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	Modified snapshot spectroscopic ellipsometry based on optical frequency-domain interferometry 期刊论文 OAI收割 Optik, 2021, 卷号: 228 作者: Li, Siyuan; Zhang, Chunmin; Quan, Naicheng \| 收藏 \| 浏览/下载：38/0 \| 提交时间：2021/01/21 Spectroscopic ellipsometry Optical frequency-domain interferometry Channel bandwidth
	面向窄带通信信道的语音质量增强问题研究学位论文 OAI收割工学博士, 中国科学院自动化研究所: 中国科学院大学, 2015 作者: 刘斌收藏 \| 浏览/下载：105/0 \| 提交时间：2015/09/02 语音端点检测单通道语音增强极低速率语音编码语音带宽扩展深层神经网络 speech activity detection single channel speech enhancement speech coding at very low bit rate speech bandwidth extension deep neural network
	Physical layer design for free space optical communication (EI CONFERENCE) 会议论文 OAI收割 2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China 作者: Wang H.; Zhang Q.; Guo J.; Guo J.; Wang H. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 A small size Free Space Optical Communication System is introduced including the hardware and the hardware specified physical layer protocol. In detail the rapid synchronization method to reduce the handshake bandwidth requirement is demonstrated. The hardware of the system includes the laser driver system the signal amplifying and shaping system the data interface system. The hardware specified physical layer protocol is used to interface the outer data serialize and deserialize the data stream check transmission errors and schedule the data transmission. The overall system is a FIFO-like system and the user can use it as if he's operating a FIFO. The system is designed mainly for terrestrial FSO link whose signal channel is the atmosphere. Due to the complex composition and activity of the atmosphere this signal channel brings in great influence on the transmitting laser in it for example the absorption and scattering of the atmosphere molecules and aerosols the scintillation of received laser power caused by the turbulence of the atmosphere all of which results in a much higher Bit Error Rate (BER) of the communication system than wired communication systems leading to frequent resynchronization. In our system the sampling clock is generated locally using multi-phase sampling technique rather than PLLbased clock recovery which helps to rapid synchronization. 2012 IEEE.
	Optical transmission system based on 10GBASE-X (EI CONFERENCE) 会议论文 OAI收割 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China 作者: Gao S.-J. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 In order to further enhance the bandwidth of the data communication system in theodolite The whole design of the PMD is realized by using Xenpak optical module. Its duty is responsible for converting 4-channel parallel 3.125Gbps data stream into a serial 10.3126Gbps data stream a single channel serial optical transmission system was designed based on the studying of the 10BASE-X Gigabit Ethernet physical layer technology which meets the IEEE standard. The conversion between the 64-bit 156.25MHz TTL signals and the 4 channel 3.125Gbps PCML differential signals is carried out by FPGA and sending out it in the form of light signals. The experimental results show that data transmission capacity was achieved a 10Gbps in the single-channel optical transmission system. It can conduct short distance transmission. The system delay is about 31lns. The bit error rates no more than 10-12 which satisfies the system demand. 2010 IEEE.
	Packaging technology of polymer/Si arrayed waveguide grating and their environmental stability (EI CONFERENCE) 会议论文 OAI收割 2005 6th International Conference on Electronics Packaging Technology, August 30, 2005 - September 2, 2005, Dameisha, Shenzhen, China 作者: Zhang Y.; Zhang X.; Zhang X.; Zhang X.; Wang F. 收藏 \| 浏览/下载：32/0 \| 提交时间：2013/03/25 Future optical communication systems will use more of the exceptional high bandwidth of optical fiber. Wavelength division multiplexing (WDM) systems are well suited to transport terabits of information via the fiber[1]. Multiplexers/ demultiplexers (MUX/DEMUX) are essential components for dense WDM systems. Several different kinds of multiplexer types have been developed in the past: (a) interference filters (b) fiber gratings and (c) planar lightwave circuit (PLC) MUX/DEMUXers[2 3]. The planar fabrication process of the last mentioned PLCs allows the realization of high performance filters with a large number of wavelength channels. Further an integration with other optical elements seems to be possible. Arrayed waveguide gratings (AWG) are a special kind of PLC-MUX/DEMUXers which are very attractive components for WDM systems because of their great flexibility in filter design[4 5]. Basically an AWG is an optical spectrograph built in planar waveguide technique. Typically AWGs works in a high grating order (50-250). For AWG multiplexer applications in communications systems a precise wavelength controllability and wavelength stability with long term is demanded. Recently a polymeric (especially fluorinated polymer with low optical absorption loss in the infrared region) AWG has attracted much attention because of its easy fabrication low cost possibility and a potential of integration with other polymer devices[6]. Standard AWGs however show a change of center wavelength with temperature. A method to prevent this temperature drift is to package the AWG together with a temperature controller in order to tune and fix the desired filter-wavelength. In this paper a 32-channel AWG was fabricated using a cross-linkable fluorinated poly (ether ether ketone) (FPEEK) its package technology and environmental stability were also discussed. 2005 IEEE.
	Fabrication of straight waveguide in two-dimensional photonic crystal slab and its light propagation characteristics 期刊论文 OAI收割 ACTA PHYSICA SINICA, 2005, 卷号: 54, 期号: 12, 页码: 5659 Han, SZ; Tian, J; Feng, S; Ren, C; Li, ZY; Chen, BY; Zhang, DZ 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/09/17 CHANNEL DROP FILTER HIGH TRANSMISSION POINT-DEFECTS Y-SPLITTER BANDWIDTH REGION BENDS
	channel state dependent robust tcp/ip header compression for 3g wireless networks 会议论文 OAI收割 23rd IEEE International Performance, Computing, and Communications Conference (IPCCC 2004), Phoenix, AZ, APR 15-17, Wu YC; Sun LM; Zheng JP; Huang K; Liao Y \| 收藏 \| 浏览/下载：32/0 \| 提交时间：2011/07/29 3G wireless networks Internet protocols TCP/IP header compression algorithm TCP/IP protocol all-IP network compression ratio mobile technology radio channel bandwidth variable sliding window window-based least significant bit encoding wireless c
	Research of a novel interleaver basing on modified Michelson interferometer with three-mirror Fabry-Perot interferometer and Gires-Tournois resonator (EI CONFERENCE) 会议论文 OAI收割 APOC 2002:Optical Components and Transmission Systems, October 16, 2002 - October 18, 2002, Shanghai, China Shao Y.; Jiang Y.; Zheng Q.; Qian L. 收藏 \| 浏览/下载：15/0 \| 提交时间：2013/03/25 A novel Interleaver using a modified Michelson interferometer in which its reflecting mirrors are replaced by three-mirror Fabry-Perot interferometer and Gires-Tournois resonator respectively is presented. On basis of the theory of Michelson interference a designing principle of the interleaver which has square-like frequency response with zero ripple wide flat-top unity contrast simple structure and stable performance is given. The device which possesses channel spacing of 50 GHz zero ripple 0.5 dB bandwidth more than 0.27 nm and close channel isolation more than 73 dB has been designed.