Reduction Of The Scattering Loss Of Polycrystalline Fibers

S. Kachi; K. Nakamura; M. Kimura; K. Shiroyama

doi:10.1117/12.943154

16 October 1984 Reduction Of The Scattering Loss Of Polycrystalline Fibers

S. Kachi, K. Nakamura, M. Kimura, K. Shiroyama

Proceedings Volume 0484, Infrared Optical Materials and Fibers III; (1984) https://doi.org/10.1117/12.943154
Event: 1984 Technical Symposium East, 1984, Arlington, United States

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.

Citation Download Citation

S. Kachi, K. Nakamura, M. Kimura, and K. Shiroyama "Reduction Of The Scattering Loss Of Polycrystalline Fibers", Proc. SPIE 0484, Infrared Optical Materials and Fibers III, (16 October 1984); https://doi.org/10.1117/12.943154

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