Patent
1985-02-26
1987-06-16
Wise, Robert E.
G02B 626, G02B 642
Patent
active
046732438
ABSTRACT:
This invention provides a branch structure for a rod-type optical transmission line having a quartz rod core, characterized in that two quartz rod branch members bent to a substantially L-shaped form and having a circular cross section are combined together with the axes of longitudinal portions of the members in parallel and with the horizontal portions thereof bifurcated, the combined longitudinal portions being ground to a planar surface each at the opposed faces thereof so as to conjointly form a circular cross section in a predetermined cross sectional area ratio, the combined longitudinal portions being adhered together at the ground planar surfaces, conjointly having the same diameter as the quartz rod core and being coaxially connected to the core at a straight portion of the transmission line. The branch structure of the present invention can divide light for transmission into a branch line at a desired ratio with a reduced transmission loss.
REFERENCES:
patent: 4360248 (1982-11-01), Bickel et al.
patent: 4400055 (1983-08-01), Ozeki et al.
patent: 4431261 (1984-02-01), Kozikowski
patent: 4432599 (1984-02-01), McMahon
patent: 4465335 (1984-08-01), Eppes
patent: 4601541 (1986-07-01), Shaw et al.
Fujii Kanenaga
Hayakawa Junji
Komiyama Toru
Tamaru Sinji
Yamashita Hiroshi
Diakin Kogyo Co., Ltd.
Director-General of Agency of Industrial Science & Technology
Wise Robert E.
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