to our calculation results of the examination of simulations and real situations, we find that the sunlight/LED hybrid illumination do perform better than LED or traditional lights. We are assured of the potential advantages of sunlight/LED hybrid illuminating system in the future.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78982814","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230079
Ming Liu, Y. Fan, Jian Ma, B. Zhang
Dynamic obtrusive light is one of latest light pollutions. In the general situation, the human eye can correctly observe and judge the outside things, such as the size, the shape, the color and so on. If the light color is much too complicated, the color area too small or the change of multicolor light too quick, the resolving capacity and the adaptive capacity of the human eye have a decrease. The impression investigation on dynamic lighting and static lighting was performed. The experiment lays emphasis on the influence of dynamic light pollution on visual perception of the general public by measuring subjects' contrast response under different experiment conditions. The influence of background brightness on subjects' disturbance was discussed and the correlation analysis was performed by SPSS. The results indicated that the flickers from some artistic lighting, such as the LED neon light, the stroboscopic light, laser, etc., result in light pollution. The dynamic light pollution can exert influences on the people’s psychology and emotion and even can cause the traffic accident and the visual damage. Keywords-dynamic light; investigation; obtrusive; psychology; emotion
{"title":"Investigation and Experiment of Dynamic Light Disturbance","authors":"Ming Liu, Y. Fan, Jian Ma, B. Zhang","doi":"10.1109/SOPO.2009.5230079","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230079","url":null,"abstract":"Dynamic obtrusive light is one of latest light pollutions. In the general situation, the human eye can correctly observe and judge the outside things, such as the size, the shape, the color and so on. If the light color is much too complicated, the color area too small or the change of multicolor light too quick, the resolving capacity and the adaptive capacity of the human eye have a decrease. The impression investigation on dynamic lighting and static lighting was performed. The experiment lays emphasis on the influence of dynamic light pollution on visual perception of the general public by measuring subjects' contrast response under different experiment conditions. The influence of background brightness on subjects' disturbance was discussed and the correlation analysis was performed by SPSS. The results indicated that the flickers from some artistic lighting, such as the LED neon light, the stroboscopic light, laser, etc., result in light pollution. The dynamic light pollution can exert influences on the people’s psychology and emotion and even can cause the traffic accident and the visual damage. Keywords-dynamic light; investigation; obtrusive; psychology; emotion","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"21 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87783366","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230310
Wen Chen, P. Shi, Z. Hua, Long Li, Ansheng Gan
Based on analytical theory, distributions of temperature field and thermal distortion field in a rectangular Nd:YVO4 crystal double-side-pumped by LD are investigated. Through the analysis of working characteristics of Nd:YVO4 crystal, a thermal model that matches actual situations of Nd:YVO4 crystal is established. General expressions of temperature field and thermal distortion field in Nd:YVO4 crystal are obtained. And two methods of effectively reducing thermal distortion in Nd:YVO4 crystal are put forward. Results show that a maximum temperature rise of 362.2°C and a maximum thermal distortion of 5.55 μm are obtained in Nd:YVO4 crystal when the output power of the two laser diodes used to pump the Nd:YVO4 crystal are both 30 W. When the off- center distance is 0.6mm, the maximum thermal distortion can be reduced by37.7%; when the thickness of the crystal is reduced by 30%, the maximum thermal distortion can be reduced by 31.7%. Results in this paper can offer theoretical base for better solving thermal problems in laser system.
{"title":"Thermal Analysis of Rectangular Nd:YVO4 Crystal Double-Side-Pumped by LD","authors":"Wen Chen, P. Shi, Z. Hua, Long Li, Ansheng Gan","doi":"10.1109/SOPO.2009.5230310","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230310","url":null,"abstract":"Based on analytical theory, distributions of temperature field and thermal distortion field in a rectangular Nd:YVO4 crystal double-side-pumped by LD are investigated. Through the analysis of working characteristics of Nd:YVO4 crystal, a thermal model that matches actual situations of Nd:YVO4 crystal is established. General expressions of temperature field and thermal distortion field in Nd:YVO4 crystal are obtained. And two methods of effectively reducing thermal distortion in Nd:YVO4 crystal are put forward. Results show that a maximum temperature rise of 362.2°C and a maximum thermal distortion of 5.55 μm are obtained in Nd:YVO4 crystal when the output power of the two laser diodes used to pump the Nd:YVO4 crystal are both 30 W. When the off- center distance is 0.6mm, the maximum thermal distortion can be reduced by37.7%; when the thickness of the crystal is reduced by 30%, the maximum thermal distortion can be reduced by 31.7%. Results in this paper can offer theoretical base for better solving thermal problems in laser system.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"65 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83391952","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230326
Yanling Han, Hong Wang, Liping Yu
The band structure of one-dimensional complex photonic crystals composed of anisotropic media is computed and analyzed using a 4 4× transfer matrix method. The overlapping of band structure has been investigated in detail. Numerical results indicate that through altering the relative orientation of the optical axes of the adjacent layers, it is possible to adjust and extend bandgap of the photonic band structure. Keywordsphotonic crystal; anisotropy; 4 4 × transfer matrix method
{"title":"Manipulating Overlapping of Bangap in One-Dimensional Complex Photonic Crystal Composed of Anisotropic Material","authors":"Yanling Han, Hong Wang, Liping Yu","doi":"10.1109/SOPO.2009.5230326","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230326","url":null,"abstract":"The band structure of one-dimensional complex photonic crystals composed of anisotropic media is computed and analyzed using a 4 4× transfer matrix method. The overlapping of band structure has been investigated in detail. Numerical results indicate that through altering the relative orientation of the optical axes of the adjacent layers, it is possible to adjust and extend bandgap of the photonic band structure. Keywordsphotonic crystal; anisotropy; 4 4 × transfer matrix method","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"5 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87341334","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230168
Caixia Wang
The measuring principle of laser beam quality analyzer was introduced and described in detail in the paper, which also discussed the step motor control system's action in the system. It was shown how to choose the type of motor according to the application circumstance and parameters. In order to make sure the position of sampling points for the charge couple device, the paper used AVR single-chip microcomputer whose model number is Mega16L as the central processing unit, chose high rotation torque step motor whose model number is 42BYG1.8 produced by the company called AKS as executive body to control the ball screw to make one-dimension rectilinear motion. Experiments showed that the system's locating precision satisfied the testing demand; the error caused by the step motor was less than 0.03%. System designed by the paper had characteristics such as smooth running and high reliability.
{"title":"Design on Driving and Control System of Step Motor in the Laser Quality Analyzing System","authors":"Caixia Wang","doi":"10.1109/SOPO.2009.5230168","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230168","url":null,"abstract":"The measuring principle of laser beam quality analyzer was introduced and described in detail in the paper, which also discussed the step motor control system's action in the system. It was shown how to choose the type of motor according to the application circumstance and parameters. In order to make sure the position of sampling points for the charge couple device, the paper used AVR single-chip microcomputer whose model number is Mega16L as the central processing unit, chose high rotation torque step motor whose model number is 42BYG1.8 produced by the company called AKS as executive body to control the ball screw to make one-dimension rectilinear motion. Experiments showed that the system's locating precision satisfied the testing demand; the error caused by the step motor was less than 0.03%. System designed by the paper had characteristics such as smooth running and high reliability.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"6 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79579363","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230071
Huaxi Gu, Jiang Xu
Optical network on chip is an emerging research topic, which can provide low latency and high bandwidth with significantly lower power dissipation. A 3D mesh based optical network on chip is developed together with a new optical router architecture as the basic units. The new router fully utilizes the properties of dimension order routing in 3D mesh networks, and reduce the number of microresonators required for ONoCs. We compared the loss property of the new router with four other schemes. The results show that the new router achieves the lowest loss for the longest path in the network of the same size. The proposed 3D mesh ONoC is compared with 2D counterpart in three aspects, i.e. energy, latency and throughput. The comparison of power consumption with electronic and 2D counterpart show that 3D ONoC can save about 79.9% energy compared to electronic one, 24.3% energy to the 2D ONoC, all containing 512 IP cores. The simulation of the network performance of the 3D mesh ONoC is carried out by OPNET under different configurations. The results also show the performance improvement over the 2D ONoC.
{"title":"Design of 3D Optical Network on Chip","authors":"Huaxi Gu, Jiang Xu","doi":"10.1109/SOPO.2009.5230071","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230071","url":null,"abstract":"Optical network on chip is an emerging research topic, which can provide low latency and high bandwidth with significantly lower power dissipation. A 3D mesh based optical network on chip is developed together with a new optical router architecture as the basic units. The new router fully utilizes the properties of dimension order routing in 3D mesh networks, and reduce the number of microresonators required for ONoCs. We compared the loss property of the new router with four other schemes. The results show that the new router achieves the lowest loss for the longest path in the network of the same size. The proposed 3D mesh ONoC is compared with 2D counterpart in three aspects, i.e. energy, latency and throughput. The comparison of power consumption with electronic and 2D counterpart show that 3D ONoC can save about 79.9% energy compared to electronic one, 24.3% energy to the 2D ONoC, all containing 512 IP cores. The simulation of the network performance of the 3D mesh ONoC is carried out by OPNET under different configurations. The results also show the performance improvement over the 2D ONoC.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"37 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90859286","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230108
Bo He, Q. Zhong, Xu Jing, Lei Zhao, Feng Li, Cheng Shen, N. Zhang, ZhengShan Yu, Yanting Yin
A novel ITO/SiO2/np Silicon SINP violet and blue enhanced photovoltaic device has been fabricated by thermal diffusion of phosphorus for shallow junction to enhance the spectral responsivity within the wavelength range of 400-600nm, low temperature thermally grown an ultrathin silicon dioxide and RF sputtering ITO antireflection coating to reduce the reflected light and enhance the sensitivity. The current-voltage (I-V) characteristics, spectral response and responsivity of high quantum efficiency of violet SINP photovoltaic device and deep junction SINP photovoltaic device were calculated and analyzed in detail. Keywords— ITO; SINP photovoltaic device; current-voltage(I-V) characteristics; spectral response; responsivity
{"title":"A Novel Violet and Blue Enhanced SINP Silicon Photovoltaic Device","authors":"Bo He, Q. Zhong, Xu Jing, Lei Zhao, Feng Li, Cheng Shen, N. Zhang, ZhengShan Yu, Yanting Yin","doi":"10.1109/SOPO.2009.5230108","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230108","url":null,"abstract":"A novel ITO/SiO2/np Silicon SINP violet and blue enhanced photovoltaic device has been fabricated by thermal diffusion of phosphorus for shallow junction to enhance the spectral responsivity within the wavelength range of 400-600nm, low temperature thermally grown an ultrathin silicon dioxide and RF sputtering ITO antireflection coating to reduce the reflected light and enhance the sensitivity. The current-voltage (I-V) characteristics, spectral response and responsivity of high quantum efficiency of violet SINP photovoltaic device and deep junction SINP photovoltaic device were calculated and analyzed in detail. Keywords— ITO; SINP photovoltaic device; current-voltage(I-V) characteristics; spectral response; responsivity","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"1 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78026741","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230152
A. Xu, Jia-bi Chen, Wangcheng
For the early diagnosis and treatment of female breast diseases, the breast diseases diagnosis instrument based on spatial resolution near-infrared spectroscopy technology was invented. Meanwhile, an experiment is carried out to test the effectiveness and efficiency of the new instrument. In the experiment, the diagnosing results of thirty-four volunteers are obtained from the instrument, which show 95.45% specificity, 66.67% sensitivity and a coincidence rate of 85.29%. Keywords-spectrum; near infrared; breast disease; early diagnosis
{"title":"Investigation of Breast Disease Early Diagnosis Using Spatial Near-Infrared Spectroscopy","authors":"A. Xu, Jia-bi Chen, Wangcheng","doi":"10.1109/SOPO.2009.5230152","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230152","url":null,"abstract":"For the early diagnosis and treatment of female breast diseases, the breast diseases diagnosis instrument based on spatial resolution near-infrared spectroscopy technology was invented. Meanwhile, an experiment is carried out to test the effectiveness and efficiency of the new instrument. In the experiment, the diagnosing results of thirty-four volunteers are obtained from the instrument, which show 95.45% specificity, 66.67% sensitivity and a coincidence rate of 85.29%. Keywords-spectrum; near infrared; breast disease; early diagnosis","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"9 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78191710","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}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230212
Qianghua Li, Chun-Xia Liu, Hua Li, Tailong Sun
A full-vector effective refractive index model is used to analyze the influence of the nonlinear coefficient and dispersion property on the structural parameters of photonic crystal fiber (PCF). It is possible to design dispersion compensating PCF flexibly with high dispersion value, negative dispersion slope and lower nonlinear coefficient around 1550 nm. Simulation and analysis show that highly nonlinear PCF provides great potential value as dispersion compensation fiber. Keywordsfiber optics; nonlinearity; dispersion compensation; nonlinear coefficient; photonic crystal fiber
{"title":"Research on Dispersion Compensating Property and Nonlinear Coefficient of Photonic Crystal Fiber","authors":"Qianghua Li, Chun-Xia Liu, Hua Li, Tailong Sun","doi":"10.1109/SOPO.2009.5230212","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230212","url":null,"abstract":"A full-vector effective refractive index model is used to analyze the influence of the nonlinear coefficient and dispersion property on the structural parameters of photonic crystal fiber (PCF). It is possible to design dispersion compensating PCF flexibly with high dispersion value, negative dispersion slope and lower nonlinear coefficient around 1550 nm. Simulation and analysis show that highly nonlinear PCF provides great potential value as dispersion compensation fiber. Keywordsfiber optics; nonlinearity; dispersion compensation; nonlinear coefficient; photonic crystal fiber","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"26 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75443169","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}
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