A 16-bit 5.6-MHz clock-rate digital to analog converter (DAC) achieves 96-dB signal-to-noise rate (SNR) in the 22-KHz band. The optimal canonic signed digit (OCSD) code is proposed in a multi-stage interpolator filter to achieve less hardware consumption. A third-order cascade-of-resonators feed-forward (CRFF) with zero optimization Delta-Sigma modulator has been developed to convert an oversampled digital signal into 1-bit code. A switch-capacitor (SC) analog filter is used to reconstruct the analog signal.
{"title":"16-bit Delta-Sigma DAC with cascade-of-resonators feed-forward modulator and interpolation filter with OCSD code","authors":"Yongsheng Wang, Mengye Cai, Yonglai Zhang, Mingyan Yu","doi":"10.1109/ICOOM.2012.6316319","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316319","url":null,"abstract":"A 16-bit 5.6-MHz clock-rate digital to analog converter (DAC) achieves 96-dB signal-to-noise rate (SNR) in the 22-KHz band. The optimal canonic signed digit (OCSD) code is proposed in a multi-stage interpolator filter to achieve less hardware consumption. A third-order cascade-of-resonators feed-forward (CRFF) with zero optimization Delta-Sigma modulator has been developed to convert an oversampled digital signal into 1-bit code. A switch-capacitor (SC) analog filter is used to reconstruct the analog signal.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123119845","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316295
Lirong Zhao, Wei Zhu, Yaoyu Zhang, Junxi Sun
The system error of photoelectric theodolite includes Visual axis error, horizontal axis error, vertical axis error, Azimuth orientation error, elevation zero error; This paper ratiocinates the formula of Azimuth orientation error, elevation zero error and Visual axis error of Photoelectric theodolite of T type by triangle relation in space. Photoelectric theodolite of U type with main visual axis and auxiliary visual axis shoots images and inverse images of marks to obtain system error data. Error is less than 0.4 second by comparing error data of auxiliary visual axis with error data of main visual axis and the precision of two methods is identical. It has been validated that the method of error measurement of photoelectric theodolite of T type is right.
{"title":"The method of the system error modification Of photoelectric theodolite of T type","authors":"Lirong Zhao, Wei Zhu, Yaoyu Zhang, Junxi Sun","doi":"10.1109/ICOOM.2012.6316295","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316295","url":null,"abstract":"The system error of photoelectric theodolite includes Visual axis error, horizontal axis error, vertical axis error, Azimuth orientation error, elevation zero error; This paper ratiocinates the formula of Azimuth orientation error, elevation zero error and Visual axis error of Photoelectric theodolite of T type by triangle relation in space. Photoelectric theodolite of U type with main visual axis and auxiliary visual axis shoots images and inverse images of marks to obtain system error data. Error is less than 0.4 second by comparing error data of auxiliary visual axis with error data of main visual axis and the precision of two methods is identical. It has been validated that the method of error measurement of photoelectric theodolite of T type is right.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116758275","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}
Circle polarization shift keying (CPolSK) is a new modulation technique. It uses the state of polarization of an electromagnetic wave carrier as the information bearing parameter. This paper describes a modulation/demodulation method based on CPolSK with balance detection, and verifies its feasibility through theoretical analysis and computer simulation. Studies have shown that the optical system based on CPolSK techniques has unique advantages, such as in anti-atmospheric interference, higher data rate and lower bit error rate, greatly improving the reliability of communication. In the future, the PolSK technique has a broad space for development and application prospects in the space laser communications.
{"title":"Circle polarization shift keying with balance detection for atmospheric laser communication","authors":"Dan Liu, Zhi Liu, Puyao Wang, Q. Fu, Jianhua Liu, Xin Zhou","doi":"10.1109/ICOOM.2012.6316274","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316274","url":null,"abstract":"Circle polarization shift keying (CPolSK) is a new modulation technique. It uses the state of polarization of an electromagnetic wave carrier as the information bearing parameter. This paper describes a modulation/demodulation method based on CPolSK with balance detection, and verifies its feasibility through theoretical analysis and computer simulation. Studies have shown that the optical system based on CPolSK techniques has unique advantages, such as in anti-atmospheric interference, higher data rate and lower bit error rate, greatly improving the reliability of communication. In the future, the PolSK technique has a broad space for development and application prospects in the space laser communications.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124936266","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316328
Xiaowei Liu, Liangliang Zhao, Q. Fu, Yuan Yuan
This paper adopts single-stage amplifier and exponential gain control circuit to achieve gain variation. The single-stage amplifier uses improved Gilbert to increase the gain and bandwidth, and reduce the power consumption and voltage redundancy. The exponential gain control circuit based on corrected exponential function to approach ideal exponential function, and supply wide control voltage range. This paper based on 0.5μm CMOS process library, using Hspice and Cadence software to design and simulate the VGA. The system works at the 5V supply voltage, and when load capacitance is taken 5pF, the simulation results show that the VGA has 3MHz bandwidth, non-distortion control voltage range is 2.2V~2.7V, IIP3 is 11 dBm, gain dynamic range can reach -40dB~30dB. High gain dynamic range and high control voltage range are achieved in the paper.
{"title":"MOS variable gain amplifier for quartz gyroscope driving","authors":"Xiaowei Liu, Liangliang Zhao, Q. Fu, Yuan Yuan","doi":"10.1109/ICOOM.2012.6316328","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316328","url":null,"abstract":"This paper adopts single-stage amplifier and exponential gain control circuit to achieve gain variation. The single-stage amplifier uses improved Gilbert to increase the gain and bandwidth, and reduce the power consumption and voltage redundancy. The exponential gain control circuit based on corrected exponential function to approach ideal exponential function, and supply wide control voltage range. This paper based on 0.5μm CMOS process library, using Hspice and Cadence software to design and simulate the VGA. The system works at the 5V supply voltage, and when load capacitance is taken 5pF, the simulation results show that the VGA has 3MHz bandwidth, non-distortion control voltage range is 2.2V~2.7V, IIP3 is 11 dBm, gain dynamic range can reach -40dB~30dB. High gain dynamic range and high control voltage range are achieved in the paper.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125577721","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316331
Yuhe Li, Yanxiang Chen, Xiaogen Hu
Micro-displacement devices, especially nano-scale actuators based on the inverse piezoelectric effect of piezoelectric ceramic are widely used. In Atomic Force Microscope (AFM) nano-level lateral resolution of probe or sample micro-displacement can be achieved using piezoelectric actuator stage. However, significant accuracy reduction is brought about by nonlinearity and multiple-value characteristics of piezoceramic hysteresis. In order to enhance the resolution of AFM system, the modeling of piezoelectric hysteresis using BP neural-network is presented in this paper based on the central symmetry characteristics, and the model parameters are gained by means of neural network training, then a Single-Input-Multiple-Output (SIMO) control method of piezoelectric ceramic is constructed. Based on the SIMO control model the open-loop tracking control experiment for piezoelectric ceramic is performed, and the tracking control error is between -47nm and 63nm. The experiment results show that the control model has the advantages of high open-loop tracking accuracy and anti-interference capability.
{"title":"Modeling and SIMO controlling of piezoceramic hysteresis","authors":"Yuhe Li, Yanxiang Chen, Xiaogen Hu","doi":"10.1109/ICOOM.2012.6316331","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316331","url":null,"abstract":"Micro-displacement devices, especially nano-scale actuators based on the inverse piezoelectric effect of piezoelectric ceramic are widely used. In Atomic Force Microscope (AFM) nano-level lateral resolution of probe or sample micro-displacement can be achieved using piezoelectric actuator stage. However, significant accuracy reduction is brought about by nonlinearity and multiple-value characteristics of piezoceramic hysteresis. In order to enhance the resolution of AFM system, the modeling of piezoelectric hysteresis using BP neural-network is presented in this paper based on the central symmetry characteristics, and the model parameters are gained by means of neural network training, then a Single-Input-Multiple-Output (SIMO) control method of piezoelectric ceramic is constructed. Based on the SIMO control model the open-loop tracking control experiment for piezoelectric ceramic is performed, and the tracking control error is between -47nm and 63nm. The experiment results show that the control model has the advantages of high open-loop tracking accuracy and anti-interference capability.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128721763","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316289
Ke-yan Dong, Yansong Song, S. Tong, Huilin Jiang
The in-field evaluation and validation of Semi-active laser guided weapons can be achieved by the laser target simulator. The composition and operation principle of the laser target simulator based on the transmissive structure are described in this paper, and the key instruction focus on the optical system parameters which the system required. The optical system is designed using to simulate the changes of the spot size, and the projection system is designed using to simulate the far-field target under the near-field conditions. The result shows that the spot simulated in optical system can achieve the ranges of 0.1mm ~ 18mm; the focal length of the projection system is 200mm, and the F number is 1.25, the MTF value is greater than 0.1 at the spatial frequency of 10 lp/mm under the condition of the exit pupil distance of 600mm, which satisfied the practical test requirements.
{"title":"The optical system design of transmissive laser target simulator","authors":"Ke-yan Dong, Yansong Song, S. Tong, Huilin Jiang","doi":"10.1109/ICOOM.2012.6316289","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316289","url":null,"abstract":"The in-field evaluation and validation of Semi-active laser guided weapons can be achieved by the laser target simulator. The composition and operation principle of the laser target simulator based on the transmissive structure are described in this paper, and the key instruction focus on the optical system parameters which the system required. The optical system is designed using to simulate the changes of the spot size, and the projection system is designed using to simulate the far-field target under the near-field conditions. The result shows that the spot simulated in optical system can achieve the ranges of 0.1mm ~ 18mm; the focal length of the projection system is 200mm, and the F number is 1.25, the MTF value is greater than 0.1 at the spatial frequency of 10 lp/mm under the condition of the exit pupil distance of 600mm, which satisfied the practical test requirements.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129635005","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316264
Yining Mu, He Wang
This paper discusses a new method of measuring incremental angle, which uses an arranged matrix of a narrow slit photoelectric cell according to certain logic phase combination replacing the fixed grating in the grating pair. The measuring operation can be accomplished by the coordination to replace between the coder disk and the arranged matrix of the narrow slit photoelectric cell. Thus, there is no need of considering the gap between the slit and the coder disk. The sensibility of the incremental photoelectric encoder to the vibration and the precision requirements of the spars are deduced. Thus the contrast degree of the Moors fringes is enhanced, the subdivision precision is increased and finally the measuring precision and the Stability are all increased.
{"title":"Study on technique of measuring single grating incremental angle","authors":"Yining Mu, He Wang","doi":"10.1109/ICOOM.2012.6316264","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316264","url":null,"abstract":"This paper discusses a new method of measuring incremental angle, which uses an arranged matrix of a narrow slit photoelectric cell according to certain logic phase combination replacing the fixed grating in the grating pair. The measuring operation can be accomplished by the coordination to replace between the coder disk and the arranged matrix of the narrow slit photoelectric cell. Thus, there is no need of considering the gap between the slit and the coder disk. The sensibility of the incremental photoelectric encoder to the vibration and the precision requirements of the spars are deduced. Thus the contrast degree of the Moors fringes is enhanced, the subdivision precision is increased and finally the measuring precision and the Stability are all increased.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123233203","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316284
Yuan Hu, Huilin Jiang, Fu Yuegang
As the integration of high precision optical system, the space laser communication system has many indexes reaching or close to the diffraction limit. Because the system is working in near space environment, which is quite different to the ground, the optical system quality needs to be evaluated in the severe environment. This paper, taking space laser communication optical system as an example, using software to simulate and analyze the temperature and the pressure of environmental adaptability, and draws a conclusion. That is, the near space environment has a effect on the space laser communication optical system, and the effect can be reduced by adjustment in design and assembly or mitigating temperature controller.
{"title":"Environmental adaptability analysis of near space laser communication optical system","authors":"Yuan Hu, Huilin Jiang, Fu Yuegang","doi":"10.1109/ICOOM.2012.6316284","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316284","url":null,"abstract":"As the integration of high precision optical system, the space laser communication system has many indexes reaching or close to the diffraction limit. Because the system is working in near space environment, which is quite different to the ground, the optical system quality needs to be evaluated in the severe environment. This paper, taking space laser communication optical system as an example, using software to simulate and analyze the temperature and the pressure of environmental adaptability, and draws a conclusion. That is, the near space environment has a effect on the space laser communication optical system, and the effect can be reduced by adjustment in design and assembly or mitigating temperature controller.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123391044","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316296
Weida Liu, Lixin Meng, Y. Li, Lizhong Zhang
This paper indicates a fully optical acquisition way which can build up linkage of ground laser communication in short distance, depicts the configuration and function process of acquisition system and discusses important parameters of acquisition process: communication distance, beam divergence angularity, the relation of acquisition time and maximum scan velocity. As a result, 5Km communication distance can be achieved; acquisition time is less than 100s, when horizontal beam divergence angularity is higher than 1mrad.
{"title":"The analysis of major parameters in short distance fully optical acquisition of ground laser communication","authors":"Weida Liu, Lixin Meng, Y. Li, Lizhong Zhang","doi":"10.1109/ICOOM.2012.6316296","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316296","url":null,"abstract":"This paper indicates a fully optical acquisition way which can build up linkage of ground laser communication in short distance, depicts the configuration and function process of acquisition system and discusses important parameters of acquisition process: communication distance, beam divergence angularity, the relation of acquisition time and maximum scan velocity. As a result, 5Km communication distance can be achieved; acquisition time is less than 100s, when horizontal beam divergence angularity is higher than 1mrad.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121506111","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 : 2012-10-02DOI: 10.1109/ICOOM.2012.6316208
Bo Wang, Zhipengwei, Mei Li, X. Fang, Rui Deng, Xian Gao, Y. Zou, P. Lu, Guojun Liu, Xiao-hui Ma
In the paper, Te-doped n type GaSb was passivated by (NH4)2S, the optical and surface properties of passivated GaSb were investigated by PL and AFM. After passivation treatment, the luminescence intensity of GaSb was enhanced. The passivation time would also affect luminescence intensity and the surface smooth of GaSb.
{"title":"The enhanced optical property of chemical passivated n type GaSb","authors":"Bo Wang, Zhipengwei, Mei Li, X. Fang, Rui Deng, Xian Gao, Y. Zou, P. Lu, Guojun Liu, Xiao-hui Ma","doi":"10.1109/ICOOM.2012.6316208","DOIUrl":"https://doi.org/10.1109/ICOOM.2012.6316208","url":null,"abstract":"In the paper, Te-doped n type GaSb was passivated by (NH4)2S, the optical and surface properties of passivated GaSb were investigated by PL and AFM. After passivation treatment, the luminescence intensity of GaSb was enhanced. The passivation time would also affect luminescence intensity and the surface smooth of GaSb.","PeriodicalId":129625,"journal":{"name":"2012 International Conference on Optoelectronics and Microelectronics","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124142066","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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