| 摘要 |
A fibre optic interferometer gyroscope including a coil (1) of optical fibre the two ends of which are coupled to an optical Y-junction (4) having electro-optical properties, means (7) for irradiating the coil to produce counter propagating optical signals therein, means for detecting the combined output signals from the Y-junction, means for impressing (9, 10) a first triangular waveform modulation having a predetermined amplitude in opposite senses on the two optical output signals from the coil in the Y-junction means for simultaneously impressing (10, 9) a second square waveform modulation synchronous with the first modulation likewise on the two optical output signals, means for adjusting the amplitude of the second modulation to maintain zero phase movement of the interference pattern and zero distortion of the continuous sinewave amplitude modulation of the combined optical signals resulting from the first triangular waveform modulation, and timing control means for the optical input and output signals and the modulation means. <IMAGE> |
