1 March 2001 Effect of temperature on the loss of the As-S-Se and Ge-As-Se-Te chalcogenide glass fibers
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Proceedings Volume 4204, Fiber Optic Sensor Technology II; (2001) https://doi.org/10.1117/12.417422
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States
Abstract
The change in the absorption loss relative to room temperature of the IR-transmitting sulfur-based (As-S-Se) and tellurium-based (Ge-As-Se-Te) glass fibers in the temperature range of-110°C? T? 110°C was investigated. For the sulfur-based (As-S-Se) glass fibers, the change in loss relative to room temperature was slightly affected by temperature in the wavelength region of 1-5 ?m. For ? ? 6 ?m, the change in loss was mainly due to multiphonon absorption. For the tellurium-based (Ge-As-Se-Te) glass fibers, the attenuation increased significantly at T 40°C. This is mainly attributed to thermally activated free carriers associated with the semi-metallic character ofthe Te atom. For ? ? 4.2 ?m, the loss due to electronic and free carrier absorption was strongly affected by temperature. In the wavelength region of 5 - 11 ?m, the loss was mainly due to free carrier absorption. Beyond ?? 1 1 ?m, multiphonon absorption dominated the loss spectrum at T ? 60°C while free carrier absorption contributed mainly to the total loss at T 80°C.
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Vinh Q. Nguyen, Jasbinder Singh Sanghera, Frederic H. Kung, Pablo C. Pureza, Robert E. Miklos, Ishwar D. Aggarwal, Isabel K. Lloyd, "Effect of temperature on the loss of the As-S-Se and Ge-As-Se-Te chalcogenide glass fibers", Proc. SPIE 4204, Fiber Optic Sensor Technology II, (1 March 2001); doi: 10.1117/12.417422; https://doi.org/10.1117/12.417422
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