FIBRE-OPTIC LASER GYROSCOPE Russian patent published in 2008 - IPC G01C19/64 

FIELD: physics; measurements.

SUBSTANCE: present invention relates to devices pertaining to orientation, navigation and control of mobile objects line aeroplanes, ships, intelligent pigging, boring tools, etc. The gyroscope consists of a resonator, made from fibre optic waveguide which has quartz fibre shell with an inner shell made from quartz fibre with germanium oxide additive. In the central part of the inner shell there is an active core, which is a signal-bearing fibre made from quartz glass, activated by rare-earth metal ions. The optical fibre forms a closed loop, wound on an n-angled hard dielectric frame with coefficient of linear thermal expansion close to that of quartz optical fibre. In places where the quartz optical fibre bends, there are opaque micro-mirrors, as well as one semi-transparent micro-mirror with a prism adjacent to it, meant for output of the optical signal. The distance between any two neighbouring micro-mirrors and the total length of the optical fibre are proportional to whole numbers of the wavelength of the signal laser radiation. The pumping system is in form of an optical pumping device, consisting of a laser diode and a microlens, providing for pumping with a bundle of parallel beams, perpendicular to the straight section of the quartz fibre, in the inner shell of which there is V-shaped groove with intersecting edges, which is perpendicular to the centre line of the fibre.

EFFECT: increased scaling coefficient.

5 dwg