Optical waveguides – With optical coupler – Particular coupling structure
Patent
1990-09-19
1992-03-31
Lee, John D.
Optical waveguides
With optical coupler
Particular coupling structure
359900, 385 51, G02B 626
Patent
active
051014629
ABSTRACT:
Two single mode optical fibers are reduced in diameter over a predetermined length to form reduced-diameter portions whose center portions have different diameters. The two optical fibers are intersected at a small angle to each other substantially centrally of their reduced-diameter portions and then are fused together at the intersecting portions and the fused portions of the two optical fibers are heated and stretched to provide an optical coupler having a desired coupling ratio.
REFERENCES:
patent: 4291940 (1981-09-01), Kawasaki et al.
patent: 4586784 (1986-05-01), Tremblay et al.
patent: 4869570 (1989-09-01), Yokohama et al.
patent: 4997247 (1991-03-01), Stowe
patent: 5004316 (1991-04-01), Hill et al.
patent: 5015058 (1991-05-01), Thorncraft et al.
"Plastic Optical Fiber Star Coupler" by Imoto et al., Applied Optics, vol. 25, No. 19, Oct. 1986, pp. 3443-3447.
Hanafusa Hiroaki
Noda Juichi
Sasaki Hiroyuki
Shimamura Masato
Takeuchi Yoshiaki
Japan Aviation Electronics Industry Limited
Lee John D.
Nippon Telegraph and Telephone Corporation
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