Patent ID: 8340478

Claim:
An optical modulator, comprising: a first optical waveguide comprising an input port and a through port, the input port for receiving an input signal; a first optical resonator optically coupled to the first optical waveguide, the first optical resonator being optically active and interfacing with a driver that continuously optically modulates the input signal between a first modulation state and a second modulation state; a second optical waveguide optically coupled to the first optical resonator and comprising a drop port; and a coupling structure optically coupling the first optical waveguide to the second optical waveguide, wherein (i) in the first modulation state, a transfer function from the input port to the through port comprises a transmission zero at a frequency of the input signal, and (ii) in the second modulation state, a transfer function from the input port to the drop port comprises a transmission zero at the frequency of the input signal.