Dual-input fiber-optic gyroscope.
A fiber-optic gyroscope is operated at maximum sensitivity by supplying two equal-intensity inputs with a specific phase difference to the gyroscope beam splitter. When the beam-splitter outputs have equal intensity, reciprocity requires the Sagnac interferometer to be at quadrature. A sensitivity of approximately 0.93 rad(-1) is demonstrated with a minimum-detectable rotation rate of 0.4 deg/sec.
Rashleigh
S C
SC
US Naval Research Laboratory, Washington, DC 20375, USA.
Burns
W K
WK