G - Physics – 01 – L
Patent
G - Physics
01
L
G01L 5/04 (2006.01) C03B 37/025 (2006.01) G01M 11/00 (2006.01)
Patent
CA 2052460
A non-contact method for monitoring the tension in an optical waveguide fiber during drawing is provided. The motion of the fiber is sensed in a direction transverse to the direction in which the fiber is moving. The sensed motion is analyzed to determine a plurality of frequency components thereof, each frequency component having a magnitude, and one of the components constituting the maximum magnitude component. The frequency of the maximum magnitude component is doubled to obtain a doubled frequency. The presence of a frequency component near the doubled frequency is ascertained to verify that the maximum magnitude component is the principal harmonic frequency of motion of the fiber. The tension in the fiber is then determined Pram the verified principal harmonic frequency component.
Corning Incorporated
Gowling Lafleur Henderson Llp
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