Patent ID: 6870974
Filing Date: 2005-03-22
Classification: H04B

Abstract:
1. An apparatus for generating phase conjugate light, comprising: a polarization beam splitter having first to fourth ports, said first and second ports and said third and fourth ports being coupled to each other by a first polarization plane, said first and third ports and said second and fourth ports being coupled to each other by a second polarization plane perpendicular to the first polarization plane; a nonlinear optical medium operatively connected between said second and third ports; a pump light source for outputting pump light; and coupling means for supplying signal light and the pump light to said first port of said polarization beam splitter; said coupling means including an optical coupler having first and second input ports for receiving the signal light and the pump light, respectively, and an output port, and a polarization maintaining fiber operatively connected between said output port and said first port.