Patent ID: 7277222

Claim:
An apparatus for wavelength conversion and clock signal extraction, the apparatus comprising: a wavelength converter receiving an input pump beam having input information and an input probe beam having a different wavelength from the input pump beam, and outputting a signal comprising: a pump beam with an overshoot component shifted to a red wavelength and an undershoot component shifted to a blue wavelength due to non-linear characteristics and sell-phase modulation of semiconductor optical amplifiers (SOAs); and a probe beam having the input information of the pump beam duplicated therein; an optical divider dividing output paths of the probe beam having the input information duplicated therein and the pump beam having the overshoot component and the undershoot component; a converted-wavelength extractor filtering out the probe beam from the signal received from the optical divider; and a clock data regenerator obtaining a pseudo return-to-zero (PRZ) signal from the pump beam of the wavelength converted signal received from the optical divider and extracting a clock signal from the PRZ signal.