Method of making optical devices

Details Method of making optical devices Method of making optical devices

1989-06-15

1991-07-16

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29508, 29516, 295272, B23P 2500

Patent

active

050313002

ABSTRACT:
A fiber optic coupler is formed by providing a glass tube having a longitudinal aperture extending therethrough. Glass optical fibers, each having a core, cladding and coating are disposed within the longitudinal aperture, the fibers extending beyond each end thereof. The coating is removed from that portion of the fibers in the midregion of the tube. The midregion of the tube is heated, collapsed about the fibers, and drawn to reduce the diameter thereof over a predetermined length. The fibers that are used in the process of making the coupler are initially provided with a coating that is too thin to provide good handleability and strength. However, the thin initial coating enables the use of a tube having a small aperture and thereby enhances the tube collapse step. After the coupler is formed, the fibers extending therefrom are overcoated. The process can be used to make other kinds of optical devices including integrated optical components.

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patent: 4591372 (1986-05-01), Bricheno et al.
patent: 4726643 (1988-02-01), Imoto et al.

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