Optical waveguides – With optical coupler – Plural
Patent
1990-06-07
1991-09-24
Lee, John D.
Optical waveguides
With optical coupler
Plural
385 15, 359115, G02B 628
Patent
active
050509500
ABSTRACT:
An optical multiplexer of the variable coupling type for branching an input signal from a first optical fiber to a second fiber at a given ratio. The optical multiplexer is made of a pair of substrates, each having a side defining a reference plane and a face perpendicular to the reference plane. The respective perpendicular faces each have a V-groove disposed at an angle greater than zero and less than 5.degree. to the reference plane. The first and second optical fibers are positioned in the respective V-grooves. Each of the faces of the substrates with the optical fibers in the V-grooves are abraded until the cores of the optical fibers are just exposed. The substrates are assembled to contact each other at the respective faces such that the exposed cores of the optical fibers face each other and are separated by a distance defining the ratio of branching of the input signal.
REFERENCES:
patent: 4461536 (1984-07-01), Shaw et al.
patent: 4493528 (1985-01-01), Shaw et al.
patent: 4556279 (1985-12-01), Shaw et al.
Yamamoto et al., "A Large-Tolerant Single-Mode Optical Fiber Coupler . . . ", Proc. of IEEE, Jun. 1976, pp. 1013-1014.
Kobayashi et al., "Optical Demultiplexer Using Coupling . . . ", Applied Optics, vol. 17, No. 20, Oct. 1978, pp. 3253-3258.
Lee John D.
Seikoh Giken Co. Ltd.
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