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Proceedings Paper

Development of low-loss IR optical fibers for optical sensors
Author(s): Jasbinder Singh Sanghera; Ishwar D. Aggarwal
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Paper 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.

Paper Details

Date Published: 19 January 1995
PDF: 10 pages
Proc. SPIE 2367, Optical Sensors for Environmental and Chemical Process Monitoring, (19 January 1995); doi: 10.1117/12.199657
Show Author Affiliations
Jasbinder Singh Sanghera, Naval Research Lab. (United States)
Ishwar D. Aggarwal, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 2367:
Optical Sensors for Environmental and Chemical Process Monitoring
Ishwar D. Aggarwal; Stuart Farquharson; Eric Koglin, Editor(s)

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