A single sideband radio-over-fiber system with improved dynamic range incorporating a dual-electrode dual-parallel Mach-Zehnder modulator

作者：Sun Jingling^*; Yu Lan; Zhong Yanping

来源：Optics Communications, 2015, 336: 315-318.

DOI：10.1016/j.optcom.2014.10.022

• Radio-over-fiber
• Spurious-free dynamic range
• The third-order inter modulation distortion
• Single sideband modulation
• Mach-Zehnder modulator

A novel single sideband (SSB) radio-over-fiber (ROF) system based on a dual-electrode dual-parallel Mach-Zehnder modulator (DE-DPMZM) is proposed, in which the Mach-Zehnder modulator (MZM) is used to produce a single sideband signal and the dual-parallel structure is used to suppress the third-order intermodulation distortion (IMD3) to improve the spurious-free dynamic range (SFDR) of the ROF system. A theoretical analysis is given and simulation experiment is carried out. The results show that the proposed scheme can improve 25 dB in SFDR which is up to 127.854 dB Hz(2/3) compared with the conventional SSB ROF system. In addition, the single sideband modulation can extend the transmission distance of optic signal.

• 出版日期2015-2-1