Title :
Low-noise synthesis of microwave and millimetre-wave signals with optical frequency comb generator
Author :
Xiao, Shiwu ; Hollberg, L. ; Diddams, Scott A.
Author_Institution :
Time & Freq. Div., Nat. Inst. of Stand. & Technol., Boulder, CO
Abstract :
The phase noise of a 20 GHz picosecond optical pulse train generated by a modulator-based optical frequency comb generator is analysed. The residual timing jitter is 10 fs for Fourier frequencies from 10 Hz to 10 MHz. Photodetection of the optical pulse train provides millimetre-wave signals with similarly low residual jitter at 40, 60, and 80 GHz with applicable powers of 7.5, 10.5, and 13 dBm, respectively.
Keywords :
microwave photonics; millimetre wave devices; optical harmonic generation; optical modulation; optical noise; optical pulse generation; phase noise; photodetectors; signal synthesis; timing jitter; Fourier frequency; frequency 10 Hz to 10 MHz; frequency 20 GHz; frequency 40 GHz; frequency 60 GHz; frequency 80 GHz; low-noise microwave signal synthesis; millimetre-wave signal; modulator-based optical frequency comb generator; optical pulse train photodetection; phase noise analysis; residual timing jitter; time 10 fs;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20093593
