Glass fibers with transverse openings and methods of their produ

Details Glass fibers with transverse openings and methods of their produ Glass fibers with transverse openings and methods of their produ

1981-04-08

1984-04-24

Fisher, Richard V.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

65 2, 65 311, 428399, G02B 514, C03B 37075

Patent

active

044444630

ABSTRACT:
A glass fiber for use as a light waveguide characterized by a one piece member having at least one transverse opening extending through the fiber to subdivide a section of the fiber into two portions connected at each end by the zones of the fiber free of the opening. By cutting in the area of the opening, a branch fiber can be produced. Preferably, the fiber includes a pair of cores which are separated by the openings. The method includes drawing the fiber from a mass of softened glass and while in the softened state, forming the openings therein or by drawing the fiber from a preform having at least one transverse extending opening. Preferably the preform is formed by joining two members having flat surfaces together and the openings in the preform are formed by forming transverse grooves in one of the flat surfaces.

REFERENCES:
patent: 2122972 (1938-07-01), Arbib
patent: 3496931 (1970-02-01), Pilling
patent: 3887264 (1975-06-01), Kompfner
patent: 3902089 (1975-08-01), Beasley et al.
patent: 4054366 (1977-10-01), Barnoski et al.
patent: 4083625 (1978-04-01), Hudson
patent: 4111521 (1978-09-01), Streifer
patent: 4315666 (1982-02-01), Hicks, Jr.
S. K. Sheem et al., "Single-Mode Fiber-Optical Power Divider: Encapsulated Etching Technique," Optics Letters, vol. 4, No. 1, Jan. 1979, pp. 29-31.
S. K. Sheem et al., "Acoustic Sensitivity of Single-Mode Optical Power Dividers," Optics Letters, vol. 4, No. 10, Oct. 1979, pp. 322-324.

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