Photonic generation of ASK microwave signals with SSB format
Received date: 06 Mar 2023
Accepted date: 11 Jun 2023
Copyright
Optical 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.
Weilei Gou , Yuan Yu , Xinliang Zhang . Photonic generation of ASK microwave signals with SSB format[J]. Frontiers of Optoelectronics, 2023 , 16(3) : 20 . DOI: 10.1007/s12200-023-00075-2
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