摘要
利用DP-QPSK调制器设计了一种光域微波矢量信号发生器。DP-QPSK调制器的一路QPSK输入单频微波信号,双偏振正交的另一路QPSK输入I/Q数据信号,设置合适的偏置电压和工作点,分别得到光域SSB-CS信号和基带矢量信号,再通过起偏器进行拍频,最终得到光域微波矢量信号。经过实验验证,工作在10.5GHz的DP-QPSK调制器可产生速率为1.25Gbaud的矢量信号。
A novel photonic approach to generate microwave vector signal using a dual-polarization quadrature phase-shift keying (DP-QPSK) modulator is proposed. One of the QPSK modulator in the DP-QPSK modulator is driven by a single-frequency microwave signal, and the other QPSK modulator which double orthogonal polarization with the former is driven by I/Q data streams. By properly setting the biases, a single-sideband carrier suppressed (SSB-CS) signal and a baseband vector signal carried by the optical carrier are generated. The experiment confirms that it can be generated a 1.25Gbaud vector signal by the DP-QPSK modulator at 10.5GHz
出处
《光通信技术》
北大核心
2017年第8期17-20,共4页
Optical Communication Technology
基金
国家自然科学基金项目(61504170)资助
江苏省自然科学基金青年基金项目(BK201607907)资助
江苏高校品牌专业建设工程资助项目(PPZY2015A092)资助
江苏省高等职业院校教师高级访问工程师计划(2014FG062)资助
江苏高校"青蓝工程"资助
关键词
光载无线
双偏振正交
相移键控
光域微波矢量信号
radio over fiber (RoF)
dual-polarization quadrature
phase-shift keying
photonic generation of microwave vector signal