Phase-locking in cascaded stimulated Brillouin scattering
Abstract
Cascaded stimulated Brillouin scattering (SBS) is a complex nonlinear optical process that results in the generation of several optical waves that are frequency shifted by an acoustic resonance frequency. Four-wave mixing (FWM) between these Brillouin shifted optical waves can create an equally spaced optical frequency comb with a stable spectral phase, i.e. a Brillouin frequency comb (BFC). Here, we investigate phase-locking of the spectral components of BFCs, considering FWM interactions arising from the Kerr-nonlinearity as well as from coupling by the acoustic field. Deriving for the first time the coupled-mode equations that include all relevant nonlinear interactions, we examine the contribution of the various nonlinear processes to phase-locking, and show that different regimes can be obtained that depend on the length scale on which the field amplitudes vary.
Keywords
Cite
@article{arxiv.1510.07348,
title = {Phase-locking in cascaded stimulated Brillouin scattering},
author = {Thomas F. S. Büttner and Christopher G. Poulton and M. J. Steel and Darren D. Hudson and Benjamin J. Eggleton},
journal= {arXiv preprint arXiv:1510.07348},
year = {2016}
}