Highly efficient optical wavelength converter without spectral spread using synchronous phase/frequency modulation

摘要

An all optical wavelength converter utilizing four-wave mixing (FWM) in optical fibers is one of the key devices for realizing all optical routing or switching in photonic networks. In order to enhance the conversion efficiency, it is the most effective to increase the pump power. However, the maximum pump. power is limited by the stimulated Brillouin scattering.(SBS) in optical fibers. It is possible to suppress the SBS by the spread spectrum (SS) scheme, but this scheme has a disadvantage that the spectrum of the converted light is also spread, and as the result degraded by the chromatic. dispersion in optical fibers. In this paper, we propose and demonstrate a highly-efficient wavelength conversion technique with phase or frequency modulation of both pump and signal lights.