Optical-Loss Characteristics of High GeO2 Content Silica Fibers
Summary :
Influence of high GeO2 concentration on the optical-loss in high numerical-aperture optical fibers has been investigated. It is shown that a large amount of OH ions are permanently trapped near Ge sites like near Si sites in binary GeO2-SiO2 glasses. The full Ge-OH absorption spectrum, including overtones, is very similar to the Si-OH spectrum but shifts to longer wavelength with increasing GeO2 concentration. Rayleigh scattering increases proportionally to GeO2 concentration and raises the transmission loss of the fibers, especially in shorter wavelength region. The minimum loss is, nevertheless, expected to be less than 1 dB/km even in the fibers containing GeO2 up to several tens of mol% because of a slight reduction of infrared absorption. The transmission loss of 0.8 dB/km at 1.55 µm was achieved by a 27 mol% GeO2-doped core fiber made by the VAD method.
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- IEICE TRANSACTIONS on transactions Vol.E63-E No.12 pp.837-841
- Publication Date
- 1980/12/25
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Noriyoshi SHIBATA, Masao KAWACHI, Takao EDAHIRO, "Optical-Loss Characteristics of High GeO2 Content Silica Fibers" in IEICE TRANSACTIONS on transactions,
vol. E63-E, no. 12, pp. 837-841, December 1980, doi: .
Abstract: Influence of high GeO2 concentration on the optical-loss in high numerical-aperture optical fibers has been investigated. It is shown that a large amount of OH ions are permanently trapped near Ge sites like near Si sites in binary GeO2-SiO2 glasses. The full Ge-OH absorption spectrum, including overtones, is very similar to the Si-OH spectrum but shifts to longer wavelength with increasing GeO2 concentration. Rayleigh scattering increases proportionally to GeO2 concentration and raises the transmission loss of the fibers, especially in shorter wavelength region. The minimum loss is, nevertheless, expected to be less than 1 dB/km even in the fibers containing GeO2 up to several tens of mol% because of a slight reduction of infrared absorption. The transmission loss of 0.8 dB/km at 1.55 µm was achieved by a 27 mol% GeO2-doped core fiber made by the VAD method.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e63-e_12_837/_p
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@ARTICLE{e63-e_12_837,
author={Noriyoshi SHIBATA, Masao KAWACHI, Takao EDAHIRO, },
journal={IEICE TRANSACTIONS on transactions},
title={Optical-Loss Characteristics of High GeO2 Content Silica Fibers},
year={1980},
volume={E63-E},
number={12},
pages={837-841},
abstract={Influence of high GeO2 concentration on the optical-loss in high numerical-aperture optical fibers has been investigated. It is shown that a large amount of OH ions are permanently trapped near Ge sites like near Si sites in binary GeO2-SiO2 glasses. The full Ge-OH absorption spectrum, including overtones, is very similar to the Si-OH spectrum but shifts to longer wavelength with increasing GeO2 concentration. Rayleigh scattering increases proportionally to GeO2 concentration and raises the transmission loss of the fibers, especially in shorter wavelength region. The minimum loss is, nevertheless, expected to be less than 1 dB/km even in the fibers containing GeO2 up to several tens of mol% because of a slight reduction of infrared absorption. The transmission loss of 0.8 dB/km at 1.55 µm was achieved by a 27 mol% GeO2-doped core fiber made by the VAD method.},
keywords={},
doi={},
ISSN={},
month={December},}
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TY - JOUR
TI - Optical-Loss Characteristics of High GeO2 Content Silica Fibers
T2 - IEICE TRANSACTIONS on transactions
SP - 837
EP - 841
AU - Noriyoshi SHIBATA
AU - Masao KAWACHI
AU - Takao EDAHIRO
PY - 1980
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E63-E
IS - 12
JA - IEICE TRANSACTIONS on transactions
Y1 - December 1980
AB - Influence of high GeO2 concentration on the optical-loss in high numerical-aperture optical fibers has been investigated. It is shown that a large amount of OH ions are permanently trapped near Ge sites like near Si sites in binary GeO2-SiO2 glasses. The full Ge-OH absorption spectrum, including overtones, is very similar to the Si-OH spectrum but shifts to longer wavelength with increasing GeO2 concentration. Rayleigh scattering increases proportionally to GeO2 concentration and raises the transmission loss of the fibers, especially in shorter wavelength region. The minimum loss is, nevertheless, expected to be less than 1 dB/km even in the fibers containing GeO2 up to several tens of mol% because of a slight reduction of infrared absorption. The transmission loss of 0.8 dB/km at 1.55 µm was achieved by a 27 mol% GeO2-doped core fiber made by the VAD method.
ER -
English
