Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-12-14
1992-03-03
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356 731, 25022715, H01J 516
Patent
active
050935682
ABSTRACT:
A monitoring system continuously monitors fibre optic cables for faults and then enables automatic location of the fault in the cable. In the system an optical monitoring signal is generated and connected as an output signal to a first end of the fiber optic cable for transmission to the second end. The signal is then returned through the fiber optic cable to provide a return signal at the first end of the cable. A comparator at the first end compares the output signal and the return signal and provides corresponding difference data. An optical time domain reflectometer detects the location of a signal loss along the fiber optic cable and a data processing system determines the location of the signal loss from the corresponding difference data. A single optical time domain reflectometer can be used for monitoring a plurality of fiber optic cables.
REFERENCES:
patent: 4685799 (1987-08-01), Brininstool
patent: 4830513 (1989-05-01), Grego
patent: 4875772 (1989-10-01), Gentile
patent: 4898463 (1990-02-01), Sakamoto et al.
Davenport Teresa
Nelms David C.
LandOfFree
Monitoring system for fiber optic cables utilizing an OTDR for d does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Monitoring system for fiber optic cables utilizing an OTDR for d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitoring system for fiber optic cables utilizing an OTDR for d will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-273997