论文部分内容阅读
为实现高速光纤通信系统中的偏振模色散(PMD)补偿,提出了基于高双折射线性啁啾光纤光栅(Hi-BiLCFBG)的线性应变梯度悬臂梁作为PMD补偿器,同时考虑到波分复用(WDM)系统中不同信道PMD值不同,提出了取样啁啾(CSP)与周期啁啾(CGP)的等效,利用带有CSP的高双折射取样光纤光栅(Hi-Bi SFBG)制成多信道PMD补偿器,不同信道等效的啁啾系数不同,从而可同时实现多个信道的PMD补偿。实验中,实现了40Gb/s的传输系统中最大58.6 ps的差分群时延(DGD)补偿,补偿后,信号眼图张开度有明显改善,从而证明了该PMD补偿器的有效性与可行性。
To achieve PMD compensation in high-speed optical fiber communication system, a linear strain gradient cantilever beam based on high birefringence linear chirped fiber gratings (Hi-BiLCFBG) is proposed as PMD compensator, (CSP) and periodic chirp (CGP) are proposed based on the different PMD values of different channels in a WDM system. High-birefractive sampling fiber gratings with CSP (Hi-Bi SFBG) Channel PMD compensator, different channel equivalent chirp coefficient is different, thus can realize PMD compensation of many channels at the same time. In the experiment, the differential group delay (DGD) compensation of 58.6 ps in 40Gb / s transmission system was achieved. After compensated, the signal eye opening was significantly improved, which proves the effectiveness and feasibility of the PMD compensator.