Abstract

A simple open-loop approach to a standard fiber-optic gyroscope that uses an intensity-modulated source is described. Direct readout of the Sagnac effect in an open-loop form is obtained by applying a sinusoidal modulation to the source and the phase modulator at the proper frequency, with the modulation depth of the source adjusted appropriately. Experimental results show good linearity over a wide dynamic range.

© 1988 Optical Society of America

Triangular phase-modulation approach to an open-loop fiber-optic gyroscope

Pie-Yau Chien, Ci-Ling Pan, and Lih-Wuu Chang
Opt. Lett. 16(21) 1701-1703 (1991)

Secondary-phase-modulation method for open-loop fiber-optic gyroscopes

M. Komachiya, H. Sonobe, S. Oho, K. Ohbu, T. Yuhara, and H. Iizuka
Appl. Opt. 35(19) 3719-3725 (1996)

Effects of the second harmonic and the duty cycle on the scale factor of a fiber-optic gyroscope with gated two-harmonic phase modulation

Moonsu Oh, Yongduk Kim, and Manho Chung
Opt. Lett. 13(5) 410-412 (1988)

Closed-loop fiber-optic gyroscope with a sawtooth phase-modulated feedback

A. Ebberg and G. Schiffner
Opt. Lett. 10(6) 300-302 (1985)

Gated phase-modulation approach to fiber-optic gyroscope with linearized scale factor

B. Y. Kim and H. J. Shaw
Opt. Lett. 9(8) 375-377 (1984)