ID 原文 译文
51357 针对相干光纤通信系统中匹配滤波（如根升余弦滤波器）对系统的影响，文章在不同光学带宽、残余色散以及非线性情况下，对不同滚降因子Rf的系统特性进行了研究。 Aiming at the influence of matched filter(e. g. root raised cosine filter) on the coherent optical fiber communication system, the effect of roll-off factor(Rf) are studied under different value of optical bandwidth, residual dispersion and nonlinearity.
51358 文章分别仿真研究了256 Gbit/s偏振复用16阶正交幅度调制（PDM-16QAM）信号在光学带宽为33、50及100 GHz时的传输特性、残余色散在-300～300 ps/nm区间内的特性和注入功率为-3～4 dBm情况下传输1 200 km光纤链路的特性。 Simulations are carried out for 256 Gbit/s Polarization Division Multiplexing-16 Quadrature Amplitude Modulation(PDM-16 QAM) signals when the optical bandwidth are 33, 50 and 100 GHz, the residual dispersion ranging from-300 to 300 ps/nm and launched power ranging from-3 to 4 dBm in a 1 200 km optical fiber link.
51359 仿真结果表明，对于光学带宽受限的系统，Rf选取（1+Rf）B（B为信号波特率）与系统光学带宽相近的值为宜; The simulations show that a good transmission performance can be achieved for limited optical bandwidth system when Rf is set to the value of(1+Rf) B(B is the Baud rate of the signal) that similar to the system optical bandwidth.
51360 对于光学带宽接近两倍波特率的系统，滚降因子Rf选取0. 2～0. 5为宜。 When optical bandwidth near or exceed 2 times Baud rate of signals, Rf should be set between 0. 2 and 0. 5 to achieve a better transmission performance.
51361 针对纤芯包层复合结构光纤布拉格光栅（FBG）制备难度较大的问题， It is difficult to prepare Fiber Bragg Grating(FBG) with integrated structure of core-and-cladding.
51362 文章首先分析了复合结构FBG的结构特征， This paper first analyzes the structure characteristics of FBG with integrated structure.
51363 然后从光纤耦合模理论出发，利用Rsoft结合Matlab软件分别模拟了单独存在的纤芯、包层光栅以及复合结构光栅的反射光谱， Based on the optical fiber coupled-mode theory, Rsoft and Matlab are used to simulate the reflection spectra of fiber cores, cladding gratings and integrated gratings respectively.
51364 并且通过改变光栅周期、栅区长度以及调制深度，对复合结构FBG的反射光谱特性进行了仿真分析。 The reflection spectrum characteristics of FBG with integrated structure are analyzed in the simulation with different grating period, grating length and modulation depth.
51365 仿真结果表明，光栅周期为541 nm并固定其他参数时，单独的纤芯与包层光栅中心反射波长分别为1 563. 4和1 558. 0 nm， The simulation results show that when the grating period is 541 nm and other parameters are fixed, the central reflection wavelength of the separate fiber core and cladding grating is 1 563. 4 and 1 558. 0 nm respectively,
51366 复合结构光栅获得了具有相同中心波长的双峰反射光谱; and the integrated grating can obtain the bimodal reflection spectrum with the same central wavelength.