Impurity Influence in Raw Materials on Transmission Loss for the VAD Fibers

Hiroyuki SUDA; Kazunori CHIDA; Motohiro NAKAHARA

Impurity Influence in Raw Materials on Transmission Loss for the VAD Fibers

Hiroyuki SUDA, Kazunori CHIDA, Motohiro NAKAHARA

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In order to propose necessary raw material purity for obtaining low loss optical vapor-phase axial deposition (VAD) fibers, the contribution of impurities in raw materials to transmission loss for finished fibers has been investigated. Especially, the relation between both SiHCl₃ and Fe impurity concentrations in raw materials and the absorption loss for final VAD fibers is clarified. As a result, the OH absorption loss, which is to be produced by SiHCl₃ impurity, for VAD fibers is independent of the SiHCl₃ impurity amount in raw materials, in contrast to MCVD fibers. In regard to Fe impurity, broadly Fe absorption loss of 0.3 dB/km at 0.8 µm appeared in the VAD fiber which was made from the raw materials containing saturated FeCl₃ impurity. This Fe impurity contribution is discussed in terms of partial vapor pressure. Besides, low loss fiber with a 0.60 dB/km minimum transmission loss at 1.55 µm has been fabricated from unpurified SiCl₄ with 99.17% purity. It is showed that low grade raw materials can be used to fabricate low loss fibers for practical use in the VAD process.

Publication: IEICE TRANSACTIONS on transactions Vol.E66-E No.10 pp.591-595

Publication Date: 1983/10/25

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Type of Manuscript: PAPER

Category: Optical and Quantum Electronics

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Hiroyuki SUDA
Kazunori CHIDA
Motohiro NAKAHARA

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Hiroyuki SUDA, Kazunori CHIDA, Motohiro NAKAHARA, "Impurity Influence in Raw Materials on Transmission Loss for the VAD Fibers" in IEICE TRANSACTIONS on transactions, vol. E66-E, no. 10, pp. 591-595, October 1983, doi: .
Abstract: In order to propose necessary raw material purity for obtaining low loss optical vapor-phase axial deposition (VAD) fibers, the contribution of impurities in raw materials to transmission loss for finished fibers has been investigated. Especially, the relation between both SiHCl₃ and Fe impurity concentrations in raw materials and the absorption loss for final VAD fibers is clarified. As a result, the OH absorption loss, which is to be produced by SiHCl₃ impurity, for VAD fibers is independent of the SiHCl₃ impurity amount in raw materials, in contrast to MCVD fibers. In regard to Fe impurity, broadly Fe absorption loss of 0.3 dB/km at 0.8 µm appeared in the VAD fiber which was made from the raw materials containing saturated FeCl₃ impurity. This Fe impurity contribution is discussed in terms of partial vapor pressure. Besides, low loss fiber with a 0.60 dB/km minimum transmission loss at 1.55 µm has been fabricated from unpurified SiCl₄ with 99.17% purity. It is showed that low grade raw materials can be used to fabricate low loss fibers for practical use in the VAD process.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e66-e_10_591/_p

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@ARTICLE{e66-e_10_591,
author={Hiroyuki SUDA, Kazunori CHIDA, Motohiro NAKAHARA, },
journal={IEICE TRANSACTIONS on transactions},
title={Impurity Influence in Raw Materials on Transmission Loss for the VAD Fibers},
year={1983},
volume={E66-E},
number={10},
pages={591-595},
abstract={In order to propose necessary raw material purity for obtaining low loss optical vapor-phase axial deposition (VAD) fibers, the contribution of impurities in raw materials to transmission loss for finished fibers has been investigated. Especially, the relation between both SiHCl₃ and Fe impurity concentrations in raw materials and the absorption loss for final VAD fibers is clarified. As a result, the OH absorption loss, which is to be produced by SiHCl₃ impurity, for VAD fibers is independent of the SiHCl₃ impurity amount in raw materials, in contrast to MCVD fibers. In regard to Fe impurity, broadly Fe absorption loss of 0.3 dB/km at 0.8 µm appeared in the VAD fiber which was made from the raw materials containing saturated FeCl₃ impurity. This Fe impurity contribution is discussed in terms of partial vapor pressure. Besides, low loss fiber with a 0.60 dB/km minimum transmission loss at 1.55 µm has been fabricated from unpurified SiCl₄ with 99.17% purity. It is showed that low grade raw materials can be used to fabricate low loss fibers for practical use in the VAD process.},
keywords={},
doi={},
ISSN={},
month={October},}

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TY - JOUR
TI - Impurity Influence in Raw Materials on Transmission Loss for the VAD Fibers
T2 - IEICE TRANSACTIONS on transactions
SP - 591
EP - 595
AU - Hiroyuki SUDA
AU - Kazunori CHIDA
AU - Motohiro NAKAHARA
PY - 1983
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E66-E
IS - 10
JA - IEICE TRANSACTIONS on transactions
Y1 - October 1983
AB - In order to propose necessary raw material purity for obtaining low loss optical vapor-phase axial deposition (VAD) fibers, the contribution of impurities in raw materials to transmission loss for finished fibers has been investigated. Especially, the relation between both SiHCl₃ and Fe impurity concentrations in raw materials and the absorption loss for final VAD fibers is clarified. As a result, the OH absorption loss, which is to be produced by SiHCl₃ impurity, for VAD fibers is independent of the SiHCl₃ impurity amount in raw materials, in contrast to MCVD fibers. In regard to Fe impurity, broadly Fe absorption loss of 0.3 dB/km at 0.8 µm appeared in the VAD fiber which was made from the raw materials containing saturated FeCl₃ impurity. This Fe impurity contribution is discussed in terms of partial vapor pressure. Besides, low loss fiber with a 0.60 dB/km minimum transmission loss at 1.55 µm has been fabricated from unpurified SiCl₄ with 99.17% purity. It is showed that low grade raw materials can be used to fabricate low loss fibers for practical use in the VAD process.
ER -