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Theory of a novel high sensitivity optical fibre gyroscope

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2 Author(s)
Yu, A. ; Dept. of Electron. Syst. Eng., Essex Univ., Colchester Univ., UK ; Siddiqui, A.S.

A novel optical fibre gyroscope, with a structure making use of the combination of a Sagnac interferometer with an active fibre ring-resonator, is proposed and analysed. It can be regarded as a generalised structure of the conventional Sagnac interferometric fibre optic gyroscope (SIFOG). Counter-propagating optical waves in the gyroscope can circulate many times in the sensing loop into which an optical amplifier is incorporated to compensate partially for optical losses of each circulation. The optical response is effectively the sum of the optical responses of a series of conventional Sagnac interferometric fibre optic gyroscopes having effective loop length equal to the fibre loop length multiplied by the number of circulations

Published in:

Optoelectronics, IEE Proceedings J  (Volume:140 ,  Issue: 2 )