Broadband programmable radio frequency signal generation based on ultrafast optical pulse shaping

Jie Yang; Tian Jiang; Jianghua Zhang; Ke Yin; Xin Zheng; Jie You

doi:10.1117/12.2524280

29 March 2019 Broadband programmable radio frequency signal generation based on ultrafast optical pulse shaping

Jie Yang, Tian Jiang, Jianghua Zhang, Ke Yin, Xin Zheng, Jie You

Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 110461C (2019) https://doi.org/10.1117/12.2524280
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China

Abstract

Broadband radio frequency signal generation based on ultrafast optical pulse shaping, which is a typical microwave photonic technology, has been performed. The ultrafast optical pulse starts from our home-made mode-locked laser which has a repetition rate of ~171 MHz and spans from 1524 nm to 1593 nm. Following the MLL is an optical amplifier which makes up for the loss of the photonic link. A commercial pulse shaper is introduced to flatten and shape the spectrum of the optical pulse. However, it results in a additionally frequency cutoff. Only the C-band (5 THz optical bandwidth) is used efficiently which results in waste of spectrum resources. Then, the shaped pulses travel through a 5km long optical fiber realizing frequency-to-time mapping. The RF signal is acquired from the optical intensity profile by a high-speed photodetector at last. Several different kinds of wideband RF signals are generalized from the same hardware system, such as trigonometric and linear frequency-chirped waveform from 2 GHz up to 3 GHz, These results may be of interest to the radar and communication systems with ultraband RF signals.

Citation Download Citation

Jie Yang, Tian Jiang, Jianghua Zhang, Ke Yin, Xin Zheng, and Jie You "Broadband programmable radio frequency signal generation based on ultrafast optical pulse shaping", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110461C (29 March 2019); https://doi.org/10.1117/12.2524280

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