Homodyne digital interferometry for a sensitive fiber frequency reference | Zendy

Silvie Ngo | Zendy; T. McRae | Zendy; Malcolm B. Gray | Zendy; D. A. Shaddock | Zendy

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Homodyne digital interferometry for a sensitive fiber frequency reference

Author(s) -

Silvie Ngo,

T. McRae,

Malcolm B. Gray,

D. A. Shaddock

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.018168

Subject(s) - interferometry , optics , direct conversion receiver , homodyne detection , physics , michelson interferometer , astronomical interferometer , sensitivity (control systems) , frequency domain , allan variance , optical fiber , computer science , standard deviation , electronic engineering , engineering , mathematics , statistics , computer vision

Digitally enhanced homodyne interferometry enables robust interferometric sensitivity to be achieved in an optically simple configuration by shifting optical complexity into the digital signal processing regime. We use digitally enhanced homodyne interferometry in a simple, all-fiber Michelson interferometer to achieve a frequency reference stability of better than 20 Hz/√Hz from 10 mHz to 1 Hz, satisfying, for the first time in an all fiber system, the stability requirements for the Gravity Recovery and Climate Experiment Follow On mission. In addition, we have demonstrated stability that satisfies the future mission objectives at frequencies down to 1 mHz. This frequency domain stability translates into a fractional Allan deviation of 3.3 × 10(-17) for an integration time of 55 seconds.

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