Patent ID: 7006726
Filing Date: 2006-02-28
Classification: H04B,H04J

Abstract:
1. A method, comprising: generating first and second optical signals; amplitude modulating an incoming data signal onto the first optical signal to generate a data optical signal; amplitude modulating a frequency comb having equal channel spacing onto the second optical signal to generate a plurality of local oscillator optical signals; passing the data optical signal through an optical waveguide optically coupled to each of N first optical resonators, each first optical resonator having a different predetermined resonant frequency corresponding to a different predetermined channel of the frequency comb to remove that channel from the data optical signal; passing the local oscillator optical signals through an optical waveguide optically coupled to each of N second optical resonators, each second optical resonator having a resonant frequency substantially equal to the resonant frequency of a corresponding first optical resonator to remove the corresponding local oscillator optical signal; and summing the channel and local oscillator optical signal removed by each corresponding pair of first and second optical resonators having equal resonant frequencies in a preselected one of N photodetectors to generate N sub-band data signals.