Abstract

In some optical logic concepts waveguides provide required optical signal delays between stages. Transit times or group delays must, therefore, be specified and measured. A relatively simple interferometric technique is reported for determining the transit time through single-mode optical fibers up to 4 m In length or ~20 nsec in delay. Precision is estimated at a few parts in 105. This approach is generally related to prior work on fiber dispersion characterization by interferometry.1,2

© 1984 Optical Society of America

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References

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