CAJ | 학술논문

首次提出了利用单个波长实现光矢量调制技术的方法。在提出的方案中，通过直接控制双驱动马赫曾德尔调制器（ DD－MZM ）的射频驱动电压初始相位来获得正交条件，并在接受机端用一个纠正电路对接收信号进行调整。这种调制方式由于仅采用一个波长，不仅提高了光载波的频谱利用率，而且使正交条件不受光纤长度的影响，从而增加了整个系统的灵活性。仿真结果论证了QPSK和16－QAM两种调制格式下速率分别为2Gbit／s和4Gbit／s的42GHz毫米波信号生成。
수차제출료이용단개파장실현광시량조제기술적방법。재제출적방안중，통과직접공제쌍구동마혁증덕이조제기（ DD－MZM ）적사빈구동전압초시상위래획득정교조건，병재접수궤단용일개규정전로대접수신호진행조정。저충조제방식유우부채용일개파장，불부제고료광재파적빈보이용솔，이차사정교조건불수광섬장도적영향，종이증가료정개계통적령활성。방진결과론증료QPSK화16－QAM량충조제격식하속솔분별위2Gbit／s화4Gbit／s적42GHz호미파신호생성。
A novel method was proposed to implement Photonic Vector Modulation ( PVM ) with single wavelength .In the proposed scheme , the orthogonality condition was acquired by directly controlling the initial phase of the radio frequency drive voltage , which is applied on both electrodes of a dual -drive Mach-Zehnder modulator ( DD-MZM) .A correcting circuit was used to correct the receipted signal in the receiver .Because only one wavelength was employed , this modulation system not only improved the frequency spectrum utilization of optical carrier , but also gave us the additional flexibility since the orthogonality condition is not affected by the fiber length.Simulation result shows that a 2Gbit/s QPSK and a 4Gbit/s 16-QAM signal of 42GHz millimeter wave were generated respectively .