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Published on: March 20, 2017
Fast, optically controlled Kerr phase shifter for digital signal processing
1Physical Measurements Laboratory, National Institute of Standard and Technology, Gaithersburg, Maryland 20899, USA.
Abstract:
We demonstrate an optically controlled Kerr phase shifter using a room-temperature 85Rb vapor 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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