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A Study Of Reliability For Multi-stage And Multi-wavelength Optical Network-on-Chip

Posted on:2015-02-27Degree:MasterType:Thesis
Country:ChinaCandidate:J ZhangFull Text:PDF
GTID:2308330464470454Subject:Electronics and Communications Engineering
Abstract/Summary:PDF Full Text Request
In recent years, the number of the processor cores integrated on a single chip is becoming more and more. While the traditional electrical interconnection in network on chip has a serious bottleneck in the communication delay, energy consumption and bandwidth. With the development of CMOS compatible silicon photonics technology, the silicon photonics technology can be used in network on chip. And the photonics interconnection technology can not only meet the high demand of network on chip on energy consumption, delay, throughput and performance, but also can greatly enhance the speed of data transmission in the network, so that the Optical Network on Chip (ONoC) has attracted significant research interest in the word. The micro ring resonator is the basic optical devices in ONoC, since the optical signal coupling is not ideal in the transmission process of these basic optical devices, part of its energy will leak into the other signal inevitably, becoming the noise named crosstalk, affecting the performance of optical router even the whole ONoC. Thereby it will reduce the reliability of ONoC, the reliability research is very important for ONoC performance.The thesis studies the reliability problem of multi-stage and multi-wavelength ONoC, with the focus on the influence of crosstalk effect on the reliability in ONoC. The thesis firstly introduces the two typical application examples of the multi-stage interconnection, Wavelength Division Multiplexing (WDM) and wavelength routing technology in ONoC and summarizes the research status of crosstalk in ONoC. Then, according to the analysis of optical signal transmission in the silicon optical devices, we explore the causes of crosstalk in ONoC. We build the crosstalk models for the waveguide crossing, optical parallel switching elements and optical cross switching elements. And on this basis, combining with the layout of Crystal and its optical router structure, we establish the corresponding analysis model and analyse the loss, crosstalk noise and signal-to-noise ratio (SNR) at the router level and network level respectively. Finally, we explore the crosstalk problem in multi-wavelength ONoC. In multi-wavelength ONoC, by the analysis of the mutual influence on the signal transmission with different wavelength, we model the basic optical devices and optical switching elements in the network. The loss, crosstalk and SNR in the WANoC and its optical router are analyzed in detail. By theoretical calculation and the specific analysis, the loss and crosstalk analysis model are validated.
Keywords/Search Tags:ONoC, crosstalk, signal noise ratio, reliability
PDF Full Text Request
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