Optical-fiber directional coupler using boron oxide as interstit

Details Optical-fiber directional coupler using boron oxide as interstit Optical-fiber directional coupler using boron oxide as interstit

1984-03-28

1986-05-20

Lee, John

65 314, 350 9633, 350 9634, G02B 626

Patent

active

045897255

ABSTRACT:
An evanescent-field coupler for an optical fiber having a core and a cladding forming a guiding region located sufficiently close to the surface of the fiber along a selected length thereof to allow evanescent-field coupling of an optical signal from the guiding region to an optical fiber or other device outside the guiding region, the cladding consisting essentially of silica, the coupler comprising a vitreous layer of amorphous boron oxide or a boron oxide compound fused to the cladding and having an index of refraction substantially matching the index of refraction of the cladding.

REFERENCES:
patent: 3966446 (1976-06-01), Miller
patent: 4179189 (1979-12-01), Kaminow et al.
patent: 4315666 (1982-02-01), Hicks, Jr.
patent: 4387954 (1983-06-01), Beasley
patent: 4474431 (1984-10-01), Bricheno
patent: 4493528 (1985-01-01), Shaw et al.
Schoner et al., "Novel Method for Making Single-Mode Optical Fibre Directional Couplers", Electronics Lett., vol. 18, No. 13, Jun. 1982, pp. 566-568.

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