OPTICAL ACCELEROMETER SYSTEMS AND METHOD

摘要

An example optical accelerometer system is provided. An optical beam is provided having a predefined center frequency and is frequency-modulated about the predefined center frequency. An optical cavity includes a first mirror at a first end and a second mirror at a second end of the optical cavity. The second mirror is movable along the axial length of the optical cavity in response to an external acceleration, and the optical cavity receives the optical beam and emits a resonated optical beam. An acceleration detection system measures an intensity of the resonated optical beam and calculates a magnitude of the external acceleration along the axial length of the optical cavity based on the intensity of the resonated optical beam resulting from motion of the second mirror. A stabilization system stabilizes the predefined center frequency of the optical beam independently of the external acceleration based on the modulation of the optical beam.

主权项

1. An accelerometer system comprising:
an optical beam source configured to generate an optical beam having a predefined center frequency and which is frequency-modulated about the predefined center frequency; an optical cavity comprising a first mirror at a first end of an axial length of the optical cavity and a second mirror at a second end of the axial length of the optical cavity, the second mirror being movable along the axial length of the optical cavity in response to an external acceleration, the optical cavity being configured to receive the optical beam and to emit a resonated optical beam; an acceleration detection system configured to measure an intensity of the resonated optical beam and to calculate a magnitude of the external acceleration along the axial length of the optical cavity based on the intensity of the resonated optical beam resulting from motion of the second mirror; and a stabilization system configured to stabilize the predefined center frequency of the optical beam independently of the external acceleration based on the frequency modulation of the optical beam.