Open AccessBroadband radio-frequency signal synthesis by photonic-assisted channelization
Author(s) -
Feifei Yin,
Zikai Yin,
Xiangzhi Xie,
Yitang Dai,
Kun Xu
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.428119
Subject(s) - narrowband , phase shift keying , signal (programming language) , radio frequency , optics , channelized , broadband , physics , bandwidth (computing) , waveform , phase modulation , modulation (music) , computer science , telecommunications , phase noise , acoustics , bit error rate , channel (broadcasting) , radar , programming language
A channelized radio-frequency (RF) signal synthesis scheme is proposed to generate broadband RF signals with reconfigurable waveform, center frequency and instantaneous bandwidth. Based on dual optical frequency combs (OFCs) with different free spectrum ranges (FSRs), multiple narrowband signals are up-converted and synthesized into a broadband signal. Reconfigurable waveforms are generated in the simulation, including a symmetrical triangular linear frequency modulation continuous wave (STLFMCW) signal and a binary phase shift keying (BPSK) signal. In addition, to realize phase stability among channels, dual OFCs are differently modulated through polarization-multiplexing electro-optical modulators (EOMs). An RF signal synthesis experiment shows the relative phase fluctuation among channels is only 1.8°.