Open AccessLD light antisqueezing through fiber propagation in reflection-type interferometer
Author(s) -
Tatsuya Tomaru
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.011241
Subject(s) - optics , interferometry , physics , optical fiber , reflection (computer programming) , total internal reflection , computer science , programming language
Antisqueezed light is a possible resource to apply quantum information technologies to the real world. When antisqueezed light is used in secure optical communications, an LD is a preferable light source from an engineering point of view. Although LD output power is low, LD light can be antisqueezed with the help of an EDFA in a reflection-type interferometer consisting of a standard single-mode fiber of typically 5 km. The ellipticity of the obtained antisqueezed light was 9 at maximum in a balanced interferometer case, and the angle that was subtended by antisqueezed fluctuations at the origin of phase space was 23 degrees at maximum. The feasibility of secure optical communications using antisqueezed light is demonstrated.