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 interferometers peak sensitivity is 2×10−14 m/Hz at 70 Hz and 8×10−11 m/Hz at 10 mHz. If deployed on a GS-13 geophone, the resulting inertial sensing output will be dominated by suspension thermal noise from 50 mHz to 2 Hz.
@article{arxiv.1710.05943,
title = {A compact, large-range interferometer for precision measurement and inertial sensing},
author = {S. J. Cooper and A. C. Green and C. Collins and D. Hoyland and C. C. Speake and A. Freise and C. M. Mow-Lowry},
journal= {arXiv preprint arXiv:1710.05943},
year = {2018}
}