DocumentCode
1281954
Title
Low-noise amplification under the 3 dB noise figure in high-gain phase-sensitive fibre amplifier
Author
Imajuku, W. ; Takada, A. ; Yamabayashi, Y.
Author_Institution
NTT Network Innovation Labs., Kanagawa, Japan
Volume
35
Issue
22
fYear
1999
fDate
10/28/1999 12:00:00 AM
Firstpage
1954
Lastpage
1955
Abstract
A noise figure which is less than the standard quantum limit of 3 dB has been observed for the first time in a high gain phase-sensitive fibre parametric amplifier. A noise figure of 1.8 dB with a 16 dB signal gain was measured by a precisely calibrated electrical spectrum analyser
Keywords
optical fibre amplifiers; optical noise; optical parametric amplifiers; spectral analysers; 1.8 dB; 16 dB; high-gain phase-sensitive fibre amplifier; low-noise amplification; noise figure; parametric amplifier; precisely calibrated electrical spectrum analyser; signal gain; standard quantum limit;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19991343
Filename
811081
Link To Document