Low noise optical time domain reflectometer

Details Low noise optical time domain reflectometer Low noise optical time domain reflectometer

1987-07-29

1988-03-22

Willis, Davis L.

Optics: measuring and testing

Range or remote distance finding

With photodetection

G01N 2188, G01M 1100

Patent

active

047324694

ABSTRACT:
A time domain reflectometer includes a combined a pulse generator for generating a pulse which is fed to an object under test such as a optical fiber and a sampler for sampling a reflection signal such as a back scattering signal. The pulse generator is controlled by analog delay means and the sampler is controlled by digital delay means. It, therefore, is possible to sample the small back scattering signal and to measure a very long fiber without influences of undesirable signals.

REFERENCES:
patent: 4438404 (1984-03-01), Philipp

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