Effect of temperature on the loss of the As-S-Se and Ge-As-Se-Te chalcogenide glass fibers

Vinh Q. Nguyen; Jasbinder Singh Sanghera; Frederic H. Kung; Pablo C. Pureza; Robert E. Miklos; Ishwar D. Aggarwal; Isabel K. Lloyd

doi:10.1117/12.417422

1 March 2001 Effect of temperature on the loss of the As-S-Se and Ge-As-Se-Te chalcogenide glass fibers

Vinh Q. Nguyen, Jasbinder Singh Sanghera, Frederic H. Kung, Pablo C. Pureza, Robert E. Miklos, Ishwar D. Aggarwal, Isabel K. Lloyd

Author Affiliations +

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, and 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); https://doi.org/10.1117/12.417422

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