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A Novel Composite Scheduling Algorithm for OBS Switch with Shared optical buffer

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A Novel Composite Scheduling Algorithm for OBS Switch with S...

Dispersion of double-slot in optical microring resonators buffer

2003 International Conference on Communication Technology

作者： Hao Chi Jiangtao Luo Huandong Zhao Jianxin Wang Zhizhong Zhang and Qingji Zeng Department of Electronic Engineering Shanghai Jiaotong University

In this paper, the conservative mode and the greedy mode scheduling algorithms for optical burst switch with shared optical buffer are presented and discussed. Computer simulations compare their perfo

关键词： optical burst switchi ng (OBS) optical buffer Fiber delay line (FDL) Scheduling algorithm Variable length packet

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Frontiers of Optoelectronics 2016年第1期9卷 106-111页

作者： Chuan WANG Xiaoying LIU Peng ZHOU Peng LI Jia DU School of optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China

In the optical packet switching network, optical buffer is an important device. Microring resonator optical buffers provide good delay performance and flexibility in design. By cascading multiple microring resonators, higher delay-bandwidth product is obtained, but the requirements of high integration and low dispersion are hard to satisfy simultaneously. Double-slot waveguide was proposed to construct highly integrated racetrack microring resonators in this study. Based on dispersion analysis of the thickness of each layer of a waveguide, the structure ofwaveguide was optimized to reach flat and low dispersion. Average dispersions of straight and 3 μm bend waveguides were 5.1 ps/（nm·km） and 4.4 ps/（nm· km）, respectively. Besides, the additional loss from coupling was greatly reduced when applying proper relative displacement between straight and bend waveguides. Theoretical and design basis provided in this paper will help to develop multi-microring optical buffers in the future.

关键词： microring optical buffer double-slot waveguide

Simulation of the Physical Performance of optical Packet Switching Nodes

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Journal of Shanghai University(English Edition) 2002年第4期6卷 307-312页

作者：王春华李力朱炳春贾潞华 School of Communication and Information Engineering Shanghai University Shanghai China

A graphical and visual simulation system for the study of optical packet switching (OPS) nodes is accomplished. With the simulation system, the effect on physical performance-bit error rate (BER) due to a variety of factors such as the crosstalk parameters of OPS nodes, number of cascaded OPS nodes, length of optical output buffer, traffic load and fluctuation of amplitude of optical signals are evaluated. Reliability of the simulation system is proved by the analytical results obtained in all the above cases.

关键词： optical packet switching optical buffer bit error rate crosstalk interference noise.

Slow light in silicon microring resonators

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Frontiers of Optoelectronics 2011年第3期4卷 282-287页

作者： Yingtao HU Xi XIAO Zhiyong LI Yuntao LI Yude YU Jinzhong YU State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences

This paper experimentally investigated slow light effect in cascaded silicon-on-insulator(SOI) microring resonators. Double channel and single channel sidecoupled integrated spaced sequence of resonators(SCISSOR) devices were fabricated with electron beam lithography and dry etching technology. The delay performances of the SCISSOR devices were demonstrated using non-return-to-zero(NRZ) and return-to-zero(RZ)signals at different bit rates. Group delays and bandwidths of cascaded microrings are significantly enhanced compared with single microring.

关键词： slow light optical buffer group delay delay line microring resonator

Study of Crosstalk Property in an optical Packet Switching Node

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Journal of Shanghai University(English Edition) 2002年第1期6卷 59-63页

作者：王春华李力贾潞华黄肇明 School of Communication and Information Engineering Shanghai University Shanghai China

The effect of queuing delay of output buffer on the crosstalk property in optical packet switching nodes is investigated. The relationship between crosstalk and buffer length is obtained. From the calculation and simulation results, it is concluded that the crosstalk power penalty predominantly depends on the buffer length, the longer the buffer, the greater the penalty, as well as the random range of the penalty. While comparing with the effect of queuing delay, the effect of random routing path delay takes very little proportion in the total power penalty.

关键词： optical packet switching crosstalk optical buffer coherent incoherent.