Radio-over-fiber system with octuple frequency optical millimeter-wave signal generation using dual-parallel Mach–Zehnder modulator based on four-wave mixing in semiconductor optical amplifier

Hui Zhou; Yuting Zeng; Ming Chen; Yunlong Shen

doi:10.1117/1.OE.57.3.036101

5 March 2018 Radio-over-fiber system with octuple frequency optical millimeter-wave signal generation using dual-parallel Mach–Zehnder modulator based on four-wave mixing in semiconductor optical amplifier

Hui Zhou, Yuting Zeng, Ming Chen, Yunlong Shen

Author Affiliations +

Optical Engineering, Vol. 57, Issue 3, 036101 (March 2018). https://doi.org/10.1117/1.OE.57.3.036101

Abstract

We have proposed a scheme of radio-over-fiber (RoF) system employing a dual-parallel Mach–Zehnder modulator (DP-MZM) based on four-wave mixing (FWM) in a semiconductor optical amplifier (SOA). In this scheme, the pump and the signal are generated by properly adjusting the direct current bias, modulation index of the DP-MZM, and the phase difference between the sub-MZMs. Because of the pump and the signal deriving from the same optical wave, the polarization states of the two lightwaves are copolarized. The single-pump FWM is polarization insensitive. After FWM and optical filtering, the optical millimeter-wave with octuple frequency is generated. About 40-GHz RoF system with a 2.5-Gbit / s signal is implemented by numerical simulation; the result shows that it has a good performance after the signal is transmitted over 40-km single-mode fiber. Then, the effects of the SOA’s injection current and the carrier-to-sideband ratio on the system performance are discussed by simulation, and the optimum value for the system is obtained.

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Hui Zhou, Yuting Zeng, Ming Chen, and Yunlong Shen "Radio-over-fiber system with octuple frequency optical millimeter-wave signal generation using dual-parallel Mach–Zehnder modulator based on four-wave mixing in semiconductor optical amplifier," Optical Engineering 57(3), 036101 (5 March 2018). https://doi.org/10.1117/1.OE.57.3.036101

Received: 29 September 2017; Accepted: 16 January 2018; Published: 5 March 2018

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