Fiber-optic rotation sensor

Details Fiber-optic rotation sensor Fiber-optic rotation sensor

1985-10-29

1987-10-06

Sikes, William L.

Optics: measuring and testing

Range or remote distance finding

With photodetection

350 9615, 350 9630, 356350, 356351, 356149, 250227, G02B 602, G01B 902, H01J 516

Patent

active

046978763

ABSTRACT:
A fiber-optic rotation sensor comprises a coil of polarization-holding, single-mode optical fiber (25) having a core (26) with a non-circular cross-section defining two transverse orthogonal axes, the outer surface (28) of said fiber having a non-circular cross-section with a predetermined geometric relationship to said orthogonal transverse axes, a laser source (30) coupled to one end of said fiber (25) for supplying said fiber (25) with an optical signal having a fixed polarization plane, said non-circular outer surface of said fiber (25) forming a reference surface (29) for precisely aligning one of said transverse orthogonal axes of said fiber core (26) with said fixed polarization plane of the optical signal from said laser source (30).

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