| 摘要 |
A semiconductor ring laser gyroscope includes: a semiconductor laser for emitting two lights from both end surfaces thereof; an optical fiber ring through which the two lights propagate in the respective opposite directions, which, in association with the semiconductor laser, constitutes a laser resonator, and which includes a sensor coil made of an optical fiber wound in a multilayer manner; and an optical detection unit for detecting a rotational angular velocity based on beat frequencies of the two lights, wherein an expression: 2&Dgr;Fbeat—max<Frlg≦̸10&Dgr;Fbeat—min is satisfied in which Frlg=C/nL, where &Dgr;Fbeat—max and &Dgr;Fbeat—min are beat frequencies corresponding respectively to the upper and lower limits of an angular velocity measuring range, Frlg is a ring resonance frequency, C is a light speed, n is a refractive index of the optical fiber, and L is an overall length of the optical fiber. |
