Testing optical fiber links
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United States of America Patent
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Dec 31, 1991
Grant Date -
N/A
app pub date -
Feb 28, 1990
filing date -
Mar 28, 1989
priority date (Note) -
Expired
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Abstract
An apparatus for testing optical fibre links in a data communication network includes communication equipment (13) for generating and receiving traffic over one or more fibre links X at a wavelength .lambda.2, optical test instrumentation (10) for generating test signals at a wavelength .lambda.1, different from .lambda.2, and circuitry (11) for superimposing a test signal from the test means onto a traffic signal from the communication equipment (13).
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