SEMICONDUCTOR LASER GYROSCOPE (VERSIONS) Russian patent published in 2012 - IPC G01C19/64 

FIELD: physics.

SUBSTANCE: according to the first version, the gyroscope has an ring laser consisting of a semiconductor optical amplifier and a ring resonator made from a light guide wound into a multiturn coil, an electronic system, two photodetectors and a fibre-optic splitter having four optical ports. The first port is connected to one of the two optical ports of the semiconductor optical amplifier and the second is connected to the light guide. The first and second ports are part of the ring resonator and the third and fourth ports are connected to the photodetectors. The electoronic system is enables to excite the semiconductor optical amplifier with current at intermode frequency v=c/Ln, where c is the speed of light in a vacuum, L is the length of the light guide and n is the refraction index of the light guide in a vacuum. In the second version, the gyroscope has two fibre-optic splitters with a 2x2 configuration, and the light guide of the resonator is divided into two parts.

EFFECT: simple design both in terms of the optical circuit and the signal processing system; low cost of the gyroscope.

6 cl, 5 dwg