Method for fabricating an optical waveguide

Details Method for fabricating an optical waveguide Method for fabricating an optical waveguide

1994-06-23

1996-09-17

Czaja, Donald E.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 31, 65 602, 65 605, 65386, 65391, 65399, 65427, 65429, 427446, 427162, 427224, 4274196, 427375, 385129, C03C 1700, G02B 610

Patent

active

055564429

ABSTRACT:
A process for forming film structure using Flame Hydrolysis Deposition (FHD) in which (1) glass soot is deposited on a substrate via FHD to form a first porous vitreous layer having a first bulk density, (2) a second porous vitreous layer having a second bulk density that is larger than the first bulk density is formed from a portion of the first porous vitreous layer, and (3) a third porous vitreous layer having a third bulk density is formed by depositing glass soot containing a refractive index increasing dopant on the second porous vitreous layer by FHD. The first, second and third porous vitreous layers are then heated to form an undercladding layer and a core layer, the undercladding layer being formed from the first and second porous vitreous layers and the core layer being formed from the third porous vitreous layer.

REFERENCES:
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patent: 4363647 (1982-12-01), Bachman et al.
patent: 4425146 (1984-01-01), Izawa et al.
patent: 5215564 (1993-06-01), Weber
patent: 5385594 (1995-01-01), Kanamori et al.
Miyashita, "Fiber Optic Component Technology in PIRI", NTT Review, vol. 1, No. 3, Sep. 1989.

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