Optical-signal processing apparatus, optical transmission method, receiver, and optical network system

摘要

In an optical network system: control light is generated by optical modulation based on a modulated data signal which is generated by modulation of a carrier signal with a data signal; and the control light is optically combined with an optical carrier which is to propagate through a nonlinear optical medium, so as to cause cross phase modulation of the optical carrier with the control light in the nonlinear optical medium.

主权项

1. An optical-signal processing apparatus comprising:
an optical modulator which modulates light with a subcarrier-modulated data signal and outputs a control light; and a nonlinear optical medium which performs cross phase modulation on a basis of an optical carrier and said control light by said optical modulator, wherein said control light is optically combined with said optical carrier to propagate through said nonlinear optical medium for causing said cross phase modulation of the optical carrier in said nonlinear optical medium and for causing information corresponding to the subcarrier-modulated data signal to multiplex on the optical carrier in succession; wherein the optical modulator modulates a plurality of subcarrier signals having different frequencies with a plurality of data signals, respectively, generates a plurality of modulated signals having different frequencies, combines the modulated signals, outputs the subcarrier-modulated data signal, and outputs the control light based on a driving current which is the subcarrier-modulated data signal.