Crystalline optical fiber and its method of manufacture

Details Crystalline optical fiber and its method of manufacture Crystalline optical fiber and its method of manufacture

1989-04-10

1990-12-18

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 33, 65DIG16, 264 15, C03B 37027, C03B 3702

Patent

active

049783769

ABSTRACT:
A crystalline metal halide optical fiber having a two or a three layer structure is provided. The core consists of relatively small crystals. A crust surrounds the core and has the same composition but consists of relatively large crystals. Optionally, an optical outer crust surrounds the inner crust and has a different composition from the inner crust but has generally the same sized crystals. The differing crystal sizes can be produced from a preform by extruding a crystal at a low uniform temperature at a relatively high speed.

REFERENCES:
patent: 4253731 (1981-03-01), Anderson et al.
patent: 4381141 (1983-04-01), Sakuragi et al.
patent: 4451116 (1984-05-01), Pinnow et al.
patent: 4504278 (1985-03-01), Yokota et al.
patent: 4552434 (1945-11-01), Murakami et al.

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