Patent ID: 8380083
Filing Date: 2013-02-19
Classification: H04B

Abstract:
1. An optical system for providing all-optical up-conversion of baseband signal comprising: an all-optical up-converter responsive to baseband signals to provide corresponding dual sideband signals about a suppressed optical carrier, said dual sideband signals each having the same polarization direction, being phase locked, having the same optical power and having a fixed frequency spacing; and an optical filter for filtering the carrier signals and providing wavelength division multiplexed signals without optical carriers; wherein the all-optical up-converter comprises: an intensity modulator for generating two pump lightwaves that correspond to a carrier suppressed in response to the intensity modulator receiving a laser light source and being driven by an RF signal; an optical combiner for combining the baseband signal and the two pump lightwaves; and a nonlinear medium for four wave mixing the baseband signal and two pump lightwaves to generate the baseband signal and corresponding dual sideband signals.