A novel optical processing scheme for interferometric vibration measurement using a low coherence source with a fibre optic probe

K. Weir

doi:10.1117/12.2321919

1 December 1991 A novel optical processing scheme for interferometric vibration measurement using a low coherence source with a fibre optic probe

K. Weir

Author Affiliations +

Proceedings Volume 1584, Fiber Optic and Laser Sensors IX; (1991) https://doi.org/10.1117/12.2321919
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

A low coherence ("white light") interferometric approach to the measurement of vibration using a fibre optic probe to interrogate the vibrating surface is described. The recovery interferometer is a novel adaptation of a Michelson interferometer which provides two independent outputs, the relative phase of which may be controlled. Controlling this phase difference to be π/2 allows the direction of motion of the vibrating surface to be deduced.

Citation Download Citation

K. Weir "A novel optical processing scheme for interferometric vibration measurement using a low coherence source with a fibre optic probe", Proc. SPIE 1584, Fiber Optic and Laser Sensors IX, (1 December 1991); https://doi.org/10.1117/12.2321919

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