Patent ID: 7430348

Claim:
An optical device, comprising: a first optical fiber having a first end, a second end and a tapered portion located between said first and second ends, said tapered portion being formed in a substantially 180° first loop so that said first and second ends are oriented generally parallel to one another; a second optical fiber having a first end, a second end and a tapered portion located between said first and second ends, said tapered portion being formed in a substantially 180° second loop so that said first and second ends are oriented generally parallel to one another; said first loop and said second loop being positioned relative to one another to collectively form a ring resonator, optical power propagating within one of said first and second optical fibers being input to said ring resonator by evanescent field coupling, said optical power completing a circuit within said ring resonator by transitioning between said first loop and said second loop at two points of coupling.