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Recent advances in fiber optic magnetic sensing

Considerable progress has been made in the use of fiber optic magnetic sensors in actual field environments, especially for undersea applications. This paper reviews the results of three fiber magnetometer systems: 1) a heading sensor for undersea towed array applications; 2) a remote ac magnetometer designed for land use; and 3) a magnetometer array for undersea magnetic measurements. In each case, relevant design parameters, laboratory test results, and, where applicable, field test results are presented.