Interferometric fiber optic accelerometer

John G. Farah

doi:10.1117/12.169946

9 March 1994 Interferometric fiber optic accelerometer

John G. Farah

Proceedings Volume 2070, Fiber Optic and Laser Sensors XI; (1994) https://doi.org/10.1117/12.169946
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

This paper presents an extrinsic Mach-Zehnder type accelerometer that utilizes a gap between a fiber cantilever and a fixed fiber. The problem of light insertion to the single mode fiber across the gap is eased with the use of quarter pitch GRIN lenses. Phase feedback is done through the laser diode in conjunction with active homodyne demodulation. The accelerometer has a dynamic range of 84 dB and a resolution of 10^-4 g. The configuration uses all-fiber components that are readily transferable to the integrated optic domain.

Citation Download Citation

John G. Farah "Interferometric fiber optic accelerometer", Proc. SPIE 2070, Fiber Optic and Laser Sensors XI, (9 March 1994); https://doi.org/10.1117/12.169946

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