Fabrication of complex structures of Holey Fibers in Chalcogenide glass

Abstract

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.

Strong infrared spectral broadening in low-loss As-S chalcogenide suspended core microstructured optical fibers

“…Such a control of the chromatic dispersion can be obtained using two kinds of MOF profiles: the conventional one based on a subset of a triangular lattice of holes and the suspended core one. Nevertheless, the former design with its required tiny pitches needs too many rings of holes for the current chalcogenide MOF technology to get guiding losses below material ones [11,20,26]. Consequently, only the suspended core profile can be currently considered to reach our objective.…”

“…It is well known that chalcogenide glasses are promising candidates for such improvements, and thus they have an important potential for non linear optics [5][6][7]. During the last decade, a great attention has been paid to the development of chalcogenide glass waveguides, including microstructured optical fibres, for different applications such as light amplification, optical regeneration and supercontinuum generation [8][9][10][11][12][13][14][15][16][17]. In this context, the ability to elaborate efficient highly non linear single-mode chalcogenide optical fibres, with desired performance parameters, as well as the development of approaches to monitor these parameters are of great importance.…”

“…These glasses are up to now the best compromise between material infrared transparency and non linear coefficient [6,7], by comparison with other non oxide glasses, such as heavy oxide or fluoride glasses. However, the elaboration of low losses chalcogenide MOFs is still a challenging issue [11,[24][25][26]. Among the numerous chalcogenide glasses, we have chosen the arsenic trisulphide (As 2 S 3 ) glass.…”

Original designs of chalcogenide microstuctured optical fibers

“…A few years later, light guidance was obtained in sulfur and selenide chalcogenide MOFs [8,9]. Soon after, single mode propagation was demonstrated in Ge-Ga-Sb-S MOF presenting three rings of holes [10]. The optical losses of this first single-mode fiber reached 15-20 dB m −1 at 1·55 μm, due to the fabrication method [11].…”

Chalcogenide Glass Hollow-Core Microstructured Optical Fibers

“…In published papers on preparing chalcogenide MOFs with a solid-core, the following techniques of preform manufacturing have been used: "stack and draw" (assembly of capillaries inside the substrate tube) (Brilland et al, 2006;Desevedavy et al, 2008), molding (with use of silica glass pattern of the specified photonic crystal design) (Coulombier et al, 2010;Conseil et al, 2011), and drilling (El-Amraoui et al, 2010). Usually, the thin capillaries are drawn from the chalcogenide glass tube prepared by centrifugal casting.…”