Patent ID: 9148228
Filing Date: 2015-09-29
Classification: H01S,H04B,H04J

Abstract:
1. An optical signal transmitting device, comprising: a plurality of direct modulators configured to be driven using electric signals of a plurality of channels to generate directly-modulated optical signals of a plurality of channels; a beat light source configured to generate beat light at a specific frequency spacing; a plurality of subcarrier converters configured to modulate, using the beat light from the beat light source, the directly-modulated optical signals of the plurality of channels from the plurality of direct modulators to generate optical subcarrier modulation signals of a plurality of channels; probe light sources configured to generate probe light of a plurality of channels having frequencies that are different from frequencies of the directly-modulated optical signals of the plurality of channels; a plurality of multiplexers configured to multiplex, for individual channels, the optical subcarrier modulation signals of the plurality of channels with the probe light of the plurality of channels; and a plurality of nonlinear optical media configured to perform, for individual channels, optical cross modulation for the optical subcarrier modulation signals and the probe light, which are multiplexed, and transmit processed signals.