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Single-mode Low-loss Optical Fibers for Long-wave Infrared Transmission

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We report the synthesis of single-mode fibers made of chalcogenide glasses with low-loss in the 5–12 µm range. Glasses from the Ge-As-Te-Se system were optimized to prevent nucleation and to exhibit low density of charge carriers. Single mode fibers were obtained through the rod-in-tube method by substituting 2% Te/Se between the core and cladding glasses. The resulting single mode fibers had a core diameter of 30 µm and exhibited losses of ~6dB/m at 10.6 µm and as low as 3–4 dB/m in the 6–10 µm range.

© 2011 Optical Society of America

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