Progress In Fiber Gyro Development For Attitude And Heading Reference Systems

Since 83 LITEF is investigating different concepts of fiber optic gyroscopes theoretically anu experimentally. It started with the passive resonator gyro which promises a good scale factor linearity and repeatability. For building labmodels it was necessary to develop single-mode fiber optic components, especially low-loss couplers. For comparison Sagnac interferometer gyros were built, which generally showed better bias stability than the resonator gyros.