Noise performance of a frequency nondegenerate phase-sensitive amplifier with unequalized inputs
Journal article, 2011

For the first time to our knowledge, the noise performance of a frequency nondegenerate phase-sensitive amplifier (PSA) with unequalized input powers has been experimentally characterized, based on a fiber-based parametric copier-PSA scheme. Two different noise-figure (NF) definitions-separate and combined NFs-are provided and compared. The results show that the separate NF of the weaker input wave is lower than that of the stronger wave due to the correlated-light nature. When considering the combined NF, the optimal noise performance (0 dB NF) is obtained only when the input powers are equal. Experiments agree well with the theoretical predictions. (C) 2011 Optical Society of America

amplification

parametric-amplifiers

field

quadrature

figure

Author

Zhi Tong

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Carl Peter Lundström

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

M. Vasilyev

University of Texas at Arlington

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Optics Letters

0146-9592 (ISSN) 1539-4794 (eISSN)

Vol. 36 5 722-724

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1364/OL.36.000722

More information

Created

10/8/2017