We report recent progress on fabrication of solid core microstructured fibers in chalcogenide glass. Several complex and regular holey fibers from Ga5Ge20Sb10S65 chalcogenide glass have been realized. We demonstrate that the "Stack & Draw" procedure is a powerful tool against crystallisation when used with a very stable chalcogenide glass. For a 3 ring multimode Holey Fiber, we measure the mode field diameter of the fundamental mode and compare it successfully with calculations using the multipole method. We also investigate, via numerical simulations, the behaviour of fundamental mode guiding losses of microstructured fibers as a function of the matrix refractive index, and quantify the advantage obtained by using a high refractive index glass such as chalcogenide instead of low index glass.

Abstract:We provide a complete experimental characterization of stimulated Brillouin scattering in a 160 m long solid-core photonic crystal fiber, including threshold and spectrum measurements as well as positionresolved mapping of the Brillouin frequency shift. In particular, a three-fold increase of the Brillouin threshold power is observed, in excellent agreement with the spectrally-broadened Brillouin gain spectrum. Distributed measurements additionally reveal that the rise of the Brillouin threshold results from the broadband nature of the gain spectrum all along the fiber and is strongly influenced by strain. Our experiments confirm that these unique fibers can be exploited for the passive control or the suppression of Brillouin scattering. Brillouin shift along single-mode optical fibres," Opt. Lett. 4, 1128Lett. 4, -1130Lett. 4, (2004. 11. R. Tkach, A. R. Chraplyvy and R. M. Derosier, "Spontaneous Brillouin scattering for single-mode optical fiber characterization," Electron. Lett. 22, 1011Lett. 22, -1012Lett. 22, (1986. 12. P. Bayvel and P. M. Radmore "Solutions of the SBS equations in single mode optical fibers and implications for fiber transmission systems," Electron. Lett. 26, 434-435 (1990). 13. R. G. Smith, "Optical power handling capacity of low loss optical fibers as determined by stimulated Raman and Brillouin scattering," Appl. Opt. 11, 2489-2494 (1972

International audienceIn this paper, we investigate the linear and nonlinear properties of GeSbS and AsSe chalcogenide photonic crystal fibers. Through several experimental setups, we have measured the second- and third-order chromatic dispersion, the effective area, losses, birefringence, the nonlinear Kerr coefficient as well as Brillouin and Raman scattering properties

We have made a systematic investigation of the Zeeman splitting of nϭ1 heavy-hole excitons in a range of Al 0.36 Ga 0.64 As/GaAs and In x Ga 1Ϫx As/GaAs ͑xϭ0.08 and 0.11͒ quantum wells at 1.8 K and in magnetic fields of up to 6 T applied along the growth axis ͑001͒. Calculations of splitting as a function of field were made using an eight-band K-P model which reproduce all the main features of the experimental data, including the sign, and give good quantitative agreement. The observed splittings are linear in low field ͑Ͻ1 T͒, but become nonlinear as field is increased. This behavior is attributed to a spin-dependent field-induced admixture between the light-and heavy-hole valence bands. For the GaAs/AlGaAs system agreement between experiment and theory requires a value for the Luttinger parameter in bulk GaAs close to 1.2 which is the generally accepted value, and rules out a lower value ͑0.7͒ which was proposed recently. From the theoretical fits to the In x Ga 1Ϫx As/GaAs Zeeman data we find that there is significant ''bowing'' of (x) which can be reproduced accurately using a perturbation theory relating the Luttinger and ␥ parameters, where ␥ 1,2,3 are obtained from experimentally determined light-and heavy-hole effective masses. ͓S0163-1829͑97͒05624-5͔

No abstract