Fused fiber optic coupler

Details Fused fiber optic coupler Fused fiber optic coupler

1990-01-03

1992-01-07

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling structure

385 51, 385 52, G02B 626

Patent

active

050784650

ABSTRACT:
A fiber is mounted with a bare portion extending between two blocks. Four blocks securing a pair of fibers in this manner are mutually aligned by one or more external sleeves, and the fibers are fused and drawn to form a coupler of defined coupling ratio. One sleeve then slides over all four blocks and is bonded to constitute a rigid housing surrounding the fusion region. A preferred coupling block is a grooved D-rod, and different geometries are shown to provide effective PZ and PM fusion couplings, with fiber stress axes aligned with respect to a flat surface of the rod. Portions of the rod provide fiber support and alignment during fusion, and break away from the assembled coupler when complete.

REFERENCES:
patent: Re33296 (1990-08-01), Stowe et al.
patent: 4593968 (1986-06-01), Giallorenzi
patent: 4634858 (1987-01-01), Gerdt et al.
patent: 4669820 (1987-06-01), Ten Berge
patent: 4688882 (1987-08-01), Failes
patent: 4697876 (1987-10-01), Dyott
patent: 4705352 (1987-11-01), Margolin et al.
"Protection of Optical Fiber Arc Fusion Splices"-S. Stueflotten,-Journal of Optical Communications, 3(1982) 1, pp. 19-25.
Fiber-Optic Coupler Sensors: "Biomedical Applications", in Sensors, Sep. 1988, pp. 20.23.

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