中国科学院机构知识库网格系统: 检索

A chiral long-period grating fabrication method based on axis-offset rotating optical fiber 期刊论文 OAI收割
OPTICAL AND QUANTUM ELECTRONICS, 2019, 卷号: 51, 期号: 4
作者: Kong, Xudong; Ren, Liyong; Liang, Jian; Ren, Kaili; Ju, Haijuan

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收藏 | 浏览/下载：69/0 | 提交时间：2019/04/30

Fiber optics Fiber design and fabrication Fiber optics and optical communications

Fabrication of Microtapered/Helical Long-Period Fiber Gratings with a CO2 Laser Fusion Splicer 会议论文 OAI收割
Wuzhen, PEOPLES R CHINA, 2017-08-07
作者: Ren, Kaili; Ren, Liyong; Kong, Xudong; Liang, Jian; Wu, Zhaoxin

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收藏 | 浏览/下载：29/0 | 提交时间：2018/03/28

Long-period Gratings Fiber Optics Sensors Fiber Design And Fabrication

High-sensitive Torsion Sensing Based On Chiral Long-period Gratings 会议论文 OAI收割
Wuzhen, PEOPLES R CHINA, 2017-08-07
作者: Kong, Xudong; Ren, Kaili; Ren, Liyong; Liang, Jian; Ju, Haijuan

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收藏 | 浏览/下载：33/0 | 提交时间：2018/03/28

(060.2310) Fiber Optics (060.2280) Fiber Design And Fabrication (060.0060) Fiber Optics And Optical Communications

Line-plane-switching infrared bundle for push-broom sensing fiber imaging 期刊论文 OAI收割
optical materials, 2015, 卷号: 42, 页码: 491-494
作者: Zhan, Huan; Yan, Xingtao; Guo, Haitao; Xu, Yantao; He, Jianli

收藏 | 浏览/下载：24/0 | 提交时间：2015/07/16

Fiber design and fabrication Chalcogenide glass Fiber optics Infrared imaging bundle infrared

A Slot Micro/Nano Fiber With Elliptical Low-Index Core 期刊论文 OAI收割
ieee photonics journal, 2012, 卷号: 4, 期号: 5, 页码: 1610-1621
作者: Zhang, Wenfu; Mu, Jian-Wei; Huang, Wei-Ping; Zhao, Wei

收藏 | 浏览/下载：16/0 | 提交时间：2012/11/29

Fiber optics fiber design and fabrication nonlinear optics fibers

Optimization of the two parameters of classical blaze grating in Littrow mount (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Advanced Engineering Materials and Technology, AEMT 2012, July 6, 2012 - July 8, 2012, Zhuhai, China
作者: Zhang S.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

On the base of electromagnetic theory of gratings we analyse the effects of both of two important parameters of classical blaze grating in Littrow mount to diffraction efficiency and the two parameters are optimized for obtaining highest diffraction efficiency. It is presented that not only blaze angle but apex angle affect diffraction efficiency. The investigation has been performed on the design and fabrication of classical blaze grating which has high diffraction efficiency. (2012) Trans Tech Publications Switzerland.

The optical design of cubic phase plate testing system (EI CONFERENCE) 会议论文 OAI收割
2011 Symposium on Photonics and Optoelectronics, SOPO 2011, May 16, 2011 - May 18, 2011, Wuhan, China
作者: Zhang X.; Zhang X.; Zhang X.; Zhang Y.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

Computer-generated holograms (CGH) have been widely used for years in optical testing of aspheric surfaces in combination with Fizeau interferometers. With the development of diffraction optics computer technology and micro-processing technology the accuracy of the CGH testing can achieve a hundredth of a wave and the cost is reduced greatly. CGH is capable of producing an optical wavefront with any desired shape. So it is fascinating and will have good prospects to test free-form surfaces using CGH. As the CGH can create any wavefront shape it can also be used in unsymmetrical aspherical surfaces testing. Taking the cubic surface as an example this paper gives a method to test unsymmetrical surfaces. This paper gives the design to test a cubic surface. And the separation of the diffraction orders and the binary process of the continuous CGH phase function are discussed in detail. The alignment tolerance of the test system and the CGH fabrication tolerance are analyzed. We also present an idea using a CGH and two spherical lenses as null lens to test the cubic surface when the surface deviation is great. 2011 IEEE.

Optimum design of the carbon fiber thin-walled baffle for the space-based camera (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yan Y.; Gu S.; An Y.; Jin G.

收藏 | 浏览/下载：14/0 | 提交时间：2013/03/25

The thin-walled baffle design of the space-based camera is an important job in the lightweight space camera research task for its stringent quality requirement and harsh mechanical environment especially for the thin-walled baffle of the carbon fiber design. In the paper an especially thin-walled baffle of the carbon fiber design process was described and it is sound significant during the other thin-walled baffle design of the space camera. The designer obtained the design margin of the thin-walled baffle that structural stiffness and strength can tolerated belong to its development requirements through the appropriate use of the finite element analysis of the walled parameters influence sensitivity to its structural stiffness and strength. And the designer can determine the better optimization criterion of thin-walled baffle during the geometric parameter optimization process in such guiding principle. It sounds significant during the optimum design of the thin-walled baffle of the space camera. For structural stiffness and strength of the carbon fibers structure which can been designed the effect of the optimization will be more remarkable though the optional design of the parameters chose. Combination of manufacture process and design requirements the paper completed the thin-walled baffle structure scheme selection and optimized the specific carbon fiber fabrication technology though the FEM optimization and the processing cost and process cycle are retrenchment/saved effectively in the method. Meanwhile the weight of the thin-walled baffle reduced significantly in meet the design requirements under the premise of the structure. The engineering prediction had been adopted and the related result shows that the thin-walled baffle satisfied the space-based camera engineering practical needs very well its quality reduced about 20% the final assessment index of the thin-walled baffle were superior to the overall design requirements significantly. The design method is reasonable and efficient to the other thin-walled baffle that mass and work environment requirement is requirement harsh. 2011 SPIE.

Effect of gimbal point displacement on optical axis pointing precision in an image seeker (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：39/0 | 提交时间：2013/03/25

A concentric glass spherical dome was usually chosen as the transparent window mounted in front of the optical lens in an image seeker. However optical ray had to change its direction when propagating through the dome due to refraction unless passing through the center of the dome which demanded gimbal point coincide with the center of the dome exactly. In fact gimbal point displacement could not be eliminating due to fabrication assembly and vibration therefore the optical axis pointing error generated. In this paper the effect of gimbal point displacement on optical axis pointing precision in an image seeker was analyzed and the theoretical expression of the optical axis pointing error was derived based on geometric optics and the error dynamics was explored by numerical. Take a visible light image seeker as a case the thickness of concentric glass spherical dome was 8mm and the inner radius was 72mm and the optical axis pointing errors varying dynamically with the look angle and the gimbal point displacement were shown in graph. When the gimbal displacement was 0.11mm the maximum optical axis pointing error was 0.054mrad that is equal to the instantaneous field of view (IFOV) corresponding to the camera system whose focal length was 120mm and pixel size was 6.5m. Furthermore with the gimbal displacement increasing the optical axis pointing error increased linearly. The analyzed results provided a theoretical basis for the displacement range which had to be limited strictly in the gimbal design process. 2011 IEEE.

Design and demonstration of micro multi-step mirrors and light source in micro FTIR (EI CONFERENCE) 会议论文 OAI收割
6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011, February 20, 2011 - February 23, 2011, Kaohsiung, Taiwan
Liang Z.; Fu J.; Feng C.; Liang J.

收藏 | 浏览/下载：43/0 | 提交时间：2013/03/25

To obtain high resolution high signal-to-noise ratio (SNR) high reliability and real time in wide spectral range we study the space modulation Micro Fourier Transform Spectrometer (FTS) based on multi-step mirrors covering the spectral range of 3-5m and 8-12 m in theory and experiment. The influences of spectrum reconstruction caused by the diffraction and extended light source in Fourier Transform Infrared Spectrometer (FTIR) are analyzed. A method to reduce the noises in spectrum reconstruction and the relationship between coherent intensity and solid angle of light source are discussed. An extended light source with suitable size is chosen considering the requirement of SNR and spectrum resolving power in the optical design. Furthermore the fabrication of micro multi-step mirrors which is the core part of FTS is investigated. Three methods for fabricating multi-step micro mirrors are demonstrated. 2011 IEEE.