Improving Dynamic Range of RoF System Using Dual-Drive Mach-Zehnder Modulator

被引：0
|
作者：
Zacharias, Joseph [1 ]
Civin, V. [1 ]
Narayanan, Vijayakumar [2 ]
机构：
[1] Rajiv Gandhi Inst Technol, Dept Elect & Commun, Kottayam, Kerala, India
[2] Govt Engn Coll, Dept Elect & Commun, Barton Hill, Thiruvananthapuram, Kerala, India
来源：
OPTICAL AND WIRELESS TECHNOLOGIES, OWT 2017 | 2018年 / 472卷
关键词：
RoF; Dynamic range; Nonlinearity; MICROWAVE PHOTONIC LINK; OVER-FIBER SYSTEM; POLARIZATION MODULATOR; PERFORMANCE; IMPROVEMENT;
D O I：
10.1007/978-981-10-7395-3_13
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel radio over fiber (RoF) system incorporating a dual-electrode dual-parallel Mach-Zehnder modulator (DE-DPMZM) is used to transmit vector signal to minimize the distortions that are caused by the Mach-Zehnder modulator (MZM) nonlinearity. The MZMs are biased such that the offset voltage in both the MZMs is opposite. A 30 MSym/s 16-QAM signal is transmitted after single-sideband modulation, and the detected signal is analyzed for its error vector magnitude (EVM) performance. The measured EVM is 8.363% which shows there is much improvement in the EVM performance. The system is cost-effective since it rectifies the nonlinearities of the Mach-Zehnder modulator using the simplest optical methods and the EVM% shows that proposed biasing results in higher dynamic range.
引用
收藏
页码：123 / 130
页数：8
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