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Width-modulated silicon waveguide is investigated as a means of quasi-phase-matching to enhance the bandwidth of wavelength conversion based on four-wave-mixing. A conversion bandwidth enhancement of ~40% is achievable in a 5mm sinusoidally modulated SOI waveguide.
Based on the high nonlinearity of silicon waveguides, a compact frequency-resolved optical gating (FROG) system has been demonstrated using cross-phase modulation for ultrafast pulse characterization. Amplitude and phase of a 700 fs pulse have been measured.
With the development of high rate data transmission technology via distribution line communication, the electric power, data, voice and video can be transferred in the same electric power distribution network, and the technology will be put in operation widely in the future. However the traditional technology of power line communication is not adaptable to the complex and harsh environment of distribution...
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