SCIENTIFIC PUBLICATION: Multi-arm Ultra-low Noise Er:fiber Frequency Comb Comparison
Multi-arm Ultra-low Noise Er:fiber Frequency Comb Comparison
M. Giunta, W. Hänsel, M. Fischer, M. Lezius, & R. Holzwarth
We have performed a multi-arm Er:fiber-based frequency comb comparison. The beat frequencies are simultaneously realized over 90 THz (from 192 to 282 THz) showing an integrated phase noise below 55 mrad (1 Hz-1 MHz) and an overlapping ADEV of 5x10-17 at 1s, averaging below 1x10-18 at 100s (PI-mode).