Author:
Gou Weilei,Yu Yuan,Zhang Xinliang
Abstract
AbstractOptical beating is the usual approach to generation of microwave signals. However, the highest frequency achievable for microwave signals is limited by the bandwidths of optoelectronic devices. To maximize the microwave frequency with a limited bandwidth of a photodetector (PD) and relieve the bandwidth bottleneck, we propose to generate microwave signals with the single sideband (SSB) format by beating a continuous wave (CW) light with an optical SSB signal. By simply adjusting the frequency difference between the CW light and the carrier of the optical SSB signal, the frequency of the generated microwave SSB signal is changed correspondingly. In the experiment, amplitude shift keying (ASK) microwave signals with the SSB format are successfully generated with different carrier frequencies and coding bit rates, and the recovered coding information agrees well with the original pseudo random binary sequence (PRBS) of 27 − 1 bits. The proposed approach can significantly relieve the bandwidth restriction set by optoelectronic devices in high-speed microwave communication systems.
Graphical Abstract
Publisher
Springer Science and Business Media LLC
Subject
Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials
Reference20 articles.
1. Poisel, R.: Introduction to communication electronic warfare systems. Norwood, Chicago (2008)
2. Simon, M.K., Omura, J.K., Scholtz, R.A., Levitt, B.: Spread spectrum communications handbook. New York, USA (1994)
3. Zhu, S., Li, M., Wang, X., Zhu, N.H., Cao, Z.Z., Li, W.: Photonic generation of background-free binary phase-coded microwave pulses. Opt. Lett. 44(1), 94–97 (2019)
4. Proakis, J.G.: Digital communication. USA (2003)
5. Yao, J.P.: Microwave photonics. J. Lightwave Technol. 27(3), 314–335 (2009)