OPTICAL FIBER INTERFERENCE TYPE SENSOR AND OPTICAL FIBER INTERFERENCE TYPE SIGNAL DETECTION METHOD, OPTICAL FIBER INTERFERENCE TYPE VIBRATION SENSOR AND VIBRATION DETECTION METHOD, AND OPTICAL FIBER COMPARISON METHOD

摘要

PROBLEM TO BE SOLVED: To average out and increase sensitivity in an optical fiber loop that serves as the detection section of such physical change as vibration.;SOLUTION: The optical fiber ring interference sensor is formed so that a plurality of optical fibers are overlapped, where the optical fibers compose a loop at least at one section of the loop of the optical fibers that serves as the detection section of vibration or the like.;COPYRIGHT: (C)2002,JPO