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【期刊论文】Methods to improve the bus throughput of node computer in optical interconnection network
周革, Feng Tang*, Wencai Jing, Yimo Zhang, Ge Zhou, Dagong Jia, fanmin Kong, Zhixiang Sun
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-1年11月30日
Both hardware and software are optimized simultaneously to improve the bus throughput of node computer in cluster computing network. A cost effective optical interconnection ring network is established using off-the-shelf PCs with windows operating system. A network adapter card ONIC is developed. Using ETDM and field program technique, the 1511 bandwidth of the 32bit
Optical interconnection, user-level interface, throughput, latency, computing cluster, end-system.,
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周革, Wencai Jing, Yimo Zhang, Ge Zhou
15 July 2002/Vol. 10, No.14/OPTICS EXPRESS,-0001,():
-1年11月30日
A new structure for bit synchronization in a tera-bit/s optical interconnection network has been designed using micro-electro-mechanical system (MEMS) technique. Link multiplexing has been adopted to reduce data packet communication latency. To eliminate link set-up time, adjustable optical delay lines (AODLs) have been adopted to shift the phases of the distributed optical clock signals for bit synchronization. By changing the optical path distance of the optical clock signal, the phase of the clock signal can be shifted at a very high resolution. A phase-shift resolution of 0.1ps can be easily achieved with 30-μm alternation of the optical path length in vacuum.
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【期刊论文】Measurement accuracy improvement with PZT scanning for detection of DPC in Hi-Bi fibers
周革, Wencai Jing, Yimo Zhang, Ge Zhou, Feng Tang, and Haifeng Li
OPTICS EXPRESS 690, 2002, 10 (15),-0001,():
-1年11月30日
Piezo-electronic transducer is used in combination with mechanical scanning devices to improve measurement accuracy in a distributed polarization coupling detection system. For mechanical scanning range of 150mm with 200nm resolution, the measurement error of polarization-coupling intensity can be improved from 38% to 2% in combination with a 20-nm resolution piezo-electronic transducer.
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周革, Tamg Femg. Jing Wencai, Zhang Yimo, Zhou Ge, Li Haifeng, Man Xiaoming, Jia Dagong
光子学报,2003,32(9):1156~1158,-0001,():
-1年11月30日
以白光麦克尔逊干涉仪对双折射保偏光纤的偏振耦合进行测试,并基于仪器结构建立了测试扫描结果的数学模型,分析及仿真了信噪比对耦合强度及耦合位置检测的影响大小及变化趋势。信噪比大于32Db,可满足偏振耦合测试的要求。
白光干涉, 偏振耦合, 信噪比, 保偏光纤
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周革, Wencai Jing , Yimo Zhang, Ge Zhou and Feng Tang
Meas. Sci. Technol. 14(2003)294-300,-0001,():
-1年11月30日
In this paper, white light interferometry has been used to measure the distributed polarization coupling in high birefringence fibres. Detailed theoretical analysis of the measurement accuracy of the testing system is presented. The main part is a Michelson interferometer with a scanning arm driven by a stepping motor. The minimum polarization coupling intensity detectable by this system is -77dB. The maximum fibre length that can be tested under this design is more than 1km, and the spatial resolution is better than 50mm. The influence of the opto-electro-mechanical devices on measurement accuracy has been analysed in order to improve the performance-to-cost ratio. This testing system can also be used in coherence division multiplexing optical fibre sensors.
white light interferometry, Michelson interferometer, polarization coupling intensity, spatial resolution, coherence division multiplexing
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