Spread spectrum optical time domain reflectometer

Details Spread spectrum optical time domain reflectometer Spread spectrum optical time domain reflectometer

1989-09-28

1991-03-19

Turner, Samuel

Optics: measuring and testing

For optical fiber or waveguide inspection

25022715, 324534, G01N 2188

Patent

active

050005685

ABSTRACT:
An optical time domain reflectometer that injects at least two complementary code sequences into an optical fiber and detects the return signal produced by each of these code sequences. These return signals are processed to extract the function h.sub.k that is equal to the response function for the fiber when a single pulse is injected into the fiber. This processing utilizes a correlation scheme that has no sidelobe distortion. Various combinations of Golay codes are suitable for use as the complementary codes.

REFERENCES:
patent: 4743753 (1988-05-01), Cheng et al.

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