Development of low-loss IR optical fibers for optical sensors

Jasbinder Singh Sanghera; Ishwar D. Aggarwal

doi:10.1117/12.199657

19 January 1995 Development of low-loss IR optical fibers for optical sensors

Jasbinder Singh Sanghera, Ishwar D. Aggarwal

Proceedings Volume 2367, Optical Sensors for Environmental and Chemical Process Monitoring; (1995) https://doi.org/10.1117/12.199657
Event: Optical Sensing for Environmental and Process Monitoring, 1994, McLean, VA, United States

Abstract

We have fabricated stable sulphide and telluride based chalcogenide glasses and characterized their properties. The glasses do not exhibit crystallization upon reheating up to and beyond the fiber draw temperature. We have drawn unclad telluride fibers with a minimum attenuation of 0.11 dB/m at 6.6 micrometers which represents the lowest loss reported for a chalcogenide glass containing high levels of Te. Preliminary core/clad telluride and sulphide glass fibers have been drawn using the rod-in-tube process with a minimum loss of 0.7 dB/m at 6.6 micrometers and 0.6 dB/m at 4.89 micrometers , respectively. Improvements in glass quality and processing utilizing the rod-in-tube and double crucible techniques will lead to lower losses. We also demonstrate the capability of the telluride fibers for evanescent sensing of numerous organic and inorganic liquids and their mixtures in the 3 - 12 micrometers region.

Citation Download Citation

Jasbinder Singh Sanghera and Ishwar D. Aggarwal "Development of low-loss IR optical fibers for optical sensors", Proc. SPIE 2367, Optical Sensors for Environmental and Chemical Process Monitoring, (19 January 1995); https://doi.org/10.1117/12.199657

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