| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact and highly-accurate optical gyro. <P>SOLUTION: The optical gyro comprises a laser oscillator 12 and a waveguide 13 for detection which are disposed on one surface of a substrate 11. The laser oscillator 12 comprises: excitation light sources 20 for outputting excitation lights; an optical resonator 22 which has a ring-shaped waveguide; and a laser medium member 21 which has a ring-shaped waveguide formed by using a laser medium having a refractive index higher than that of the optical resonator 22, and generates lights having a wavelength different from that of the excitation lights by the nonlinear optical effect after receiving the excitation lights, and also guides the generated lights to the optical resonator 22. The waveguide 13 for detection is optically coupled to the waveguide of the optical resonator 22. Lights CW and CCW, which are generated by the laser medium member 21, resonate at the waveguides of the laser medium member 21 and the optical resonator 22, and propagate in the waveguides of the optical resonator 22 and the laser medium member 21, which are optically coupled, in opposite directions to each other, are respectively extracted from the waveguide of the optical resonator 22 so that they will be overlapped. <P>COPYRIGHT: (C)2013,JPO&INPIT |
