中国科学院机构知识库网格系统: 检索

Performance Optimization of Fiber Optic Interferometric Accelerometer Based on Phase Noise Analysis 期刊论文 OAI收割
IEEE SENSORS JOURNAL, 2019, 卷号: 19, 期号: 22, 页码: 10498-10505
作者: Yang, Yue; Wang, Zhongmin; Chang, Tianying; Cheng, Liyao; Yu, Miao

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收藏 | 浏览/下载：32/0 | 提交时间：2020/08/24

Differential phase noise fiber optic accelerometer interference arm length difference Michelson interference modulation depth

Design and image restoration research of a cubic-phase-plate system (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, April 26, 2010 - April 29, 2010, Dalian, China
作者: Zhang J.; Zhang J.; Zhang J.; Shi G.; Zhang X.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

Wave-front coding technology is a novel jointly optical and digital imaging technology which can greatly extend the depth of focus of optical systems. The image restoration process is an important part of wave-front coding technology. Using wave-front coding makes the modulation transfer function(MTF) values of the optical systems change little over a range of several times the depth of focus which means the system MTF is quite insensitive to defocus and there is no zero in the passband. So we can design a single filter for the restoration of images in different defocus positions. However it's hard to avoid noise during image acquisition and transmission processes. These noises will be amplified in the image restoration especially in the high frequency part when the MTF drop is relatively low. The restoration process significantly reduces the system signal to noise ratio this way. Aimed at the problem of noise amplification a new algorithm was proposed which incorporated wavelet denoising into the iterative steps of Lucy-Richardson algorithm. Better restoration results were obtained through the new algorithm effectively solving the noise amplification problem of original LR algorithm. Two sets of identical triplet imaging systems were designed in one of which the cubic-phase-plate was added. Imaging experiments of the manufactured systems were carried and the images of a traditional system and a wave-front coded system before and after decoding were compared. The results show that the designed wave-front coded system can extend the depth of focus by 40 times compared with the traditional system while maintaining the light flux and the image plane resolution. 2010 Copyright SPIE - The International Society for Optical Engineering.

Enhancement of modulation depth of an all-optical switch using an azo dye-ethyl red film 期刊论文 OAI收割
CHINESE PHYSICS B, 2010, 卷号: 19, 期号: 8, 页码: -84208
Lu, WQ; Chen, GY; Hao, ZF; Xu, JJ; Tian, JG; Zhang, CP

收藏 | 浏览/下载：20/0 | 提交时间：2011/07/03

all-optical switch azo dye ethyl-red film modulation depth

Analysis of signal-to-noise ratio of an ultra-compact static polarization interference imaging spectrometer 期刊论文 OAI收割
journal of optics a-pure and applied optics, 2009, 卷号: 11, 期号: 8
作者: Zhang, ChunMin; Zhao, BaoChang; Yuan, ZhiLin; Huang, Weijian

收藏 | 浏览/下载：23/0 | 提交时间：2015/09/01

polarization interference imaging spectroscopy signal-to-noise ratio modulation depth

Analysis and calculation of the modulation depth of the Michelson interferometer with wide field, chromatic compensation and thermal compensation 期刊论文 OAI收割
acta physica sinica, 2009, 卷号: 58, 期号: 4, 页码: 2415-2422
作者: Bu Zhi-Chao; Zhang Chun-Min; Zhao Bao-Chang; Zhu Hua-Chun

收藏 | 浏览/下载：28/0 | 提交时间：2015/08/27

interference imaging technology Michelson interferometer the modulation depth dual-beam interference

All-optical switching characteristics of ethyl red doped polymer film 期刊论文 OAI收割
OPTICAL MATERIALS, 2008, 卷号: 30, 期号: 9, 页码: 1349-1354
Xu, T; Chen, GY; Zhang, CP; Hao, ZF; Xu, XX; Tian, JG

收藏 | 浏览/下载：17/0 | 提交时间：2011/07/03

ethyl red photo-induced birefringence all-optical switching modulation depth

Study of SNR of a novel polarization interference imaging spectrometer 期刊论文 OAI收割
acta physica sinica, 2007, 卷号: 56, 期号: 11, 页码: 6413-6419
作者: Yuan, Zhi-Lin; Zhang, Chun-Min; Zhao, Bao-Chang

收藏 | 浏览/下载：29/0 | 提交时间：2015/08/21

polarization interference imaging spectroscopy signal-to-noise ratio modulation depth

正弦相位调制的频域光学相干层析成像 期刊论文 OAI收割
光学学报, 2007, 卷号: 27, 期号: 8, 页码: 1470, 1474
步鹏; 王向朝; 佐佐木修己

收藏 | 浏览/下载：1206/159 | 提交时间：2009/09/18

医用光学与生物技术 medical optics and biotechnology 频域光学相干层析术 Fourier-domain optical coherence tomography 正弦相位调制 sinusoidal phase modulation 全深度探测 full-depth probing

Permissible deviations of the polarization orientation in the polarization imaging spectrometer 期刊论文 OAI收割
journal of optics a-pure and applied optics, 2004, 卷号: 6, 期号: 8, 页码: 815-817
作者: Zhang, CM; Xiangli, B; Zhao, BC

收藏 | 浏览/下载：37/0 | 提交时间：2015/07/29

polarization imaging spectrometer polarization orientation permissible deviation modulation depth

Analysis of the modulation depth affected by the polarization orientation in polarization interference imaging spectrometers 期刊论文 OAI收割
optics communications, 2003, 卷号: 227, 期号: 4-6, 页码: 221-225
作者: Zhang, CM; Zhao, BC; Bin, XL; Zha, XW; Zhang

收藏 | 浏览/下载：114/17 | 提交时间：2010/01/12

polarization interference imaging spectrometer modulation depth polarization orientation