Optical fiber gyro

Details Optical fiber gyro Optical fiber gyro

G - Physics

01

C

345/10

G01C 19/64 (2006.01) G01C 19/72 (2006.01)

Patent

CA 1230663

ABSTRACT OF THE DISCLOSURE An optical fiber gyro is improved by providing the various optical elements on a single substrate. Optical wave-guides are formed on the substrate by providing diffusion regions, and light branching means for dividing a laser light beam may take the form of a grating, a directional coupler, etc. The light source is typically a laser device bonded to the substrate and the light receiver a photodiode. These elements may be made mono- lithically with the substrate when the latter is a compound semiconductor such as, e.g. GaAs. If desired one of the wave-guides may be associated with a phase shifter or modulator for detection purposes.

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