Short-Term Frequency Stability Measurement of BVA Oscillators

Jan Cermak (1) , Alexander Kuna (1) , Ludvík Sojdr (1) , Patrice Salzenstein (2)

1 UFE / CAS - Institute of Photonics and Electronics of the Czech Academy of Sciences
2 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)

This paper discusses the time-domain measurement of short-term frequency stability of ultra-stable BVA oscillators with flicker frequency modulation noise on the order of 10‑14 at averaging intervals from hundreds of milliseconds to tens of seconds. The stability has been measured with a highly sensitive phase-time comparator based on the dual-mixer time-difference multiplication with a background instability of ≈7x10-15/τ in terms of Allan deviation. A discrepancy has been observed in the comparator background noise found with two signals from a single oscillator (comparator test) and with two signals from two oscillators (stability measurements).

Domaines: Instrumentations et Détecteurs [physics.ins-det]

Jan Cermak, Alexander Kuna, Ludvík Sojdr, Patrice Salzenstein. Short-Term Frequency Stability Measurement of BVA Oscillators. IEEE Frequency Control Symposium & European Frequency and Time Forum, Jun 2007, Geneva, Switzerland. pp.1255-1260, ⟨10.1109/FREQ.2007.4319278⟩. ⟨hal-00154292⟩