We have demonstrated a Brillouin fiber-optic gyro that utilizes push-pull phase modulation in the ring cavity to suppress frequency locking. This in-line modulation allows an all-fiber system with optical reciprocity. A tenfold reduction of the width of the lock-in range is observed experimentally.
© 1993 Optical Society of America
S. Huang, K. Toyama, B. Y. Kim, and H. J. Shaw, "Lock-in reduction technique for fiber-optic ring laser gyros," Opt. Lett. 18, 555-557 (1993)