Technique for diagnosis of fiber-optic digital communication link in local-area network of computers based on measurement of bit-error rates. Variable optical attenuator inserted in optical fiber to vary power of received signal. Bit-error rate depends on ratio of peak signal power to root-mean-square noise in receiver. For optimum measurements, one selects bit-error rate between 10 to negative 8th power and 10 to negative 4th power. Greater rates result in low accuracy in determination of signal-to-noise ratios, while lesser rates require impractically long measurement times.


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    Title :

    Using Bit Errors To Diagnose Fiber-Optic Links


    Contributors:

    Published in:

    Publication date :

    1989-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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