Exploiting dispersion of higher-order-modes using M-type fiber for application in mid-infrared supercontinuum generation

D. Jain*, C. Markos, T. M. Benson, A. B. Seddon, O. Bang

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

M-type fibers have the exceptional property that the higher-order LP0n modes are core-confined and easily excited, while the LP01 and other modes are confined to a high-index ring surrounding the core, so they are not easily excited. This has profound consequences for mid-infrared supercontinuum sources, where the high zero-dispersion wavelength of chalcogenide and ZBLAN fibers means that exotic pump sources have so far been necessary. We show here that in chalcogenide and ZBLAN M-type fibers the lower ZDW of the core-confined higher-order LP02 mode can be in the range of 2 to 3 µm (around 1.55 µm), while the fiber still has a large core diameter and thus supports high average power. This will allow established pump laser technology to be used in future high-power mid-infrared supercontinuum sources.

Original languageEnglish
Article number8536
JournalScientific Reports
Volume9
Issue number1
Number of pages11
ISSN2045-2322
DOIs
Publication statusPublished - 1 Dec 2019

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