Author(s): Li, GY (Li, Guangyi); Meng, XY (Meng, Xiangyan); Wang, L (Wang, Lu); Li, M (Li, Ming); Zhu, NH (Zhu, Ninghua); Li, W (Li, Wei)

Source: APPLIED OPTICS Volume: 61 Issue: 36 Pages: 10700-10706 DOI: 10.1364/AO.475950 Published: DEC 20 2022

Abstract: A radio-over-fiber (RoF) link with high spectral efficiency using digital phase cancellation is proposed and exper-imentally verified. The link can be utilized to transmit four microwave vector signals. The four microwave vector signals are modulated on optical signals by using a dual-polarization dual-parallel Mach-Zehnder modulator at the transmitter. The optical signals subsequently pass through a spool of single-mode fiber (SMF) and are sent into a coherent receiver. A digital signal processing (DSP) algorithm is proposed to eliminate the phase noise and frequency difference caused by two free-running lasers at transmitter and receiver. Two 16-quadrature amplitude modulation (16-QAM) vector signals at 6 GHz and another two 16-QAM vector signals at 7 GHz transmit over a 10-km SMF and are successfully recovered after a DSP algorithm. In order to evaluate the transmission per-formance of the RoF link, error vector magnitudes and bit error rates are also estimated.(c) 2022 Optica Publishing Group

Accession Number: WOS:000921196600002

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Li, Ming                  0000-0001-8959-9619

ISSN: 1559-128X

eISSN: 2155-3165

Full Text: https://opg.optica.org/ao/fulltext.cfm?uri=ao-61-36-10700&id=524212