Ontology highlight
ABSTRACT:
SUBMITTER: Endo M
PROVIDER: S-EPMC5847530 | biostudies-literature | 2018 Mar
REPOSITORIES: biostudies-literature
Endo Mamoru M Shoji Tyko D TD Schibli Thomas R TR
Scientific reports 20180312 1
We demonstrate the use of two dual-output Mach-Zehnder modulators (DO-MZMs) in a direct comparison between a femtosecond (fs) pulse train and a microwave signal. Through balanced detection, the amplitude-to-phase modulation (AM-PM) conversion effect is suppressed by more than 40 dB. A cross-spectrum technique enables us to achieve a high-sensitivity phase noise measurement (-186 dBc/Hz above 10-kHz offset), which corresponds to the thermal noise of a +9 dBm carrier. This method is applied to com ...[more]