Spliceless optical fiber resonant ring laser gyroscopic system

摘要: A spliceless optical-fiber resonant-ring laser gyroscopic system is disclosed. The includes a cylindrically-shaped monolithic housing fashioned from material having an ultra-low coefficient of thermal expansion. selected length mounted about the perimeter and closed on itself to form ring at least one turn. evanescant-wave directional coupler are provided by bringing fiber proximate ends in parallel contiguity. narrow-band gas-discharge helium-neon optical-frequency tunable formed within operatively connected via integrated-optics chip. chip operative excite clockwise counterclockwise direction sequentially alternately first second pairs frequencies which frequency separation each pair set approximately linewidth resonances, respectively. mean controllably varied until response corresponding excitations individually balanced. Signal processing means responsive balanced responses compute rate angular rotation platform difference balances occur.