A single axis rotation sensor, utilizing a 200 m single mode optical fiber in a 30 cm diameter coil has been constructed and tested in the laboratory. A HeNe laser is the light source for the Sagnac interferometer-mode sensor. The outputs of Si detectors viewing two complementary interference patterns are electronically differenced to obtain a rotation dependent signal. Linear response over a rotation rate range of about 10-4 to 10-1 rad s-1 was obtained.
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Goldstein et al. (1979) studied this question.