1978-10-10
1981-08-25
Levy, Stewart J.
350 9615, G02B 514
Patent
active
042855705
ABSTRACT:
A light branching device includes a light-focusing transmission body having a refractive index which decreases in proportion to the square of the distance from the plane of its optical axis, and two end faces perpendicular to the optical axis and a substantial light path length equal to an integral multiple of approximately one-half of the pitch at which the light propagates. The ends of a plurality of optical fibers are disposed adjacent to the end faces so that light emanating from one of the optical fibers is dispersed primarily in a plane parallel with the optical axis plane and impinges upon the end of at least one of the other optical fibers for transmission therethrough.
REFERENCES:
patent: 3829195 (1974-08-01), Rawson
patent: 3937557 (1976-02-01), Milton
patent: 4111524 (1978-09-01), Tomlinson
A. Ishikawa et al. "Beam Splitting and Coupling Circuits Using a Selfoc Lens" 1977, Mar. Japan Electronic Communication Engineering.
J. D. Crow et al. "GaAs Laser Array Source Package" Optics Letters vol. 1, No. 1, Jul. 1977, pp. 40-42.
S. Sugimot et al. "Light Coupling from a DH Laser Into a Selfoc.RTM. Fiber ...." Topical Meeting on Optical Fiber Transmission Jan. 1975, Williamsburg Va.
T. Uchida et al. "Optical Characteristics of A Light Focusing Fiber..." IEEE Journ. of Quantum Elec. QE-6, No. 10, pp. 606-612, Oct. 1970.
D. E. Altman "Fiber Optics Applications In the Shipboard Data Multiplex System" Naval Sea Systems Command Navsea 034 Jun. 1976.
Minemura Kouichi
Uchida Teiji
Levy Stewart J.
Nippon Electric Company Ltd.
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