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	Study of Morphology of Gas-Liquid Interfaces in Tank with Central Column in CSS under Different Gravity Conditions 期刊论文 OAI收割 SYMMETRY-BASEL, 2024, 卷号: 16, 期号: 7, 页码: 21 作者: Chen ZW(陈哲文); Duan L(段俐); Chen ST(陈上通); Li, Ce; Yang C(杨超) \| 收藏 \| 浏览/下载：11/0 \| 提交时间：2024/08/23 free surface China Space Station Young-Laplace equation perturbation method shooting method different gravity conditions
	High Precision Position Measurement Method for Laguerre-Gaussian Beams Using a Quadrant Detector 期刊论文 OAI收割 Sensors, 2018, 卷号: 18, 期号: 11, 页码: 11 作者: Li, Q.; Wu, J. B.; Chen, Y. S.; Wang, J. Y.; Gao, S. J. \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2019/09/17 position measurement method quadrant detector Laguerre-Gaussian beams least square method effective radius detection free-space propagation improvement angle Chemistry Electrochemistry Instruments & Instrumentation
	Measurement of complex terahertz dielectric properties of polymers using an improved free-space technique 期刊论文 OAI收割 MEASUREMENT SCIENCE AND TECHNOLOGY, 2017, 卷号: 28, 期号: 4, 页码: 8 作者: Chang, Tianying; Zhang, Xiansheng; Yang, Chuanfa; Sun, Zhonglin; Cui, Hong-Liang \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2018/03/15 free-space method vector network analyzer gated-reflect-line calibration THz time-domain spectroscopy polymer complex dielectric properties
	Communication synchronization in wireless optical link (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: Guo J.; Guo J.; Wang H.; Wang H.; Wang H. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 An FPGA based transceiving synchronization method is demonstrated for Free Space Optical (FSO) communication system which is discussed separately as the transmitting protocol and the receiving protocol. During the discussion of these two parts the co-operation of them is also discussed. The transmitting protocol interfaces the outer input data with a parallel port buffers the input data encodes the input data stream serializes the parallel data and outputs the serialized data. It also has an output management unit to manage the activity of each part of the transmitting protocol. The receiving protocol filters and synchronizes the input serial data stream parallels the serial data stream decodes the input data checks received error handles transmission exception and interfaces the outer receiver with a parallel port. The entire transceiving protocol could be programmed into a single FPGA chip to improve system integrity and reduce the system cost. The presented protocol could be taken as "protocol transparent" for outer interfaces meaning that when interfacing the presented system to an outer system users don't have to consider what protocol the outer system transceiving data stream is under for example the TCP/IP protocol or anything else in the case that its I/O interface is a parallel port. Simulation and final experiment prove that the protocol presented is a working solution at a certain bit rate scale. 2012 IEEE.
	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：30/0 \| 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.
	A method for analyzing the coupling of 3-d tapered rib waveguides with fibers 期刊论文 iSwitch采集 Acta physica sinica, 2005, 卷号: 54, 期号: 1, 页码: 6-11 作者: Liu, JW; Chen, SW; Yu, JZ 收藏 \| 浏览/下载：27/0 \| 提交时间：2019/05/12 Free space radiation mode Beam propagation method Coupling Transmission Tapered rib waveguides Silicon-on-insulator
	Study on optical parts of MOEMS optical switch with low insertion loss (EI CONFERENCE) 会议论文 OAI收割 MEMS/MOEMS Technologies and Applications II, November 10, 2004 - November 12, 2004, Beijing, China 作者: Wang W.; Wang L.; Wang L.; Wang L.; Chen W. 收藏 \| 浏览/下载：32/0 \| 提交时间：2013/03/25 We study insertion losses of optical switch when the laser beam is propagating during the free space between two single mode fibers (SMFs) and the related assemblage challenges Then a new packaging structure is developed for the hybrid-integration of free-space MOEMS (micro-opto-electro-mechanical systems) chip with a silicon micromachined submount to improve alignment accuracy. The submount is designed to accommodate various free-space MOEMS chips with minimal active optical alignment thus reducing the packaging cost. The silicon submount has a central recess to place the MOEMS chip in sixteen V-grooves for optical fibers and micropits for micro ball lenses all bulk micromachined at the same time by a single anisotropic wet etching step. A corner compensation technique is employed to prevent erosion of the convex corners where different geometries meet. Through this assembling method the fiber micro ball lens can be aligned preciously thus reduced lateral and angular misalignment between them. Then total insertion losses can be decreased.