Method and apparatus for manufacturing preform for fluoride glas

Details Method and apparatus for manufacturing preform for fluoride glas Method and apparatus for manufacturing preform for fluoride glas

1989-01-23

1990-05-15

Kellogg, Arthur

Glass manufacturing

Processes

Fusion bonding of glass to a formed part

65 23, 65 39, 65152, 65153, C03B 1900, C03C 2700

Patent

active

049254758

ABSTRACT:
A method and an apparatus for manufacturing a fluoride glass fiber preform are disclosed which preclude the step of pouring a glass melt into a mold from a crucible, and hence permit the fabrication of a long, homogeneous fluoride glass fiber preform free from foreign substances and air bubbles leading to scattering and which also allow ease in the fabrication of a preform having an elliptic core portion for drawing a polarized wave retaining fiber.

REFERENCES:
patent: 586188 (1897-07-01), Houghton
patent: 3221915 (1965-12-01), Gort et al.
patent: 3533905 (1970-10-01), O'Meara, Jr.
patent: 3556756 (1971-01-01), Andrysick
patent: 4305744 (1981-12-01), Carette et al.
patent: 4323381 (1982-04-01), Matsuyama et al.
patent: 4740225 (1988-04-01), Cocito et al.
patent: 4750926 (1988-06-01), Berkey

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