Open AccessPhase-shifted Brillouin dynamic gratings using single pump phase-modulation: proof of concept
Author(s) -
Yongkang Dong,
Dengwang Zhou,
Lirong Teng,
Pengbai Xu,
Taofei Jiang,
Hongying Zhang,
Zhiwei Lü,
Liang Chen,
Xiaoyi Bao
Publication year - 2016
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.24.011218
Subject(s) - brillouin scattering , optics , phase modulation , materials science , brillouin zone , modulation (music) , bandwidth (computing) , optical fiber , physics , telecommunications , phase noise , computer science , acoustics
Two novel phase-shifted Brillouin dynamic gratings (PS-BDGs) are proposed using single pump phase-modulation (SPPM) in a polarization maintaining fiber (PMF) for the first time to our knowledge. Firstly, based on the stimulated Brillouin scattering (SBS), a transient PS-BDG with a 3-dB bandwidth of 354MHz is written by a 2-ns pump1 pulse and a 100-ps pump2 pulse, where the phase of pump1 pulse is shifted with π from its middle point through phase modulation. Then, with a high repetition rate of 250MHz for both pump pulses, an enhanced PS-BDG with a deep notch depth is obtained and its notch frequency can be easily tuned by changing the phase shift. We demonstrate a proof-of-concept experiment of the transient PS-BDG and show the notch frequency changing by tuning the phase shift. The proposed PS-BDGs have important potential applications in microwave photonics, all-optical signal processing and RoF (radio-over-fiber) networks.