WIDE-RANGE ALL-OPTICAL WAVELENGTH CONVERSION USING DUAL-WAVELENGTH-PUMPED FIBER RAMAN CONVERTER

A wavelength conversion scheme based on a fiber Raman converter is pro posed, in which an externally injected high power pump laser and the a ssociated Stokes laser are used to assist the Raman conversion process of signal light coded with optical information. Because the Raman gai n spectrum in fibers is extremely broad, a wavelength conversion devic e with wide-range tunability is feasible. We numerically demonstrate t hat wavelength conversion from 1.31 to 1.42 mu m can be realized using a fiber Raman converter at up to 10 Gb/s with an efficiency of 18%. I t is also demonstrated that wide range conversion from 1.31 to 1.55 mu m for optical fiber communication is feasible at up to 5 Gb/s when th e fiber Raman converters are-cascaded twice.