Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 27, Issue 5, Pages 966-971Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.27.000966
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Funding
- NSF-DMR [0806333]
- NSF-ECCS [0901069]
- CNRS International Associated Laboratory, Materials Optics
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0806333] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0901069] Funding Source: National Science Foundation
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We demonstrate the use of photoinduced fluidity in low-loss chalcogenide fibers for producing tapers with fine control of the diameter and geometry. The tapers produced this way act as sensing zones along chalcogenide glass fibers used for evanescent wave spectroscopy. The optical microfabrication method consists in irradiating the chalcogenide fiber with sub-bandgap laser light under a tensile stress. The resulting athermal photoinduced fluidity permits to produce tapers with good control over the geometry without altering the optical properties of the fiber. Gains in detection sensitivity greater than 1 order of magnitude are measured using these tapers. (C) 2010 Optical Society of America
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