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We demonstrate an single branch Er:fiber laser for simultaneous access to all optical standards at NIST and that enables optical measurement instabilities at an unprecedented level of less than 4 × 10−18 at 1 s averaging time, and averaging down as τ−1/2.
We demonstrate a 10-GHz fiber-based photonic microwave generator with residual phase noise below −110 dBc/Hz for Fourier frequencies higher than 2-Hz. The noise floor is reduced to −156 dBc/Hz by using an optical mode-filtering cavity.
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