Abstract
The aim of this paper is to present an overview of the recent achievements of our group in the fabrication and optical characterizations of As(2)S(3) microstructured optical fibers (MOFs). Firstly, we study the synthesis of high purity arsenic sulfide glasses. Then we describe the use of a versatile process using mechanical drilling for the preparation of preforms and then the drawing of MOFs including suspended core fibers. Low losses MOFs are obtained by this way, with background level of losses reaching less than 0.5 dB/m. Optical characterizations of these fibers are then reported, especially dispersion measurements. The feasibility of all-optical regeneration based on a Mamyshev regenerator is investigated, and the generation of a broadband spectrum between 1 µm and 2.6 µm by femto second pumping around 1.5 µm is presented.
Highlights
Proposed for the first time in early 90’s by J
Despite the fact that the pumping of the fiber still occurs in the normal dispersion regime, since the zero dispersion wavelength (ZDW) of this fiber is close to 2.2 μm, these results are of great interest for the further development of efficient light conversion devices in the mid-infrared and of new supercontinuum sources working above 2 μm
We have presented here the recent achievements of our group in the fabrication and optical characterizations of As2S3 microstructured optical fibers (MOFs)
Summary
Proposed for the first time in early 90’s by J. It is well know that chalcogenide glasses exhibit high transparency in the mid-IR region (10-20 μm) together with high refractive index (n = 2.0 - 3.5) and high non linearity [5] This class of materials gathers good candidates for applications, and for nonlinear optics, in this spectral range [5,6]. We can manufacture preforms with various microstructures from simple ones to more complex ones This process appears quite promising in view of a large-scale production of chalcogenide MOFs. This process appears quite promising in view of a large-scale production of chalcogenide MOFs These fibers would be the base for the fabrication of optical amplifiers, chemical sensors, laser radiation transmission devices, IR fiber radiometers and for the development of new nonlinear fiber optics such as for example new supercontinuum sources exhibiting broadband generation in the infrared spectral range above 2 μm
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