%0 Journal Article 
%A Carrasco-Sanz, A.
%A Martín López, Sonia
%A González Herráez, Miguel
%A Corredera, Pedro
%A Hernanz, M.L.
%A Abrardi, L.
%T Generation of a reference frequency comb by cascaded four-wave mixing enhanced by Raman amplification
%D 2008
%@ 0030-4018
%U http://hdl.handle.net/10017/28459
%X The generation of standard reference frequencies close to the ITU channels is essential for the frequency calibration of DWDM systems. This paper describes the generation of a reference frequency comb based on the combination of a cascaded four-wave mixing in two semiconductor optical amplifiers and Raman amplification in a dispersion-shifted optical fiber. As a result we have achieved a stable frequency comb with 36 reference lines separated by a constant frequency spacing of 177 GHz. The seed of the comb is combination of two narrow-linewidth semiconductor lasers which are locked to two absorption lines of the acetylene (12C2H2).
%K Four-wave mixing
%K Frequency comb
%K Raman amplification
%K Semiconductor optical amplifier
%K Standard frequencies
%K Electrónica
%K Electronics
%~ Biblioteca Universidad de Alcala