用于全光缓存的光阈值门理论和实验研究  

Experimental and Theoretical Investigations on Optical Threshold Function Used in All-Optical Buffer

作　　者：陈祥[1] 张新亮[1] 黄德修[1] 

机构地区：[1]华中科技大学武汉光电国家实验室(筹)和光电子科学与工程学院,武汉430074

出　　处：《光子学报》2007年第11期2075-2078,共4页Acta Photonica Sinica

基　　金：教育部新世纪优秀人才计划( NCET-04-0715);湖北省杰出青年基金(2006ABB017)资助

摘　　要：提出了一种基于光阈值门的全光缓存方案,采用两个非对称的SOA环形腔激光器耦合构成光阈值门,其输出光可以在两种波长上切换,可控制波长转换器实现光包路由,从而将需缓存的数据包路由到缓存端口,避免了复杂的包头处理.建立了光阈值门的理论模型,对10 Gbit/s的光阈值门的动态特性进行了数值模拟和实验研究,实验结果和理论计算结果相符合,实验也表明光阈值门两种输出状态的消光比可达30dB.An all-optical buffer using an OTF （optical threshold function） is demonstrated. The OTF consists of two coupled asymmetrical SOA ring lasers. It has two output states at two wavelengths. Optical packets can be routed to the buffer port by using the OTF that controls a wavelength converter switch. Theoretical model for the OTF is established. Numerical calculation and experimental evidence of its dynamic output at 10 Gbit/s are given. The experiment results are in agreement with the calculation results. The results indicate that a contrast ratio of about 30 dB between the output states in OTF can be obtained.

关 键 词：全光缓存 光阈值门 半导体光放大器 环形腔激光器 

分 类 号：TN929.11[电子电信—通信与信息系统]