Optical waveguides – With splice – Including splice joint reinforcement
Patent
1995-06-06
1996-09-17
Ngo, John
Optical waveguides
With splice
Including splice joint reinforcement
385147, 21912164, G02B 638
Patent
active
055576974
ABSTRACT:
A test piece 1 is prepared having the same metal tube 2 and metal sleeve 4 as in the case of metal tube covered optical fiber cables 10 and 20 to be connected and a sensor 5 for measuring temperatures in the vicinity of a welding part, prior to connection of the cables an optimum welding condition is set by variously changing welding conditions using the test piece 1 and measuring temperatures in the vicinity of the welding part with the sensor 5, the connection is made under such an optimum welding condition, and after this connection welding is done under one and the same condition as in the case of the connection using the other test piece 1, and then by the output of the sensor 5 it is to be made sure that the connection has been carried out almost under the same condition as the optimum welding condition.
REFERENCES:
patent: 4810277 (1989-03-01), Waitl et al.
patent: 5000537 (1991-03-01), Saito et al.
patent: 5076657 (1991-12-01), Toya et al.
patent: 5142763 (1992-09-01), Toya et al.
patent: 5430818 (1995-07-01), Hartl et al.
Patent Abstracts Of Japan, vol. 16, No. 305 (P-1380), Jul. 6, 1992 & JP-A-04 083206 (Fujikura Ltd. et al), Mar. 17, 1992.
Patent Abstracts Of Japan, vol. 15, No. 372 (P-1254) Sep. 19, 1991 & JP-A-03 146911 (Nippon Steel Weld Prod. & Eng. Co., Ltd., Jun. 21, 1991.
Ngo John
NKK Corporation
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