Method of fabricating an elliptical core single mode fiber

Details Method of fabricating an elliptical core single mode fiber Method of fabricating an elliptical core single mode fiber

1978-06-09

1980-01-22

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 3A, 65 13, 350 9631, C03B 3702

Patent

active

041848594

ABSTRACT:
A method of fabricating a low loss single mode optical fiber having an elliptically shaped core comprising subjecting a multi-layered coated substrate having at least a barrier, cladding and core layer to partial collapse, first on one side and then on the other side, to produce an intermediate product having a substantially cross-sectional elliptical shape of at least the core layer. This is followed by collapsing the composite structure into a cylindrical shaped optical fiber preform having an elliptically shaped core portion which is then heated and drawn into a single mode optical fiber having an elliptically shaped core portion.

REFERENCES:
patent: 3243278 (1966-03-01), Olsen et al.
patent: 3293019 (1966-12-01), Nitsche et al.
patent: 3982916 (1976-09-01), Miller
patent: 4046537 (1977-09-01), Deserno et al.

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