Patent ID: 7657131
Filing Date: 2010-02-02
Classification: G02F

Abstract:
1. An integrated circuit for modulating a continuous wave laser, comprising: a substrate upon which is constructed a pn junction with a depletion region there between to form an optical waveguide; a splitter construct over the substrate to split the optical waveguide into at least two branches; and in each branch, a metallic construct over the substrate coupled to the pn junction to modulate optical phase of the laser coupled into the optical waveguide according to an electrical modulating signal comprising data to be transmitted applied to each metallic construct, the metallic construct in a branch to receive a signal modulated at a rate of at least about 40 Giga bits per second and thereby modulate an index of refraction of a segment of optical waveguide at a rate of at least about 40 Giga bits per second.