Trimming of fiber optic winding

Details Trimming of fiber optic winding Trimming of fiber optic winding

G - Physics

01

C

G01C 19/72 (2006.01) G02B 6/44 (2006.01)

Patent

CA 2137463

In an optical fiber coil arrangement for use in rota- tion sensors, for example, axial and/or radial errors can be reduced or substantially eliminated by employing trimming lengths of the first and second ends of the optical fiber used to wind the coil. The first and second ends are spatially sep- arated from one another so as to reduce such errors. The trimming lengths may be in the form of trimming turns. To eliminate axial errors, the first end is formed into a first number of trimming turns and the second end is formed in- to a second number of trimming turns so that the first and second number of trimming turns are spatially offset from each other in an axial direction. To eliminate radial errors, the first end is formed into a first number of trimming turns and the second end is formed into a second number of trim- ming turns so that the first and second number of trimming turns are spatially offset from each other in a radial direc- tion. Radial and axial compensation may be combined.

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