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Fabrication and characterization of Ge20Sb15S65chalcogenide glass for photonic crystal fibers

Author:
Yi, Changshen   Zhang, Peiqing   Chen, Feifei   Dai, Shixun   Wang, Xunsi   Xu, Tiefeng   Nie, Qiuhua  


Journal:
Applied Physics B


Issue Date:
2014


Abstract(summary):

Chalcogenide glasses are known for their high transparency in the mid-infrared (IR) range, which includes two atmospheric windows that lie from 3 to 5 mu m and 8 to 12 mu m, respectively. Chalcogenide photonic crystal fibers have numerous potential applications in the field of IR, such as spectroscopy, microscopy, astronomy, biology, and sensing. In this paper, Ge20Sb15S65 chalcogenide glass was fabricated and systematically studied. Chalcogenide glass has high transmission property (> 70 %), good thermal stability, and good mechanical stability. The glass transition temperature T (g) is 296 A degrees C, and no exothermic peak was associated with crystallization up to 500 A degrees C, which indicates its suitability for fiber drawing. As a result of its excellent mechanical properties, preforms with a variety of geometrical patterns were fabricated by using mechanical drilling. The near-field intensity distribution image of the drawn fiber shows a strong light propagation confinement.


Page:
653-658


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