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Proceedings Paper

Bending Properties Of Large Core Optical Fibers Used For Medical Therapy
Author(s): Sadao Chigira; Tateyuki Oohashi; Kazuo Sanada; Koichi Inada
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Paper Abstract

Transmission characteristics of silica based large core fibers ( SLF ) have been investigated. Concerning with the spectral loss in ultra violet region, a pure silica core and B,F doped silica cladding fiber showed the lowest value approximately 3 dB/m at 200 nm wavelength. It has been clarified that the bending loss of SLF strongly depends on the Numerical Aperture and core diameter. It has been found that excess loss due to bending has the methodical relations with core diameter and bending diameter. On the other hand, a fiber was fractured by about 20 times of its diameter. As a result, it has been clarified that large NA fiber has the advantage in laser surgery. This paper describes the details of the transmission characteristics and the mechanical reliability of SLF for medical usage.

Paper Details

Date Published: 15 June 1989
PDF: 4 pages
Proc. SPIE 1067, Optical Fibers in Medicine IV, (15 June 1989); doi: 10.1117/12.952125
Show Author Affiliations
Sadao Chigira, Fujikura Ltd (Japan)
Tateyuki Oohashi, Fujikura Ltd (Japan)
Kazuo Sanada, Fujikura Ltd (Japan)
Koichi Inada, Fujikura Ltd (Japan)

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

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