ULTRA-HIGH SPEED OPTICAL WAVELENGTH CONVERTER APPARATUS WHICH IS ABLE TO IMPLEMENT ALL-OPTICAL CLOCK EXTRACTION SIMULTANEOUSLY

摘要

PURPOSE: A high speed optical wavelength converting apparatus for detecting electrooptic synchronous signal at the same time is provided to realize a high speed optical wavelength convertor without an optical pump and to realize a clock generator generating optical pulse trains with synchronized to the phase of input signal train. CONSTITUTION: The apparatus includes a mode locking laser(100) and an attenuator(120) for attenuating an optical output of an optical fiber. The first and second polarization controllers(140,280) are provided for maximizing four-wave mixing phenomenon because the four-wave mixing phenomenon is dependent upon polarization. A 3-dB optical coupler(160) is provided for dividing optical intensity into fifty to fifty. An optical isolator(180) transmits an optical wavelength of the optical fiber. A semiconductor optical amplifier(200) is operated as a laser gainer and a wavelength converter. The apparatus includes a delay line(220), an output variable optical fiber coupler(240) for varying the output intensity of the optical fiber, a band pass filter(260) for varying and filtering the optical wavelength, the first and second band pass filters(300,340), and an oscilloscope(340).