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Appl Opt. 1995 Dec 1;34(34):8014-8. doi: 10.1364/AO.34.008014.

Optical fiber accelerometer based on a silicon micromachined cantilever.


An intensity-modulated fiber-optic accelerometer based on backreflection effects has been manufactured and tested. It uses a multimode fiber placed at a spherical mirror center, and the beam intensity is modulated by a micromachined silicon cantilever. This device has applications as an accelerometer and vibrometer for rotating machines. It exhibits an amplitude linearity of ±1.2% in the range of 0.1-22 m s(-2), a frequency linearity of ±1% in the range of 0-100 Hz, and a temperature sensitivity of less than 0.03%/°C. The sensor is devoted to a wavelength-division multiplexing network.

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