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Open AccessArticle

Dispersion-Engineered Step-Index Tellurite Fibers for Mid-Infrared Coherent Supercontinuum Generation from 1.5 to 4.5 μm with Sub-Nanojoule Femtosecond Pump Pulses

1
Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-UBFC, 9 av. Alain Savary, BP 47870, 21078 Dijon, France
2
Research Center for Advanced Photon Technology, Toyota Technological Institute 2-12-1, Hisataka, Tempaku, Nagoya 468-8511, Japan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(10), 1875; https://doi.org/10.3390/app8101875
Received: 17 September 2018 / Revised: 28 September 2018 / Accepted: 6 October 2018 / Published: 11 October 2018
Mid-infrared supercontinuum generation from 1.5 to 4.5 µm with sub-nanojoule femtosecond pump pulses is demonstrated by using a short segment of dispersion-engineered step-index tellurite fiber with very low OH content. Distinct group-velocity dispersion regimes in a simple design of step-index tellurite fiber are also reported, which allows to choose the nonlinear pulse propagation regime according to the required tailoring of the supercontinuum source. Numerical simulations based on the generalized nonlinear Schrödinger equation are used to determine optimized fiber parameters before experimental demonstrations. We also analyse the coherence properties of the resulting supercontinuum sources. View Full-Text
Keywords: optical fibers; tellurite glasses; supercontinuum generation; nonlinear optics; mid-infrared light sources optical fibers; tellurite glasses; supercontinuum generation; nonlinear optics; mid-infrared light sources
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Froidevaux, P.; Lemière, A.; Kibler, B.; Désévédavy, F.; Mathey, P.; Gadret, G.; Jules, J.-C.; Nagasaka, K.; Suzuki, T.; Ohishi, Y.; Smektala, F. Dispersion-Engineered Step-Index Tellurite Fibers for Mid-Infrared Coherent Supercontinuum Generation from 1.5 to 4.5 μm with Sub-Nanojoule Femtosecond Pump Pulses. Appl. Sci. 2018, 8, 1875.

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