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

Patent metadata

Field	Value
Publication number	US-10193629-B2
Application number	US-201514853371-A
Country	US
Kind code	B2
Filing date	Sep 14, 2015
Priority date	Mar 19, 2010
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

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.

First claim

What is claimed is:

1. An optical network system comprising:
a nonlinear optical medium through which a first optical carrier having a first wavelength and a second optical carrier having a second wavelength propagate in opposite directions, the nonlinear optical medium configured to connect a first terminal and a second terminal and the first optical carrier propagating from the first terminal to the second terminal and the second optical carrier propagating from the second terminal to the first terminal;
the first terminal including:
an optical modulator which generates a modulated light based on a combined signal generated by combining a baseband signal with an RF (radio frequency) signal, multiplexes the modulated light on the first optical carrier and transmits the modulated light to the second terminal via the nonlinear optical medium, the RF signal being generated by modulating a carrier signal with an information;

the second terminal splits the modulated light from the first optical carrier and receives the RF signal or the baseband signal, multiplexes modulated data signals on the second optical carrier and transmits the modulated data signals to the first terminal via the nonlinear optical medium,
wherein the first terminal splits the modulated data signals from the second optical carrier and receives the modulated data signals.

Assignees

• Fujitsu Ltd

Inventors

• Watanabe Shigeki

Classifications

• H04J14/06

  Polarisation multiplex systems · CPC title

• H04B10/516

  Details of coding or modulation · CPC title

• H04B10/07955

  Monitoring or measuring power · CPC title

• G02F2/004 Primary

  Transferring the modulation of modulated light, i.e. transferring the information from one optical carrier of a first wavelength to a second optical carrier of a second wavelength, e.g. all-optical wavelength converter · CPC title

• G02F1/3519

  of Sagnac type, i.e. nonlinear optical loop mirror [NOLM] · CPC title