Title :
Optical frequency combs and applications at NPL
Author :
Margolis, H.S. ; Marra, Giuseppe ; Tsatourian, Veronika ; Lea, Stephen ; Reid, Derryck T. ; Gill, P.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
The phase noise measured at the “user” end with and without active suppression of the noise introduced in the optical link is shown in Fig. 4. At 1 Hz offset from the carrier the noise is suppressed by more than 10 dB to -101 dBc/Hz. The feedback bandwidth achieved is limited to about 10 Hz by the high voltage amplifier used to drive the fibre stretcher. With improved hardware the feedback bandwidth could be increased towards the theoretical limit of 2 kHz, imposed by the 0.5 ms round-trip travel time of the pulse train.
Keywords :
frequency standards; light interferometry; microwave measurement; optical fibre networks; optical variables measurement; Al2O3:Ti; NPL application; carrier-envelope offset frequency stabilization; fibre stretcher; noise-insensitive interferometer; optical fibre networks; optical frequency comb; optical link; pulse train; self-referencing interferometer; ultra-low phase noise microwave frequency references;
Conference_Titel :
EFTF-2010 24th European Frequency and Time Forum
Conference_Location :
Noordwijk
Print_ISBN :
978-1-4673-5970-2
DOI :
10.1109/EFTF.2010.6533707
