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Wavelength conversion with a self wavelength selecting function is described. The convenor utilises the FM/IM conversion function of a Mach-Zehnder filter and the light injection induced frequency shift in a DFB-LD. Frequency-modulated light is converted to another wavelength which can be tuned by a wavelength selection signal contained in the original input light.
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Kyo Inoue (1989) studied this question.
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