Preparation and characterization of the As40Se60 and As38.8Se61.2 glasses with high quality for the single mode IR glass fiber

作者：Oh Min Suk; Seo Inseok^*

来源：Optical Fiber Technology, 2015, 21: 176-179.

DOI：10.1016/j.yofte.2014.11.004

• As-Se glasses
• Optical materials
• Glass fiber
• Refractive index

In this paper, high quality chalcogenide infrared-transmitting As40Se60 and As38.8Se61.2 glasses were prepared and characterized for single mode glass fibers. In order to obtain high purity glasses, the starting materials, As and Se (99.9999%), were purified using a distillation method, which required heat treatment under vacuum using silica tubes and a liquid N-2 trap system. As40Se60 and As38.8Se61.2 glasses are chosen as core and cladding, respectively. From the differential scanning calorimetry (DSC) results, the glass transition temperature (T-g) of the As40Se60 and As38.8Se61.2 glasses was 183 degrees C and 173 degrees C, respectively. Infrared transmission of the two glasses shows good transmittance over the range of 1-12 mu m. There is a slight absorption in both glasses at similar to 4.4 mu m which is related to Se-H bonds. In order to measure the refractive index over the range of similar to 2 -12 mu m, prisms of 40 mm x 40 mm x 15 mm with 20 degrees angles were made and were carefully polished. It was found that the refractive indices of As40Se60 were slightly higher than those of the As38.8Se61.2.

• 出版日期2015-1