Open AccessNoise in phase-(in)sensitive dual-core fiber parametric amplification
Author(s) -
Vítor Ribeiro,
Abel Lorences-Riesgo,
Peter A. Andrekson,
Magnus Karlsson
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.004050
Subject(s) - optics , noise figure , low noise amplifier , physics , noise temperature , amplifier , effective input noise temperature , phase noise , noise spectral density , y factor , optical parametric amplifier , noise (video) , optical amplifier , optoelectronics , computer science , laser , cmos , artificial intelligence , image (mathematics)
Flat and wide-bandwidth gain spectrum, along with phase-sensitive gain with no need to generate amplifier input idlers, can be achieved with a coupled dual-core fiber optical parametric amplifier. In this paper, we analyze the noise properties of such an amplifier. We achieve a 3 dB noise figure in the phase-insensitive case and a minimum of -6 dB noise figure in the phase-sensitive configuration. An alternative phase-sensitive configuration is also studied, that avoids the use of idlers at the input of the amplifier, leading to a 3 dB flat spectrum combined noise figure for the output signals. Pump transfer noise in phase-insensitive and phase-sensitive configurations is also studied along with the noise figure variation against the length of the amplifier.