Development of low-loss IR optical fibers for optical sensors
- Naval Research Lab., Washington, DC (United States)
The authors have fabricated stable sulfide 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. They have drawn unclad telluride fibers with a minimum attenuation of 0.11 dB/m at 6.6 {micro}m which represents the lowest loss reported for a chalcogenide glass containing high levels of Te. Preliminary core/clad telluride and sulfide glass fibers have been drawn using the rod-in-tube process with a minimum loss of 0.7 dB/m at 6.6 {micro}m and 0.6 dB/m at 4.89 {micro}m, respectively. Improvements in glass quality and processing utilizing the rod-in-tube and double crucible techniques will lead to lower losses. They also demonstrate the capability of the telluride fibers for evanescent sensing of numerous organic and inorganic liquids and their mixtures in the 3--12 {micro}m region.
- OSTI ID:
- 276304
- Report Number(s):
- CONF-9411144--; ISBN 0-8194-1713-0
- Country of Publication:
- United States
- Language:
- English
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