机构

• 长春光学精密机械与物... [4]
• 西安光学精密机械研究... [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [3]
• 会议论文 [2]

发表日期

• 2019 [1]
• 2018 [1]
• 2012 [1]
• 2008 [1]
• 2005 [1]

学科主题

筛选

浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Measurement of the second-order spectral diffraction efficiency of polarized dual-grating spectrometers 期刊论文  OAI收割 Optik, 2019, 卷号: 180, 页码: 355-360 作者:  H.S.Li;  B.Li;  S.R.Wang;  X.H.Yang;  Z.F.Li   |  收藏  |  浏览/下载：31/0  |  提交时间：2020/08/24 Diffraction efficiency,Second-order spectrum,Polarized light,Dual-grating spectrometer,suppression,Optics   Chromatic analysis of harmonic Fresnel lenses by FDTD and angular spectrum methods 期刊论文  OAI收割 Applied Optics, 2018, 卷号: 57, 期号: 19, 页码: 5281-5287 作者:  Yang, Jianming;  Twardowski, Patrice;  Gerard, Philippe;  Yu, Wenhui;  Fontaine, Joel   |  收藏  |  浏览/下载：24/0  |  提交时间：2019/09/17 Time domain analysis  Angle measurement  Diffraction efficiency  Efficiency  Finite difference time domain method  Full width at half maximum  Harmonic analysis  Optical instrument lenses  Refractive index  Spectrum analysis   Improved method of target detection on optoelectronic hybrid joint transform correlator in cluttered scences (EI CONFERENCE) 会议论文  OAI收割 2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011, September 23, 2011 - September 25, 2011, Hefei, China 作者:  Yang L.;  Yang L. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 A classical joint transform correlator (JTC) usually yields large correlation sidelobes as well as a large correlation peak width  strong zero-order peak  and low diffraction efficiency  which make the detection ability of JTC lower. To overcome these difficulties  firstly  a joint power spectrum (JPS) subtraction technique in Fourier plane was proposed  where reference image power spectrum and object image power spectrum are subtracted from the JPS before inverse Fourier-transform operation  it is obvious that the modified JPS removes the zero-order term. Secondly  a fringe-adjusted filter (FAF) was presented to suppress sidelobes and noises. The modified JPS is multiplied by a FAF before the inverse Fourier-transform operation to obtain the cross-correlation peak. Computer simulations demonstrated the improved method can obviously remove zero-order diffraction and effectively suppress the sidelobes and noises compared with classic JTC  and then improve the detection ability for JTC. Experimental results presented the sharp correlation peak and also confirmed the method effectiveness. (2012) Trans Tech Publications  Switzerland.   Spectral relationship of photoinduced refractive index and absorption changes in fulgide films 期刊论文  OAI收割 journal of modern optics, 2008, 卷号: 55, 期号: 6, 页码: 1003-1011 作者:  Menke, N.;  Yao, B.;  Wang, Y.;  Dong, W.;  Lei, M. 收藏  |  浏览/下载：197/5  |  提交时间：2010/01/27 fulgide  Kramers-Kronig relation (KKR)  photoinduced absorption changing spectrum  photoinduced refractive index changing spectrum  diffraction efficiency spectrum  non-destructive reconstruction   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：18/0  |  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.