Radio-frequency arbitrary waveform generation based on dispersion compensated tunable optoelectronic oscillator with ultra-wide tunability

Authors:
  • AWAnle Wang
    Anle Wang
  • JWJianghai Wo
    Jianghai Wo
  • JZJin Zhang
    Jin Zhang
  • XLXiong Luo
    Xiong Luo
  • XXXin Xu
    Xin Xu
  • DZDaoming Zhang
    Daoming Zhang
  • PDPengfei Du
    Pengfei Du
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Abstract
Photonic generation of radio-frequency (RF) arbitrary microwave waveform with ultra-wide frequency tunable range based on a dispersion compensated optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. Dispersion compensation scheme and specially designed fiber Bragg grating (FBG)-based Fabry–Perot (F-P) filters are employed in the OEO loop to realize a frequency tunable range of 3.5–45.4 GHz. An optimization process provided by the combination of an erbium-doped fiber amplifier (EDFA) and FBG is employed to improve the signal-to-noise ratio (SNR) of final RF signals. The generation of linear-frequency and phase-coded microwave waveforms, with a tunable carrier frequency ranging from 4 to 45 GHz and tuned chirping bandwidths or code rates, is experimentally demonstrated.