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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 10477–10486

Optical signal to noise ratio improvement through unbalanced noise beating in phase-sensitive parametric amplifiers

R. Malik, A. Kumpera, S.L.I. Olsson, P.A. Andrekson, and M. Karlsson  »View Author Affiliations


Optics Express, Vol. 22, Issue 9, pp. 10477-10486 (2014)
http://dx.doi.org/10.1364/OE.22.010477


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Abstract

We investigate the beating of signal and idler waves, which have imbalanced signal to noise ratios, in a phase-sensitive parametric amplifier. Imbalanced signal to noise ratios are achieved in two ways; first by imbalanced noise loading; second by varying idler to signal input power ratio. In the case of imbalanced noise loading the phase-sensitive amplifier improved the signal to noise ratio from 3 to 6 dB, and in the case of varying idler to signal input power ratio, the signal to noise ratio improved from 3 to in excess of 20 dB.

© 2014 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Optical Communications

History
Original Manuscript: March 7, 2014
Revised Manuscript: April 12, 2014
Manuscript Accepted: April 16, 2014
Published: April 23, 2014

Citation
R. Malik, A. Kumpera, S.L.I. Olsson, P.A. Andrekson, and M. Karlsson, "Optical signal to noise ratio improvement through unbalanced noise beating in phase-sensitive parametric amplifiers," Opt. Express 22, 10477-10486 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-9-10477


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