Title

Fast, Optically Controlled Kerr Phase Shifter for Digital Signal Processing

Document Type

Article

Publication Date

2013

Publication Title

Optics Letters

DOI

10.1364/OL.38.001373

Abstract

We demonstrate an optically controlled Kerr phase shifter using a room-temperature Rb85vapor operating in a Raman gain scheme. Phase shifts from zero to π relative to an unshifted reference wave are observed, and gated operations are demonstrated. We further demonstrate the versatile digital manipulation of encoded signal light with an encoded phase-control light field using an unbalanced Mach–Zehnder interferometer. Generalizations of this scheme should be capable of full manipulation of a digitized signal field at high speed, opening the door to future applications.

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