Patent ID: 7228023
Filing Date: 2007-06-05
Classification: G02B,G02F

Abstract:
1. An apparatus, comprising: a Mach-Zehnder Interferometer (MZI) disposed in semiconductor material, the MZI having first and second arms; wherein an optical beam is to propagate through the MZI in a forward direction; and first and second optical modulators disposed in the first and second arms, respectively, of the MZI, the first and second optical modulators having traveling wave electrodes coupled to receive first and second traveling wave signals, respectively, to generate traveling waves in the MZI that propagate in a reverse direction opposite to the forward direction, the first and second traveling wave signals to have a pi phase shift relative to each other such that there is constructive interference of the optical beam propagating through the MZI in the forward direction and there is destructive interference of an optical beam propagating through the MZI in the reverse direction.