Halide-chalcogenide glasses for optics and optical fibers

1997 ◽  
Author(s):  
Jan Wasylak ◽  
Maria Laczka ◽  
Jan Kucharski
Keyword(s):  
Optical Fibers ◽  
Chalcogenide Glasses

Chalcogenide glasses Ge–Sn–Se, Ge–Se–Te, and Ge–Sn–Se–Te for infrared optical fibers

1990 ◽  
Vol 5 (6) ◽  
pp. 1215-1223 ◽  
Author(s):  
I. Haruvi-Busnach ◽  
J. Dror ◽  
N. Croitoru
Keyword(s):  
Differential Scanning Calorimetry ◽  
Optical Fibers ◽  
Chalcogenide Glasses ◽  
Glass Composition ◽  
Amorphous Region ◽  
Maximum Power Density ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Ftir Spectrometry

Chalcogenide glasses of the systems Ge–Sn–Se, Ge–Se–Te, and Ge–Sn–Se–Te have been prepared. Several compositions were found suitable for drawing fibers for CO2 laser radiation (λ = 10.6 μm) transmission. The glasses were characterized by x-ray diffraction, DSC (Differential Scanning Calorimetry), SEM with EDX analysis, FTIR spectrometry, density, and microhardness measurements. The glass transition temperature and microhardness of Ge–Se–Sn and Ge–Sn–Se–Te glasses decreased with increasing Sn content, for most of the samples. The region of high IR transparency of Ge–Se–Sn, Ge–Se–Te, and Ge–Sn–Se–Te glasses was slightly expanded (1–2 μm) toward longer wavelengths, compared to Ge–Se glasses, mainly for the glasses containing 70 at.% Se. The intensity of the impurity absorption peak of Ge–O (at λ ∼ 12.8 μm), which usually appears in Ge–Se glasses, was reduced or absent in Ge–Sn–Se–Te glasses. The best fibers were produced with the glass composition Ge–0.8Sn0.2Se3.5Te0.5. An attenuation of 20 dB/m at 10.6 μm, and a transmitted maximum power density of 2.4 ⊠ 106 W/m2 were measured. The mechanical and optical characteristics of these glasses have been related to the glasses structure. Corresponding to the reduced masses of the bonds formed in the Ge–Sn–Se–Te system (in the amorphous region), it is expected that the multiphonon edge is slightly shifted. As a consequence, as was measured, the transparency region has been expanded by less than 2 μm toward longer wavelengths.

scholarly journals 3D printing of chalcogenide glasses: an original way for the elaboration of microstructured preforms and optical fibers (Conference Presentation)

2020 ◽  
Author(s):  
Johann Troles ◽  
Julie Carcreff ◽  
Francois Chevire ◽  
Elodie Galdo ◽  
Ronan Lebullenger ◽  
...  
Keyword(s):  
3D Printing ◽  
Optical Fibers ◽  
Chalcogenide Glasses

Glasses and Optical IR Fibers of As2Se3−xTex

1986 ◽  
Vol 88 ◽  
Author(s):  
N. Croitoru ◽  
N. Shamir ◽  
D. Mendlovic ◽  
J. Dror ◽  
Y. Lereah
Keyword(s):  
Mechanical Properties ◽  
Cross Section ◽  
Optical Fibers ◽  
Chalcogenide Glasses ◽  
Laser Light ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Infrared Region ◽  
Light Wavelength ◽  
Scanning Electron

ABSTRACTChalcogenide glasses of As2Se3−xTex (O<x<3) were made with special care, using very pure raw materials in order to avoid traces of oxygen. From these materials optical fibers were pulled, and the attenuation of CO2 laser light (wavelength λ = 10.6 μm) transmitted through these fibers was measured as a function of the Te content (x). The fiber's surface and cross-section were examined, using both the scanning electron and optical microscopes, and they directly revealed the increase in the concentration of the defects while x was increasing. The influence of the physical and mechanical properties on the concentration of defects was studied by measuring the optical absorption (α) and the microhardness (VH) of the raw materials. Slabs of As2Se3−xTex were made, and in these samples the α, VH, and glass transition temperature (Tg) as a function of x were measured. In the infrared region of the spectra at λ = 10.6 μm, the α in both the slabs and pulled fibers increased, and the VH and Tg decreased with the increase of x. This can be explained by the increase of the concentration of the defects (small crystallites) which appeared during the fiber pulling.

New Non-Oxide Glasses for Optical Waveguiding

1989 ◽  
Vol 152 ◽  
Author(s):  
Jacques Lucas
Keyword(s):  
Optical Fibers ◽  
Optical Waveguides ◽  
Chalcogenide Glasses ◽  
First Generation ◽  
Planar Waveguides ◽  
Oxide Glasses ◽  
New Class ◽  
New Family ◽  
Zirconium Tetrafluoride ◽  
Optical Waveguiding

ABSTRACTThe first generation of infrared optical waveguides operating in the mid I.R. region 0.3 to 4 μm is made from fluoride glasses based on zirconium tetrafluoride. A new family of vitreous materials based on indium fluoride appears to be also promising candidate. The state of art in the field including performances and limitations of these optical fibers will be described. A new class of heavy halide glasses based on tellurium chloride, bromide or iodide is presented in relation with their large optical transmission range covering the 8–12 μm region. First attempts in fiber preparation and planar waveguides deposition will be discussed and compared with the traditional chalcogenide glasses.

Glass Optical Guided-Wave Technology

1985 ◽  
Vol 60 ◽  
Author(s):  
T. Miyashita
Keyword(s):  
Optical Fibers ◽  
Communication Systems ◽  
Chalcogenide Glasses ◽  
Guided Wave ◽  
Infrared Wavelength ◽  
Wavelength Division ◽  
Silica Glasses ◽  
Wave Technology ◽  
New Family ◽  
High Silica

AbstractRecent advances of glass materials and fabrication processes will be reviewed in the field of guided-wave technology. A variety of optical fibers and guided-wave devices are in development by using high-silica and non-silica glasses. Following the successful development of silica fiber, a new family of optical fibers is being investigated by using non-silica glasses such as fluoride and chalcogenide glasses, which operate at mid-infrared wavelength range and offer the potential of ultra-low loss. High-silica channel waveguides are fabricated by processing a SiO2TiO2 planer waveguide on a silicon substrate. These are applied to various guided wave optical circuits such as switch and wavelength-division multi/demultiplexer, which would be used for the construction of optical communication systems. The materials and processing techniques influencing optical guided-wave performance are described.

scholarly journals Investigation on Chalcogenide Glass Additive Manufacturing for Shaping Mid-infrared Optical Components and Microstructured Optical Fibers

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 228
Author(s):  
Julie Carcreff ◽  
François Cheviré ◽  
Ronan Lebullenger ◽  
Antoine Gautier ◽  
Radwan Chahal ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Chalcogenide Glass ◽  
Optical Fibers ◽  
Chalcogenide Glasses ◽  
Optical Devices ◽  
Optical Components ◽  
Mid Infrared ◽  
Before And After ◽  
The Impact

In this work, an original way of shaping chalcogenide optical components has been investigated. Thorough evaluation of the properties of chalcogenide glasses before and after 3D printing has been carried out in order to determine the impact of the 3D additive manufacturing process on the material. In order to evaluate the potential of such additive glass manufacturing, several preliminary results obtained with various chalcogenide objects and components, such as cylinders, beads, drawing preforms and sensors, are described and discussed. This innovative 3D printing method opens the way for many applications involving chalcogenide fiber elaboration, but also many other chalcogenide glass optical devices.

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