Measurement of the chromatic dispersion of an optical fiber by use of a Sagnac interferometer employing asymmetric modulation.


We describe a novel method, based on asymmetric modulation in a Sagnac interferometer, that measures the chromatic dispersion of single-mode fibers. The interferometer incorporates a phase modulator and a test fiber, so the dispersion can be determined from the interference fringe seen when a sweep rf signal is applied to the modulator. This technique… (More)


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