Author Affiliations
Abstract
Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
An all-optical format conversion from non-return-to-zero (NRZ) to return-to-zero (RZ) is presented based on cross-phase modulation (XPM) in a silicon waveguide with a detuned optical bandpass filter (OBPF). The simulation results show that the tunable bandwidth of the OBPF leads to RZ signals with tunable pulse width. The conversion efficiency (CE) and the pattern effect of the RZ signal are attributed to the parameters of the pump pulse and the OBPF. The converted RZ signal exhibits lower timing jitter than the NRZ signal.
浙江大学 信息与电子工程学系， 杭州 310027
对硅狭缝光波导色散特性进行了数值研究.研究结果表明，在1.55 μm工作波长附近，硅狭缝光波导色散随结构参量的改变而改变，一般在-1 000 ps/(nm·km)以下，最大可达到-6 700 ps/(nm·km)左右，同时其相对色散斜率可小于0.009 nm-1.因此，选取合适的结构参量，硅狭缝光波导可被用于补偿高速宽带光通信链路的残余色散，且比现有的色散补偿光纤具有一定的优势.
光波导 狭缝 硅 色散特性 色散补偿 Optical waveguide Slot Silicon Dispersion characteristics Dispersion compensation
