A compact, large-range interferometer for precision measurement and inertial sensing. (22nd March 2018) - Cooper, S J
Abstract: We present a compact, fibre-coupled interferometer with high sensitivity and a large working range. We propose to use this interferometer as a readout mechanism for future inertial sensors, removing a major limiting noise source, and in precision positioning systems. The interferometer's peak sensitivity is 2 × 10 − 14 m H z − 1 at 70 Hz and 7 × 10 − 11 m H z − 1 at 10 mHz. If deployed on a GS-13 geophone, the resulting inertial sensing output will be limited by the suspension thermal noise of the reference mass from 10 mHz to 2 Hz.