Open AccessSi3N4-chip-based versatile photonic RF waveform generator with a wide tuning range of repetition rate
Author(s) -
Zihang Zhu,
Yang Liu,
Moritz Merklein,
Ziqian Zhang,
David Marpaung,
Benjamin J. Eggleton
Publication year - 2020
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.383876
Subject(s) - algorithm , computer science , analytical chemistry (journal) , chemistry , chromatography
In this Letter, we demonstrate a ${{\rm Si}_3}{{\rm N}_4}$Si 3 N 4 -chip-based photonic approach to generate versatile radio frequency (RF) waveforms with a large tuning range of repetition rates. The amplitude and phase of the RF-phase-modulated signal are spectrally manipulated to synthesize Fourier coefficients of the desired RF waveforms by controlling the resonance conditions and frequencies of ${{\rm Si}_3}{{\rm N}_4}$Si 3 N 4 optical ring resonators. Full-duty-cycle triangular, square, and sawtooth waveforms with widely tunable repetition rates from 1 to 13 GHz were experimentally generated.