Characterization Of Narrowband 100 GHz Signals Generated By A Spectrally Interleaved Microcomb SourcePaper (OPTO11)
Fri, 13 Nov 2020 06:15pm to 06:30pm
We report generation and characterization of narrowband 100 GHz signals via a uni-travelling-carrier photodiode (UTC-PD) pumped by a spectrally interleaved mode-locked microcomb source. The output frequency was characterized by directly detecting the optical beat signals with a fast photodiode and then mixing with a multiplied local oscillator (LO) in an electrical spectral analyzer (ESA). The 3 dB bandwidth below 10 kHz was observed without any feedback control even when pumped by multiple lines of combs. Our results highlight future possibilities of stable and compact millimeter-wave / terahertz signal sources with low power consumption.
Authors: Furusawa, Kentaro ; Morohashi, Isao; Sekine, Norihiko; Kasamatsu, Akifumi; Uzawa, Yoshinori
National Astronomical Observatory of Japan, National Institute of Information and Communications Technology