Patent ID: 6671426
Filing Date: 2003-12-30
Classification: G02B,G02F,H04J

Abstract:
A monolithically integrated optical device for routing or demultiplexing data, comprising:(a) a waveguide loop including a nonlinear element and a quadrature coupler connected at clockwise (CW) and counterclockwise (CCW) propagating ends of the waveguide loop; (b) a first input port for inputting data into the waveguide loop; (c) a second input port for injecting a control signal into the waveguide loop, the control signal determining the state of the nonlinear element; (d) a first output port for outputting data when the nonlinear element is in a first state; and (e) a second output port for outputting data when the nonlinear element is in a second state, wherein the second output port is independent of the waveguide loop, and the first input port is directly connected to the quadrature coupler.