多波长双二进制载波抑制归零码光分组产生方法研究  

Method of Multi-Wavelength Duobinary-Carrier-SuppressedReturn-to-Zero Optical Packets Generation

作　　者：贺彬彬[1] 凌云[1] 廖丽丹[1] 申甦祺 邱昆[1] 郑勉[2] 

机构地区：[1]电子科技大学光纤传感与通信教育部重点实验室,四川成都610054 [2]西南石油大学电气信息学院,四川成都637001

出　　处：《光学学报》2015年第4期83-88,共6页Acta Optica Sinica

基　　金：国家863计划(2012AA011304;2013AA011502);国家自然科学基金(61101095;61271166);西南石油大学青年基金(2012XJZ022)

摘　　要：为了简化多波长光分组交换系统的发送端结构,提出了一种基于马赫-曾德尔延时干涉仪(MZDI)器件实现多波长双二进制载波抑制归零码(DCS-RZ)格式的光分组产生方法。该方法采用单个MZDI器件将波分复用(WDM)差分相移键控(DPSK)净荷信号转换成WDM DCS-RZ净荷信号,同时完成WDM非归零码(NRZ)标签与净荷信号的耦合,得到WDM DCS-RZ光分组信号。通过4×40 Gb/s DCS-RZ光分组信号产生、传输和分离仿真实验,验证了方法的可行性。仿真结果表明:240 km光纤传输后,净荷在经过法布里-珀罗(F-P)滤波器分离后接收灵敏度仅下降1.8 d B。In order to simplify the transmitter structure of the multi-wavelength optical packets switching system,a method of multi-wavelength optical packets generation based on Mach-Zehnder delay interferometer（MZDI）is proposed. Only one MZDI is used to transform the payload format from wavelength division multiplexing（WDM）differential phase shift keying（DPSK） to WDM duobinary- carrier- suppressed- return- to- zero（DCS- RZ）,meanwhile, couple the WDM non-return-to-zero（NRZ） label with the WDM payload and produce the WDM DCSRZ optical packets at the output of MZDI. A simulation of 4 × 40 Gb/s DCS- RZ optical packets is generated,transmitted into fiber and then separated into the label and payload. Detection is performed to verify the feasibility of this method. The simulation results show that after 240 km fiber transmission, the power penalty of the payload after the separation using Fabry-Perot（F-P） filter is only 1.8 dB.

关 键 词：光通信 光分组交换 双二进制载波抑制 马赫-曾德尔延时干涉仪 

分 类 号：TN929.11[电子电信—通信与信息系统]