Author(s): Fan, XJ (Fan, Xiaojie); Chen, YF (Chen, Yinfang); Cao, XH (Cao, Xuhua); Zhu, S (Zhu, Sha); Li, M (Li, Ming); Zhu, NH (Zhu, Ninghua); Li, W (Li, Wei)

Source: OPTICS EXPRESS Volume: 30 Issue: 17 Pages: 30149-30163 DOI: 10.1364/OE.463231 Published: AUG 15 2022

Abstract: A photonic-assisted frequency downconverter with self-interference cancellation and fiber dispersion elimination is proposed for in-band full-duplex (IBFD) radio-over-fiber (ROF) systems based on stimulated Brillouin scattering. In this work, a dual-polarization Mach-Zehnder modulator (DPol-MZM) is employed to cancel the self-interference signal in the optical domain, thus the proposed system has a large operation bandwidth without the limitation of the electrical bottleneck. Meanwhile, a widely tunable microwave photonic filter (MPF) based on stimulated Brillouin scattering (SBS) is constructed to perform carrier-suppressed single-sideband modulation of LO. Therefore, the proposed photonic frequency downconverter is naturally free from fiber dispersion. Furthermore, thanks to the characteristics of the SBS-based MPF, such as large out-of-band rejection ratio, high resolution and wideband tunability, the proposed system has a high flexibility and downconversion efficiency, which is of great significance for IBFD ROF systems. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Accession Number: WOS:000842044600025

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Li, Ming                  0000-0001-8959-9619

ISSN: 1094-4087

Full Text: https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-17-30149&id=488533