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Proceedings Paper

Dual-Clad (Coat) Pure Silica Optical Fibers For Biosensors/Endoscopes
Author(s): B. J. Skutnik; J. P. Clarkin; R. E. Hille
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Paper Abstract

The whole field of biosensing has been enhanced by the development of optical fibers CIA. They provide a means of activating the sensors and of carrying the sensor's signal back to the monitoring system. The small dimensions and flexibility of the fibers allow the development of the miniaturized sensor packages capable of introduction into a patient's vascular system. In a similar fashion optical fibers have revolutionized endoscopic techniques. Smaller, more flexible probes are permitting longer pathlengths and easier, less intrusive inspection of internal body areas. Standard fibers provide lighting while special optical fibers or bundles provide viewing capability. During the next decade real time sensing in vivo together with various endoscopic and laser techniques will provide doctors and patients with many new and delicate alternative procedures to common surgery. Not only will trauma be minimized, but with better and quicker knowledge of the patient's blood gas levels and other body conditions, doctors will be able to efficiently correct for unforeseen difficulties while controlling the known problems effectively. In both these application areas, the optimum fibers will need to have large numerical apertures (NA) to improve the sensing efficiency or the lighting efficiency and they must be sturdy/reliable as well as flexible. This places stringent requirements on the optical and mechanical porperties of the fibers. This paper describes a new type of fiber, Dual-Clad (Coat), High NA, Hard Clad Silica (HCS*) Fibers, which have the required optical and mechanical porperties for these application areas and very high core/clad/coat ratios.

Paper Details

Date Published: 15 June 1989
PDF: 8 pages
Proc. SPIE 1067, Optical Fibers in Medicine IV, (15 June 1989); doi: 10.1117/12.952097
Show Author Affiliations
B. J. Skutnik, Ensign-Bickford Optics Company (United States)
J. P. Clarkin, Ensign-Bickford Optics Company (United States)
R. E. Hille, Ensign-Bickford Optics Company (United States)

Published in SPIE Proceedings Vol. 1067:
Optical Fibers in Medicine IV
Abraham Katzir, Editor(s)

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