@article{625a16135c774b0f834d74360750e404,
title = "Thermally induced mode coupling in rare-earth doped fiber amplifiers",
abstract = "We present a simple semianalytical model of thermally induced mode coupling in multimode rare-earth doped fiber amplifiers. The model predicts that power can be transferred from the fundamental mode to a higher-order mode when the operating power exceeds a certain threshold, and thus provides an explanation of recently reported mode instability in such fiber amplifiers under high average-power operation. We apply our model to a simple step-index fiber design, and investigate how the power threshold depends on various design parameters of the fiber.",
author = "Hansen, \{Kristian Rymann\} and Alkeskjold, \{Thomas Tanggaard\} and Jes Broeng and Jesper L{\ae}gsgaard",
note = "This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-37-12-2382. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.",
year = "2012",
doi = "10.1364/OL.37.002382",
language = "English",
volume = "37",
pages = "2382--2384",
journal = "Optics Letters",
issn = "0146-9592",
publisher = "Optica Publishing Group (formerly OSA)",
number = "12",
}