Patent ID: 7599596
Filing Date: 2009-10-06
Classification: G02B,G02F

Abstract:
1. An optical device, comprising: a waveguide defined in a layer of silicon positioned on a base, the waveguide being immobilized relative to the base along the length of the waveguide, a groove configured to receive an optical fiber, the groove positioned such that when the optical fiber is positioned in the groove the waveguide receives a light signal that exits a facet of the optical fiber; a light sensor configured to receive the light signal from the waveguide after the light signal is received by the waveguide, is guided through the waveguide, and exits the waveguide, a tunable optical attenuator configured to attenuate the light signal as the light signal travels along the waveguide; and wherein the base includes an optical insulator on a substrate, the optical insulator including silica and the substrate including silicon.