Abstract
We demonstrate a passive, all-optical fiber frequency reference using a digitally enhanced homodyne interferometric phase readout. We model the noise contributions from fiber thermal noise and the coupling of double Rayleigh scattering in a digitally enhanced homodyne interferometer. A system frequency stability of 0.1 Hz/√Hz is achieved above 100 Hz, which coincides with the double Rayleigh scattering estimate and is approximately a factor of five above the thermo-dynamic noise limit.
Original language | English |
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Pages (from-to) | 26319-26331 |
Number of pages | 13 |
Journal | Optics Express |
Volume | 29 |
Issue number | 17 |
DOIs | |
Publication status | Published - 16 Aug 2021 |