Staas & Halsey LLP
Optical communication method and optical communication system based on optical phase conjugation
 An optical communication system comprising means for modulating a plurality of light carriers and then performing frequency division multiplexing on the modulated light carriers to generate a frequency division multiplexed light, a first single-mode fiber for transmitting the frequency division multiplexed signal light, means for generating a frequency division multiplexed signal light corresponding to a phase conjugate wave of the transmitted frequency division multiplexed signal light, and a second single-mode fiber for transmitting the frequency division multiplexed phase conjugate light. In the disclosed optical communication system, appropriate setting of parameters such as a mean light intensity of each fiber permits to eliminate an effect of channel-to-channel crosstalk. 
Fujitsu Limited
H H
H04J H04B
additional inventional
Shigeki
Watanabe