Patent ID: 6885791

Claim:
An integrated-optic device comprising: a photorefractive substrate; at least one optical waveguide channel formed in the substrate, the waveguide channel having an input for receiving light coupled into the integrated-optic device and an output through which at least a fraction of the received light propagates; a first diffractive-Bragg grating formed in said substrate, the first diffractive-Bragg grating intersecting said optical waveguide channel; and a diffractive-Bragg grating modulator, the diffractive-Bragg grating modulator configured to modulate the first diffractive-Bragg grating, wherein modulating said first diffractive-Bragg grating by said diffractive Bragg grating modulator causes at least a fraction of the light coupled into the input of the waveguide channel to be coupled out of the waveguide channel at a location other than the input or output of the waveguide channel.