Open AccessExperimental generation of parabolic pulses via Raman amplification in optical fiber
Author(s) -
Christophe Finot,
Guy Millot,
Cyril Billet,
John M. Dudley
Publication year - 2003
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.11.001547
Subject(s) - optics , chirp , pulse compression , bandwidth limited pulse , materials science , dispersion (optics) , pulse (music) , self phase modulation , amplifier , ultrashort pulse , optical amplifier , pulse duration , physics , optoelectronics , nonlinear optics , laser , telecommunications , radar , cmos , detector , computer science
Parabolic pulse generation via Raman amplification is experimentally demonstrated in 5.3 km of non-zero dispersion shifted fiber presenting normal group velocity dispersion at the injected signal pulse wavelength of 1550 nm. The fiber is pumped by a commercially-available continuous wave source at 1455 nm, and the intensity and chirp of the amplifier output are characterized using frequency-resolved optical gating. For 2.4 pJ input pulses of 10 ps duration, the output pulse characteristics are studied as a function of amplifier gain over the range 11-24 dB, allowing the evolution of the input pulse to a parabolic pulse to be clearly seen for amplifier gains exceeding 15 dB. Numerical compression of the output pulses show that near chirp-free pulses can be obtained using only linear chirp compensation.