Multimode Fibre Optic Gyroscope, Recent Progress and Limits

The widespread application ot a sensor depends mainly on its pertormance, on cheap standard components and low assembly costs. In contrast to single mode fibre optic gyroscopes (SFOG) [1 ]-[16] the presented multimode fibre optic gyroscope (MFOG) meets both a sufficient preciseness of measurement and already low manufacturing costs, if produced in small series. Thus the MFOG is a potential candidate for large scale applications and it represents a great economical interest. The MFOG does not reach an new dimension of preciseness, but it could conquer the market of mass produced sensors. After a concise discussion of the gyros optical design, the present state of art and some results of our research are presented. Furthermore, we explain the impact of fibre parameters on sensitivity and the emphasis in future research.