Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2007-10-09
2007-10-09
Nguyen, Tu T. (Department: 2886)
Optics: measuring and testing
For optical fiber or waveguide inspection
Reexamination Certificate
active
11192356
ABSTRACT:
The invention relates to a method for the reflectometric testing of an optical transmission line from an optical transmission and reception device, in which a test signal is fed into the transmission line from the direction of the optical transmission and reception device and the signal reflected back to the optical transmission and reception device is analysed, in which the transmission device provided for transmitting the useful signal is also used as the transmitter of the test signal by switching it from transmission mode to test mode, and the transmission device itself is used as the receiver of the reflected signal, as well as to an optical device and to an optical transmission and reception device therefore.
REFERENCES:
patent: 4070118 (1978-01-01), Maslowski et al.
patent: 4243320 (1981-01-01), Gordon
patent: 2003/0113118 (2003-06-01), Bartur
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patent: 2 011 751 (1979-07-01), None
patent: WO86/00134 (1986-01-01), None
Patent Abstracts of Japan Bd. 006 Br, 030 (P-103), Feb. 23, 1982 corresponding to JP 56 151336 A (Nippon Telegr &Teleph corp (NTT)), Nov. 24, 1981.
Krimmel Heinz-Georg
Schmuck Harald
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