Nonlinear multimodal interference and saturable absorption using a short graded-index multimode optical fiber
Abstract
A detailed investigation of the nonlinear multimodal interference in a short graded-index multimode optical fiber is presented. The analysis is performed for a specific device geometry, where the light is coupled in and out of the multimode fiber via single-mode fibers. The same device geometry was recently used to obtain ultra-low-loss coupling between two single-mode optical fibers with very different mode-field diameters. Our results indicate the potential application of this simple geometry for nonlinear devices, such as in nonlinear switching, optical signal processing, or as saturable absorbers in mode-locked fiber lasers. Saturable absorption in this all-fiber configuration is discussed and it is shown that it provides attractive properties that can potentially be used in high pulse energy mode-locked fiber lasers.
Cite
@article{arxiv.1302.3493,
title = {Nonlinear multimodal interference and saturable absorption using a short graded-index multimode optical fiber},
author = {Elham Nazemosadat and Arash Mafi},
journal= {arXiv preprint arXiv:1302.3493},
year = {2013}
}