Fiber-optic rotation sensor

Details Fiber-optic rotation sensor Fiber-optic rotation sensor

G - Physics

08

C

340/136.1

G08C 21/00 (2006.01) C03B 37/027 (2006.01) G01C 19/72 (2006.01) G02B 6/255 (2006.01) G02B 6/28 (2006.01) G02B 6/42 (2006.01)

Patent

CA 1240015

ABSTRACT OF THE DISCLOSURE The present invention provides a fiber-optic rotation sensor comprising a coil of polarization-holding, single-mode optical fiber having a core with a non-circular cross-section defining two transverse orthogonal axes, the outer surface of said fiber having a non-circular cross-section with a predeter- mined geometric relationship to said orthogonal transverse axes, a laser source coupled to one end of said fiber for supply- ing said fiber with an optical signal having a fixed polarization plane, said non-circular outer surface of said fiber forming a reference surface for precisely aligning one of said transverse orthogonal axes of said-fiber core with said fixed polarization plane of the optical signal from said laser source.

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