Glass body for optical fiber method of selecting the same optica

Details Glass body for optical fiber method of selecting the same optica Glass body for optical fiber method of selecting the same optica

1996-10-28

1998-06-09

McCamish, Marion E.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428375, 428391, 385124, 385142, 264 124, 264 129, 264 16, 65397, 65398, 65401, 65424, 65435, B32B 900, G02B 602, B29D 1100

Patent

active

057630810

ABSTRACT:
A glass body for optical fiber containing GeO.sub.2 --SiO.sub.2 glass in a core portion thereof, in which the GeO.sub.2 --SiO.sub.2 glass has an absorbance at 5.16 eV of at least 1/mm but not higher than 2.5/mm or in which concentration of Ge.sup.2+ contained in the GeO.sub.2 --SiO.sub.2 glass substantially lies within the range of 1.1.times.10.sup.-9 to 2.8.times.10.sup.-9 mol/mm.sup.3 as calculated by the following general equation:

REFERENCES:
patent: 5059229 (1991-10-01), Blankenship et al.
Hosono et al, "Preferred Concentration Enhancement of Photobleachable Defects Responsible for 5eV Optical Absorption Band in SiO.sub.2 :GeO.sub.2 Glass Preform by Heating in a H.sub.2 Atmosphere", Appl Phys. Lett., vol. 63, No. 4, Jul. 26, 1993, pp. 479-481.
Hosono et al, Nature and Origin of the 5-eV Band in SiO.sub.2 :GeO.sub.2 Glasses, Physical Review B, vol. 46, No. 18, Nov. 1992, pp. 445-451.
Gur'yanov et al, "Radial Distribution of Impurity Defects in Blanks for Fiber Light Guides Based on Vitreous Silica Plus Geranium Dioxide", Fizika I Khimiya Stekla, May-Jun. 1986, USSR, vol. 12, No. 3, Jun. 1986, pp. 200-204.
Tsai et al, "Structural Origin of the 5.16 eV Optical Absorption Band in Silica and Ge-Doped Silica", Appl Phys. Lett., vol. 64, No. 12, Mar. 21, 1994, pp. 1481-1483.
Susa et al, "Sol-gel Derived Ge-Doped Silica Glass for Optical Fiber Application II. Excess Optical Loss", Journal of Non-Crystalline Solids, vol. 128, No. 2, Apr. 1, 1991, pp. 118-125.
Physical Review B, vol. 46. No. 18, Nov. 1, 1992-II, Nature and origin of the 5-eV band in SiO2:O2 glasses, H. Hosono et al pp. 11 445-11 451.

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