LFM-Costas waveform generation based on a Fourier domain mode locking optoelectronic oscillator

Xiangrui Tian; Lingjie Zhang; Huan Tian; Zhiyao Zhang; Heping Li; Yong Liu

doi:10.1117/12.2601394

9 October 2021 LFM-Costas waveform generation based on a Fourier domain mode locking optoelectronic oscillator

Xiangrui Tian, Lingjie Zhang, Huan Tian, Zhiyao Zhang, Heping Li, Yong Liu

Proceedings Volume 11902, Real-time Photonic Measurements, Data Management, and Processing VI; 1190218 (2021) https://doi.org/10.1117/12.2601394
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

A linear frequency modulation (LFM)-Costas waveform generation scheme is proposed and experimentally demonstrated based on a Fourier domain mode locking (FDML) optoelectronic oscillator (OEO). The FDML OEO is established based on stimulated Brillouin scattering (SBS) effect, where the Costas-coded probe light is realized by employing an open-loop voltage controlled oscillator (VCO) via electro-optic frequency shift. In the experiment, an LFM-Costas waveform with a 12-bit Costas sequence, a chirp rate of 39.234 MHz/μs and a period of 20.390 μs is generated in the frequency range of 8.020 GHz to 8.820 GHz. The generated LFM-Costas waveform has good pulse-to-pulse coherence according to the correlation results, and has been used to detect two targets with a distance difference of 0.30 m and 0.20 m

Citation Download Citation

Xiangrui Tian, Lingjie Zhang, Huan Tian, Zhiyao Zhang, Heping Li, and Yong Liu "LFM-Costas waveform generation based on a Fourier domain mode locking optoelectronic oscillator", Proc. SPIE 11902, Real-time Photonic Measurements, Data Management, and Processing VI, 1190218 (9 October 2021); https://doi.org/10.1117/12.2601394

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