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1. Determination of the nonlinear refractive index of multimode silica fiber with a dual-line ultra-short pulse laser source by using the induced grating autocorrelation technique

Author

Anthony M. Johnson, Elaine Lalanne, and Aboubakar Traore

Subjects
Materials science, Optical fiber, Multi-mode optical fiber, business.industry, Graded-index fiber, Atomic and Molecular Physics, and Optics, law.invention, Optics, Fiber Bragg grating, law, Fiber laser, Dispersion-shifted fiber, business, Hard-clad silica optical fiber, Photonic-crystal fiber
Abstract

We measured, within 6% accuracy, the nonlinear refractive index (n2) of 10 meter long multimode silica fiber of 17μm core diameter, using a modified induced grating autocorrelation technique (IGA). This measurement technique, based on time-delayed two beam coupling in a photorefractive crystal has been used to accurately measure n2 in short lengths of single mode fibers. For the first time to our knowledge, IGA is used to measure n2 of multimode fiber with a passively modelocked Nd:YVO4 laser operating with a dual-line near 1342 nm.

Published
2015

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