摘要
全光缓存器能够在光域内对数据包进行缓存,解决数据包在节点的冲突。提出了一种新型可擦写的全光缓存器,该缓存器以半导体光放大器(SOA)为非线性相移器件,利用信号光和控制光在半导体光放大器中的交叉相位调制实现信号在光域内的"写入"和"读出"。在注入信号峰值功率相同的条件下,双半导体光放大器结构的采用还可以对信号光实现功率补偿,比利用单个半导体光放大器进行"写入/读出"控制延长了缓存时间,并能有效克服在数据包"写入"缓存器时造成的输出端口处信号光的泄漏。该缓存器顺利实现了2.5 Gb/s数据包的多圈缓存。
All-optical buffer can store the packet, which can solve the problem of node collision when transmitting packets in optical domain, and will become an important element in all-optical network. This paper presents a novel erasable all-optical buffer which realizes the ＂write＂ and ＂read＂ function. Two semiconductor optical amplifiers （SOA） which are used as the nonlinearity element can also compensate the power attenuation at the same time. Compared with the single semiconductor optical amplifier configuration, the storage time is prolonged greatly when the same signal power is introduced. This configuration can overcome the ＂packet leakage＂ effectively on the output port because of the ＂write＂ operation. The buffer can store the packet transmitting at the speed of 2. 5 Gb/s successfully.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2007年第11期1945-1949,共5页
Acta Optica Sinica
基金
国家自然科学基金(60577020
60672004)资助课题
关键词
光通信
全光缓存器
3×3平行排列耦合器
半导体光放大器
交叉相位调制
optical communication
all-optical buffer
3 × 3 collinear fiber coupler
semiconductor optical amplifier
cross-phase modulation
