Open AccessGeneration of squeezed vacuum pulses at 810 nm using a 40-cm-long optical fiber
Author(s) -
Hisayuki Nakagome,
Hidetake Ushio,
Yasuyuki Itoh,
Fumihiko Kannari
Publication year - 2011
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.19.001051
Subject(s) - optics , brillouin scattering , materials science , optical fiber , fiber laser , polarization maintaining optical fiber , laser , fiber optic sensor , physics
We experimentally demonstrate the generation of a squeezed vacuum pulse at 810 nm with a fiber polarization interferometer. During femtosecond laser pulse propagation through an optical fiber in the normal dispersion regime, only self-phase modulation within a short length contributes to pulse squeezing since the laser pulse is immediately broadened. Guided acoustic-wave Brillouin scattering (GAWBS) noise that increases in proportional to the fiber length is also lower with shorter fibers. Consequently, a maximum noise reduction of 2.1 dB (4.8 dB when corrected for losses) is obtained using a 40-cm-long single mode optical fiber.