Abstract

We report significant performance improvement of a mode-locked fiber laser gyroscope. A Fabry–Perot cavity GaAlAs laser diode whose front facet was antireflection coated was used as a gain medium. The rms noise equivalent rotation rate measured with a time-interval counter was improved to 0.06 deg/h. The long-term drift of the gyroscope signal was reduced to 100 deg/h after a polarizer was inserted into the laser cavity formed with a polarization-maintaining fiber.

© 1997 Optical Society of America

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