Open AccessSlow light in multi-line Brillouin gain spectrum
Author(s) -
Zhiwei Lü,
Yongkang Dong,
Qiang Li
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.001871
Subject(s) - optics , bandwidth (computing) , brillouin scattering , physics , slow light , phase modulation , brillouin zone , laser , phase noise , telecommunications , computer science , photonic crystal
We present a method to achieve flat-top gain spectrum through overlapping multiple gain lines, which can be used to increase slow light bandwidth and relative pulse delay. A tunable gain bandwidth can be realized by changing the number of spectral lines and frequency separation between adjacent spectral lines. We demonstrate the method in a SBS-based slow light system. A phase modulator is used to modulate the phase of the pump wave, generating a pump wave with multi-line spectrum and achieving a Brillouin gain bandwidth of ~ 330 MHz.