A reliable method for measurement of the nonlinear refractive index through application of multi wavelength phenomenon. Multi wavelength realisation based on Erbium doped fibre laser (EDFL) is proposed and experimentally demonstrated. A combination of 15 m high efficiency Erbium doped fibre (EDF) and a 20 m Photonic Crystal Fibre (PCF) as main catalyst to suppress the homogenous broadening of EDF and to obtain highly stability of multi wavelength through insertion of a set of fibre Bragg gratings (FBGs) in the cavity. This PCF has zero dispersion of 1040 nm which mismatch from transmission window of 1550 nm. A reliable repeatability of multi wavelength based on multiple configuration of FBGs less than 0.2% obtained. This consistent results influence in determination of nonlinear refractive index by relation of four wave mixing (FWM).

Date Published: 1 June 2015
PDF: 4 pages
Proc. SPIE 9520, Integrated Photonics: Materials, Devices, and Applications III, 95200Q (1 June 2015); doi: 10.1117/12.2178252

Published in SPIE Proceedings Vol. 9520:
Integrated Photonics: Materials, Devices, and Applications III
Jean-Marc Fédéli, Editor(s)