Noise reduction of electrical signals

Details Noise reduction of electrical signals Noise reduction of electrical signals

H - Electricity

04

B

H04B 10/18 (2006.01) G01M 11/00 (2006.01)

Patent

CA 2135588

Methods for determining optical properties of an optical waveguide fiber using an optical time domain reflectometer (OTDR) are provided. The methods involve the removal of noise from an OTDR trace (signal) by fitting the noise component of the signal and then subtracting the fitted noise from the original signal to produce a noise-reduced signal. Optical properties are more readily determined from the noise-reduced signal than from the original signal. In particular, the noise- reduced signal can be used to determine axial optical properties of long fibers, e.g., fibers having a length of 50 kilometers or more.

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