Method of fabrication of single mode optical fibers or waveguide

Details Method of fabrication of single mode optical fibers or waveguide Method of fabrication of single mode optical fibers or waveguide

1979-10-22

1981-08-11

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 2, 65 13, 427163, C03C 2502

Patent

active

042832136

ABSTRACT:
A method for fabricating a fiber with optical cores of diameters between 2 to 20 microns is depicted. A first step includes the fabrication of a step-index preform of predetermined dimensions. The preform is drawn into a conventional fiber by conventional techniques resulting in a fiber having an outer diameter of about 120 microns or larger. The fiber is then emplaced in a glass tube. The tube is collapsed on the fiber by heating the same resulting in a second preform. This preform is again drawn into a fiber by conventional techniques to obtain a final fiber having core dimensions indicative of single mode operation with compatible outer diameters.

REFERENCES:
patent: 3877912 (1975-04-01), Sliraishi et al.
patent: 4123483 (1978-10-01), Nakahara et al.
patent: 4155733 (1979-05-01), Sandbank et al.

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