Ceramics-Silikáty 35, (4) 363 - 367 (1991) |
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PREPARATION OF PREFORMS AND OPTICAL FIBRES CONTAINING ALUMINIUM BY THE SOLUTION-DOPING METHOD
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Sysala Otmar, Kašík Ivan, Špejtková Ivana
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Institute of Glass Chemistry and Ceramic Materials, Czechoslovak Academy of Sciences, Lipová 5, 120 00 Prague 2, Czechoslovakia
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This paper is concerned with the alternative dopant Al₂O₃ for Modified Chemical Vapour Deposition solution-doping silica based optical fibre. An extension of the solution-doping technique is described by which all processes out of deposition line are removed and organic solution is used. The refractive index profile, spectral attenuation, and cutoff wavelength have been investigated. The fabricated single mode fibres show nearly triangular and step-index profile and spectral attenuation below 10 dB/km in region between 950-1300 nm and at 1550 nm. |
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