AI summaryⓘ
The authors compared how well fiber interferometers detect vibrations when using microwave oscillators versus advanced lasers across distances up to 70 km. They found that lasers work better than microwaves only when measuring vibrations above 10 Hz. At lower frequencies, microwaves have an advantage. This suggests the authors see potential in combining both microwave and optical systems for improved vibration detection.
fiber interferometermicrowave oscillatorlaservibration sensitivityspectral purityfrequencyoptical interferometryhybrid systemssignal detectionlong-distance measurement
Authors
Georgios Aias Karydis, Marco Fasano, Paola Parolari, Pierpaolo Boffi, Charis Mesaritakis, Adonis Bogris
Abstract
We compare the sensitivity of fibre interferometers to vibrations using microwave oscillators and state of the art lasers over distances up to 70 km. High spectral purity lasers outperform only above 10 Hz, highlighting microwave advantages at low frequencies and the potential of hybrid microwave optical interferometry systems