中国光学期刊网

RF self-interference is a key issue for the application of in-band full-duplex communication in B5G and 6G communications. Compared with the electronic technology, the photonic technology has the advantages of wide bandwidth and high tuning precision, exhibiting the great potential to realize high interference cancellation depth over broad band. In this paper, a comprehensive overview of photonic enabled RF self-interference cancellation (SIC) is presented. The operation principle of photonic RF SIC is introduced and the advances in implementing photonic RF SIC according to the realization mechanism of phase reversal are summarized. For further realistic applications, the multipath RF SIC and the integrated photonic RF SIC are also surveyed. Finally, the challenges and opportunities of photonic RF SIC technology are discussed.