The polarization and magnetooptic properties of a sample of single-mode optical fiber have been investigated. The fiber acts as a linear retarder, and the degree of retardation is dependent on the external pressure applied to the fiber. The stress optic coefficient is found to be 8.72 × 10−10 N−1 m2. The direction of linear polarization is rotated when a longitudinal magnetic field is applied to the fiber (Faraday effect). The Verdet constant is 1.56 × 10−2 min A−1. The intrinsic specific linear retardation of the fiber is found to be less than 0.44 rad m−1 from the magnetooptic measurements. The fiber has been used in an experimental current measurement device.
© 1978 Optical Society of America
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