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Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共18条,第1-10条 帮助

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Convergence Rate for Discrete-Time Multiagent Systems With Time-Varying Delays and General Coupling Coefficients 期刊论文  OAI收割
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, 2016, 卷号: 27, 期号: 1, 页码: 178-189
作者:  
Chen, Yao;  Ho, Daniel W. C.;  Lu, Jinhu;  Lin, Zongli
  |  收藏  |  浏览/下载:25/0  |  提交时间:2018/07/30
Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文  OAI收割
Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China
作者:  
Liu Y.;  Liu Y.;  Qin L.;  Liu Y.;  Wang L.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
Based on the modified coupled-wave theory  the emission characteristics  including threshold gain  photon density distribution in the cavity  and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m  the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating  we can change the two coupling coefficients  which affect the emission characteristics. For an overall consideration  an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides  the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47%  respectively. 2010 SPIE.  
Methods for integrated simulation of high-precision space optomechanical systems (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
Dong W.; Guang J.; Hong-bo Y.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
Each disciplinary has its own modeling and analysis tools to solve its own specific field problems. In order to achieve integrated simulation of high precision space optical systems and predict optical performance respective to the mechanical and thermal loads  data must pass through different analysis tools. Simulation tools used in the thermal  structural and optical design process and the relationship among them were first depicted and the integrated simulation methods were described in detail. Zernike polynomial fitting methods and interpolating approaches were also demonstrated. Because of the orthogonality of Zernike polynomials  it was not probably used in some situations such as noncircular apertures and discrete data  and the coupling of Zernike polynomial coefficients and other methods were also introduced in the paper. The toolkit OMTIA (Optical  Mechanical and Thermal Integrated Analyzer) based on the methods was developed  which appears as an indispensable tool for engineering practice.  
A study of the optical and EPR spectra for Ni2+ ion at the Cd2+(II) site of CsCdCl3 crystal 期刊论文  OAI收割
Physica Status Solidi B-Basic Solid State Physics, 2007, 卷号: 244, 期号: 9, 页码: 3308-3312
W. L. Feng; X. X. Wu; W. C. Zheng
收藏  |  浏览/下载:24/0  |  提交时间:2012/04/13
Principle of cross coupling between vertical heat turbulent transport and vertical velocity and determination of cross coupling coefficient 期刊论文  iSwitch采集
ADVANCES IN ATMOSPHERIC SCIENCES, 2007, 卷号: 24, 期号: 1, 页码: 89-100
作者:  
Chen Jinbei;  Hu Yinqiao;  Zhang Lei
收藏  |  浏览/下载:23/0  |  提交时间:2019/10/08
Article I. Design for polymer vertical channel triple coupled microring resonators filter (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Communication, August 21, 2005 - August 26, 2005, Changshun, China
作者:  
Zhang D.;  Zhang D.;  Wang P.
收藏  |  浏览/下载:134/0  |  提交时间:2013/03/25
Calculations of the spin-lattice coupling coefficients F-ij and Z(ij) for MgO : Co2+ crystal 期刊论文  OAI收割
Communications in Theoretical Physics, 2001, 卷号: 36, 期号: 4, 页码: 487-490
W. C. Zheng; S. Y. Wu
收藏  |  浏览/下载:19/0  |  提交时间:2012/04/14
Tetragonal distortions of chlorine octahedra surrounding paramagnetic ions in the tetragonal phase of RbCdCl3 期刊论文  OAI收割
Physica B-Condensed Matter, 2001, 卷号: 301, 期号: 3-4, 页码: 186-189
W. C. Zheng; S. Y. Wu
收藏  |  浏览/下载:14/0  |  提交时间:2012/04/14
Local trigonal distortions of some paramagnetic impurity centers in ZnSiF6 center dot 6H(2)O crystal 期刊论文  OAI收割
Radiation Effects and Defects in Solids, 1997, 卷号: 140, 期号: 3-4, 页码: 329-334
W. C. Zheng
收藏  |  浏览/下载:19/0  |  提交时间:2012/04/14