Abstract
We have studied the way to miniaturerize optics, fiber-coil and electronics for a compact fiber-optic-gyroscope (FOG). The optics were miniaturerized by using small bulk optic parts, and hybrid integrated circuits were developed for the electronics of the FOG. To compensate for the reduction of the Sagnac phase shift due to the small diameter of the fiber coil, a small diametered polarization maintaining single-mode fiber (PMSF) was developed. Long lengths of the fiber could be wound around a small sized coiling space. By using these components, a compact FOG with outer diameter of 60 mm and height of 50 mm was developed. Sensitivity of 0.8 deg/hr and drift of 3.6 deg/hr/hr were observed.
