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【期刊论文】Design and analysis of the communication protocol for TSOINet
井文才, Wencai Jing, Jindong Tian, Ge Zhou, Yimo Zhang, Wei Liu, Haifeng Ei, Nan Zhang
,-0001,():
-1年11月30日
In this paper, a communication protocol has been designed for the two-layer scalable optical interconnectinn network (TgOlNet) designed in Tianjin University. The communication protocol has been designed based on TCP/IP (transmission control protocol/intemet protocol) protocol. But it is more efficient than TCP/IP for data Iransmissinn in TSOINet. An auxiliary channel has been introduced in TSOINet for transmission of the commtmicatinn status messages among the sub-layer rings. Many network management functions, such as flow control, hand shaking, etc., can be achieved via the auxiliary chalmel, so the commtmication overheads can be decreased. The performance of the corrtmunication protocol has been evaluated compared to TCP/IP protocol for data transmission in TSOINet.
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【期刊论文】Measurement accuracy improvement with PZT scanning for detection of DPC in Hi-Bi fibers
井文才, Wencai Jing, Yimo Zhang, Ge Zhou, Feng Tang, and Haifeng Li
29 July 2002/Vol. 10, No.15/OPTICS EXPRESS,-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 200-nm 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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井文才, Wencai Jing, Yimo Zhang, Ge Zhou, Hongxia Zhang, Zhaohui Li, and XiaomingMan
9 September 2002/Vol. 10, No.18/OPTICS EXPRESS,-0001,():
-1年11月30日
White light interferometry has been adopted to measure distributed polarization coupling in high-birefringence waveguides. Since the coupling mode is weak compared to the exciting mode, the contrast ratio of the interferogram is very low. This will increase the difficulty of direct detection of the polarization coupling intensity. By rotating the angle between the polarization eigenmodes and the principal axis of the linear polarizer from 45
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【期刊论文】Design and implementation of a broadband optical rotary joint using C-lenses
井文才, Wencai Jing, Dagong Jia, Feng Tang, Hongxia Zhang, Yimo Zhang, Ge Zhou, Jinlong Yu, Fanmin Kong, and Kun Liu
23 August 2004/Vol. 12, No.17/OPTICS EXPRESS ,-0001,():
-1年11月30日
A broadband optical rotary joint (BORJ) was designed using Clenses. Its insertion loss was less than 2 dB at both the 1300nm and 1550nm wavelength windows. Wavelength division multiplexing (WDM) technique was adopted to increase the number of data transmission channels. Hundreds of wavelength channels can be accommodated for data transmission through relatively rotating interfaces using this BORJ. The total data transmission rate through this BORJ can be more than 200 Gbit/s. By using Dove prism, both space division multiplexing (SDM) and WDM techniques can be implemented simultaneously in the design of BORJ with C-lenses. This structure of BORJ has a low cost. It can be used for optical data transmission and optical sensing.
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井文才, 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 0.1 ps can be easily achieved with 30-μm alternation of theoptical path length in vacuum.
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