Patent ID: 6252698
Filing Date: 2001-06-26
Classification: G02B,G02F

Abstract:
A method for wavelength conversion, comprising the steps of:(a) separating an optical signal received into a first polarization component having a first polarization plane and a second polarization component having a second polarization plane perpendicular to said first polarization plane;(b) supplying said first polarization component to a first optical waveguide structure over which a first surface acoustic wave propagates, in a direction identical with the propagation direction of said first surface acoustic wave;(c) supplying said second polarization component to a second optical waveguide structure over which a second surface acoustic wave propagates, in a direction opposite to the propagation direction of said second surface acoustic wave; and(d) combining first converted light output from said first optical waveguide structure and second converted light output from said second optical waveguide structure.