An simple method to fabricate phase shift in fiber grating is proposed and demonstrated. The phase shift is introduced by cutting the grating and fusion splice. Experimental results are given. Theoretical analysis is ...
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An simple method to fabricate phase shift in fiber grating is proposed and demonstrated. The phase shift is introduced by cutting the grating and fusion splice. Experimental results are given. Theoretical analysis is presented and factors affecting the performance is expatiated.
The wavelength-division multiplexing passive opticalnetwork (WDM-PON) is considered to be a promising method to overlay or upgrade the existing optical access network. A centralized WDM-PON in which the downstream wa...
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The shape of the Web in terms of its graphical structure has been a widely interested topic. Two graphs, Bow Tie and Daisy, have stood out from previous research. In this work, we take a different approach, by viewing...
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ISBN:
(纸本)9781605580852
The shape of the Web in terms of its graphical structure has been a widely interested topic. Two graphs, Bow Tie and Daisy, have stood out from previous research. In this work, we take a different approach, by viewing the Web as a hierarchy of three levels, namely page level, host level, and domain level. Such structures are analyzed and compared with a snapshot of Chinese Web in early 2006, involving 830 million pages, 17 million hosts, and 0.8 million domains. Some interesting results have emerged. For example, the Chinese Web appears more like a teapot (with a large size of SCC, a medium size of IN and a small size of OUT) at page level than the classic bow tie or daisy shape. Some challenging phenomena are also observed. For example, the INs become much smaller than OUTs at host and domain levels. Future work will tackle these puzzles.
A 100-Gb/s high-speed optical transmitter is proposed and experimentally demonstrated. Based on frequencyquadrupling technique, two sub-channels with a fixed 50-GHz spacing are obtained from one laser source. Using re...
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We present a two-stage TDM/WDM metro-access integrated network with all-optical VPN across different sub-PONs. This feeder-ring with access-trees based architecture is employed to provide VPN service covering a wider ...
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optical grids can integrate geographically distributed resources more efficiently to support applications because of characteristics of opticalnetworks. The essential aspect of optical grid applications is scheduling...
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86 Gbit/s hybrid polarization multiplexed OOK/DPSK signal is generated and transmitted at the same wavelength. Clear eye diagrams of demultiplexed OOK and DPSK signals are obtained after transmission over a 106.5 km S...
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This paper demonstrates bandwidth requirement for optical DPQSK transmitter using one Dual-drive Mach Zehnder Modulator (DDMZM) for 100Gb/s physical transmission. The result shows that at receiver bandwidth of 40GHz, ...
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As a special case of continuous phase frequency-shift-keying (FSK), minimum-shift keying (MSK) exhibits some different properties compared with the traditional optical phase modulation formats, such as return-to-zero ...
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