Optical fault finder

Details Optical fault finder Optical fault finder

G - Physics

01

M

340/124.5

G01M 11/02 (2006.01) G01M 11/00 (2006.01) H04B 10/08 (2006.01)

Patent

CA 2037965

Abstract of the Disclosure An optical fault finder employing a novel processing technique to achieve greater sensitivity to loss detection and location of faults. The technique includes the use of a matched filter which sequentially operates on a set of datapoints in the trace signal. The resulting matched filter function generates peaks at those locations corresponding to discrete losses in the trace signal. In order to optimize response of the matched filter with respect to reflective faults, a clipping filter is applied to the trace signal, prior to the matched filter, to remove reflective signals. Means are also provided for determining the value of the loss, and for optimizing the pulse width of the test signal launched into the fiber under test.

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