Patent ID: 6026205
Filing Date: 2000-02-15
Classification: G02B,G02F

Abstract:
A compound waveguide, comprising:a substrate for holding at least a portion of a first, elongate waveguide propagating an optical signal along a propagation axis thereof; anda second, channel waveguide positioned in optical proximity to the portion of the first waveguide, said second waveguide having a first, propagation axis aligned with the propagation axis of the portion of the first waveguide, said second waveguide further having a coupling surface through which optical energy is coupled to or from the optical signal propagating in the first waveguide;wherein the optical energy is coupled to or from said first waveguide by said second waveguide along an interaction area between said second waveguide and said first waveguide, the optical energy being coupled according to an oscillating energy transfer function, an interaction length of the interaction area being formed as a predetermined function of the oscillating energy transfer function.