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	Structural amelioration of 920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Energy, Environment and Sustainable Development, EESD 2012, October 12, 2012 - October 14, 2012, Jilin, China 作者: Liu Y.; Liu Y.; Wang L.; Wang L.; Wang L. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 920 nm optically pumped semiconductor vertical external-cavity surface emitting laser (OPS-VECSEL) has an important application in laser display. We constructed and optimized a 920 nm OPS-VECSEL with active region of In0.09Ga0.91As quantum well (QW) system pumped by 808 nm laser diode module. By the finite element method self-consistent solutions of the semiconductor electronic and optical equations are realized to calculate the characteristics parameters of OPS-VECSEL. The performances of device especially the mode the threshold and the optical-optical translation efficiency were analyzed by dealing with different number of QWs (1 2 and 3) in one period QW depth barrier width the component and dimension of the non-absorption layer. We chose an improved structure of them. On this basis we ameliorated the number of QW periods and the simulation showed that in order to obtain high performance device the choice of the number of QW periods must be cautious. (2013) Trans Tech Publications Switzerland.
	MAC protocol with dynamic priority adjustment for light trail networks (EI CONFERENCE) 会议论文 OAI收割 Network Architectures, Management, and Applications VIII, December 8, 2010 - December 12, 2010, Shanghai, China 作者: Fang W.; Li S. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 In order to improve the wavelength utilization as well as the fairness of the light trail networks we modified the FP MAC from the view point of weight balance by introducing a weight mode. The weight mode is composed of two factors real-time factor and node activity ratio. Moreover the weight mode is used as a bid by each LT node to compute the priority. Hence the priority of the LT node is adjusted dynamically in every round and the MAC protocol with dynamic priority adjustment is entitled as DPA MAC. Simulation results show that the performances of DPA MAC protocol are much better than that of FP MAC protocol in terms of packet loss rate and activity percentile. 2011 Copyright SPIE - The International Society for Optical Engineering.
	Design of VxWorks-based software architecture for space optical remote sensor (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China Tao Y.; Song K. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 In order to satisfy requirements of real time and parallel control for the space optical remote sensor and implement the high integration of software a kind of VxWorks-based multitask software architecture was put forward. Firstly the technological requirements of optical remote sensor were analyzed in detail and functions and performances of the optical remote sensor were fixed. Task that was based on each function of optical remote sensor was compartmentalized. Then software architecture of optical remote sensor was designed. Finally experiments were carried out and results verified the accuracy and feasibility of the software architecture. Test results showed that the software architecture satisfied the requirements of real time and parallel control for the space optical remote sensor its functions and performances met the system design target perfectly and the software architecture was applicable to the engineering application of space instrument. 2011 IEEE.
	The design of missile's dome that fits both optical and aerodynamic needs (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：14/0 \| 提交时间：2013/03/25 Optical guidance missiles requires a dome which fits both optical and aerodynamic needs when they attack at 3 Ma. In this study ellipse is the figure chosen to be the dome's shape. The ellipticity is the main variable should to be decided. The optimized function was built by optical and aerodynamic performance function multiply by their weights. The optical and aerodynamic functions were all obtained by computational fluid dynamic (CFD) simulation's results after normalization. In this study the optical and aerodynamic performances have equal weights after optimzing the ellipticity is 2 for the missile. 2010 SPIE.
	Optical system of large relative aperture and wide field using aspheric corrector for detecting (EI CONFERENCE) 会议论文 OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China 作者: Zhang J.; Zhang J.; Zhang J.; Wang J. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 The magnitude requirement of space target detecting determines that the image of detecting telescope should have several performances: small spots the wider field of view small 80% encircled energy diameter and good MTF(Modulation transfer function). So the aperture and field of view of optical system have some demands accordingly. The larger aperture the more extensive range which the telescope searches. Now most of ground telescopes whose apertures are from 500mm to 1000mm is on-axis optical system the more energy that telescope collects and higher magnitude the telescope detects so wide field of view becomes the most importance problem. To obtain large relative aperture and wide field of view the paper introduces a catadioptric telescope with small aperture aspheric refractive corrector whose conic surface will be used to remove the aberrations due to large relative aperture and wide field of view. As to the optical system there is only one aspheric refractive corrector and it is relatively easy for manufacturing because of its concave figure and normal material. The paper gives the example and optimizes this optical system with ZEMAX program. And then the paper provides a specific analysis program for testing the aspheric refractive corrector. The aperture of this optical system is 750mm and its relative aperture is 0.82 and the field of view is 3.6 diameter(diagonal). Its structure is simple and the image quality is also very good. 2009 SPIE.
	High-fidelity replication of Dammann gratings using soft lithography 期刊论文 OAI收割 appl. optics, 2008, 卷号: 47, 期号: 10, 页码: 1427, 1429 Wang Wei; 周常河; Jia Wei 收藏 \| 浏览/下载：1069/158 \| 提交时间：2009/09/18 Dammann gratings Diffraction imaging Grating structures High throughputs High-fidelity Light intensities Low costs Optical performances Soft-lithography Surface reliefs UV-curable
	基于RS编码及网格编码调制的光PPM通信纠错技术期刊论文 OAI收割光子学报, 2008, 卷号: 37, 期号: 7, 页码: 1361, 1364 梁波; 陈卫标收藏 \| 浏览/下载：1039/159 \| 提交时间：2009/09/18 空间光通信 Communication performances RS纠错码 Effective communications TCM技术 External code PPM调制 Numerical simulations Optical channels Optical communication systems Optical- PPM modulation Reed-Solomon code RS coding Space optical communication TCM Trellis code modulations Trellis-code modulation
	Integrated mach-zehnder micro-interferometer for gas trace remote sensing (EI CONFERENCE) 会议论文 OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者: Wang P. 收藏 \| 浏览/下载：43/0 \| 提交时间：2013/03/25 The realisation process and the preliminary tests on the performances of an integrated Mach-Zehnder Interferometer on LiNbO3 (Lithium Niobate) substrate is presented. The microsystem has been obtained by using medium mass Ion Implantation on X-cut Lithium Niobate crystals. The interferometer is formed by integrated optical channel waveguides: the phase shift between the two optical paths has been obtained 1mm 2 cross section and weights a few grams. The power consumption is in the milliwatt range. In the present work results obtained in the spectral window (0.4m-1.1m) will be presented. The performance of the device without moving parts evaluated on standard radiation sources by applying a suitable electric field. The whole device is 60mm long demonstrates that a spectral resolution better than 0.3nm can be obtained on 400nm spectral windows. The Micro-interferometer has been tested in laboratory with a calibrated cell containing NO2 gas and has demonstrated sensitivity in the ppb range if suitable optical paths are used. Its reduced dimensions and weights make these micro-systems ideal for a wide range of applications has a 0.57times spanning from Space Technology Earth observation for Environment monitoring to Safety and Security applications.
	Holographic polymer Bragg gratings for dense wavelength division multiplexing at 1550nm (EI CONFERENCE) 会议论文 OAI收割 Holography, Diffractive Optics, and Applications II, November 8, 2004 - November 11, 2004, Beijing, China 作者: Wang W.; Wang W. 收藏 \| 浏览/下载：19/0 \| 提交时间：2013/03/25 Bragg grating has lots of use in many optical field. Especially in dense wavelength division multiplexing system and optical filters and so on. Holographic Bragg grating with 1800 line/mm is fabricated in this experiment. Performances of holographic Bragg gratings are measured in our lab. Results show that this holographic Bragg grating can resolve 0.26nm fine line spectrum. Diffraction efficiency of Bragg grating can get 76% in 1.55m wavelength. Results also show that this kind of holographic Bragg grating may use in DWDM device and can produce fine narrow width spectra.