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Proceedings Paper

Reduction Of The Scattering Loss Of Polycrystalline Fibers
Author(s): S. Kachi; K. Nakamura; M. Kimura; K. Shiroyama
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Paper Abstract

Scattering due to crystalline imperfections and roughness of the core surface limits the transmission loss of KRS-5 polycrystalline fiber severely, compared to its theoretical limit, in the middle IR wavelength region. Reduction of the loss by an annealing is described in this paper. The lowest loss was 0.12 dB/m at 10.6μm after an annealing at 150 °C for 2 hours. The accuracy of the measurement was better than 0.04 dB/m. To investigate the mechanism of the annealing effect, the change in the X-ray diffraction curve caused by the annealing was measured. The results indicate an improvement in the crystallinity by the annealing, which can be considered to be a main factor in the reduction of the transmission loss.

Paper Details

Date Published: 16 October 1984
PDF: 5 pages
Proc. SPIE 0484, Infrared Optical Materials and Fibers III, (16 October 1984); doi: 10.1117/12.943154
Show Author Affiliations
S. Kachi, Central Laboratory Of The Furukawa Electric Co. Ltd. (Japan)
K. Nakamura, Central Laboratory Of The Furukawa Electric Co. Ltd. (Japan)
M. Kimura, Central Laboratory Of The Furukawa Electric Co. Ltd. (Japan)
K. Shiroyama, Central Laboratory Of The Furukawa Electric Co. Ltd. (Japan)


Published in SPIE Proceedings Vol. 0484:
Infrared Optical Materials and Fibers III
Paul Klocek, Editor(s)

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