Abstract

Frequency conversion of a continuous light wave based on multistage phase modulation has been investigated both analytically and numerically. The proposed frequency-conversion process consists of three stages: (i) phase modulation and chirp compression to generate a pulse train, (ii) Doppler shift of the pulse center frequency in a second phase modulation, and (iii) demodulation of the pulse train. By controlling the modulation power we can select the destination frequency from an equally spaced grid separated by the modulation frequency. A conversion efficiency of 40% has been numerically confirmed with respect to a destination frequency of ±50 channels. Carrier frequency conversion of an analog data stream is numerically demonstrated.

© 2006 Optical Society of America

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