Fiber-optic angular rate sensor having enhanced reliability

Details Fiber-optic angular rate sensor having enhanced reliability Fiber-optic angular rate sensor having enhanced reliability

G - Physics

01

C

345/10

G01C 19/04 (2006.01) G01C 19/72 (2006.01)

Patent

CA 1288850

ABSTRACT OF THE DISCLOSURE FIBER-OPTIC ANGULAR RATE SENSOR HAVING ENHANCED RELIABILITY A fiber-optic angular rate sensor having enhanced reliability is disclosed, wherein counter- propagating light beams are directed through a multi turn fiber-optic coil. The light beams are phase shifted relative to each other as the coil rotates to produce a phase difference which is detected to provide a measurement of the rotational rate of the coil. A redundant light source and detector arrangement are included to enhance the reliability of the device and to insure a reciprocal device without sacrificing accuracy.

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