Extended Data Fig. 4: ISCL Fiber Link Noise.
From: Optical atomic clock interrogation using an integrated spiral cavity laser
a, Phase noise of ISCL measured at the output of the ISCL at 1348 nm and across the fiber link to the Sr-ion laboratory after frequency doubling to 674 nm (scaled to 1348 nm for comparison). The noise increases slightly around 10 Hz-1 kHz offset frequencies. b, Fractional frequency instability measured for the 1348 nm ISCL before and after the fiber link. The fiber noise is most prominent near 10 ms averaging time.
