1979-11-08
1982-07-06
Lee, John D.
G02B 726
Patent
active
043379958
ABSTRACT:
Disclosed is an optical switch for changing over the mode connecting two optical transmission lines comprising two optical fibers directly to each other and the mode connecting an optical communication device between the two transmission lines. In this optical switch, in order to reduce the insertion loss, first, second, third and fourth optical fibers, each having an optical connector attached to one end, are attached to a substrate so that at least parts of the respective optical fibers are fixed to the substrate, and the ends of the first and second fibers are arranged on the substrate movably so that the end face of the first optical fiber confronts the end faces of the second and third optical fibers and the end face of the second optical fiber confronts the end faces of the first and fourth optical fibers.
REFERENCES:
patent: 4148558 (1979-04-01), Schuck
patent: 4152043 (1979-05-01), Albanese
patent: 4189206 (1980-02-01), Terai et al.
patent: 4204744 (1980-05-01), Wittmann
Comerford, "Fiber-Optic Bypass Switch", IBM Tech. Discl. Bull., vol. 21, No. 10, Mar. 1979, pp. 4280-4281.
Y. Fujii et al., "Low-Loss 4.times.4 Optical Matrix Switch for Fibre-Optic Comm.", in Electronics Letts., vol. 15, No. 14, Jul. 1979, pp. 427-428.
Aoki Satoshi
Maeda Minoru
Tanaka Toshiki P.
Yamada Shoji
Hitachi , Ltd.
Hitachi Cable Ltd.
Lee John D.
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