Optical-interference type angular velocity or rate sensor having an output of improved linearity

摘要: Clockwise and counterclockwise light beams, which have a Sagnac phase difference caused by an angular rate in optical fiber coil, are combined into interference light, is converted photodetector electrical signal. A sine component cosine of the .increment.Φs output detected first second synchronous detectors, respectively, used as optic gyro it provided to correcting signal generator produce The added adder signal, compared differential amplifier with reference voltage resulting error produced. applied integrating filter, control quantity be emitted from source or gain output, forming feedback loop so that reduced zero.