论文部分内容阅读
研究了基于双臂马赫-曾德尔调制器(MZM)产生全光正交频分复用信号的原理,讨论了正交光子载波的产生由MZM的射频驱动和直流偏置电压决定的特性;并对基于载波抖动对系统的损伤定义了一个新的参数——载波均衡,以准确地描述产生全光正交频分复用载波的传输性能。根据选择的载波均衡参数,得到了产生2,3,4和5条正交光载波的最佳工作点;在接收端采用改进的马赫-曾德尔延时干涉仪和光门实现全光离散傅里叶变换,并测得了光门的相位取值和接收端滤波器带宽对接收信号误码性能的影响;最后研究了基于5条正交光边带100 Gb/s全光正交频分复用的传输系统性能。
The principle of generating all-optical Orthogonal Frequency-Division Multiplexing (OFDM) signal based on two-arm Mach-Zehnder modulator (MZM) is studied. The characteristics of Orthogonal Photonic Carrier (OCDC) driven by RF drive and DC bias voltage of MZM are discussed. A new parameter, carrier equalization, is defined based on carrier jitter damage to the system to accurately describe the transmission performance of the PQ-OFDM carrier. According to the selected carrier equalization parameters, the optimal operating points for generating 2, 3, 4 and 5 orthogonal optical carriers are obtained. At the receiving end, an improved Mach-Zehnder delay interferometer and light gate are used to realize the all-optical discrete Fourier transform And the effect of the phase of the light gate and the filter bandwidth of the receiver on the error performance of the received signal were measured. Finally, the effects of 100 Gb / s Orthogonal Frequency Division Multiplexing Transmission system performance.