摘要
在分析CROSSBAR网络(CN)和BANYAN网络(BN)结构的基础上,提出了一种新的扩展BANYAN网络(EBN)可重构无阻塞结构。以8×8矩阵光开关为例,分析了EBN结构的两种形式及其可重构无阻塞特性,给出了开关单元驱动逻辑。从理论上计算了SiO2波导EBN结构矩阵光开关的光学损耗和功耗。对于8×8开关,插入损耗为3.3 dB。按理论计算设计制作了8×8矩阵光开关,测得波导传输损耗为0.1 dB/cm,光纤-波导耦合损耗为0.5 dB/point。光开关插入损耗为4.6 dB,平均串扰为-38 dB,平均偏振相关损耗为0.4 dB,开关平均功率为1.6 W,响应时间约为1 ms。实验结果与理论计算基本符合。
Based on the construction of the CROSSBAR network（CN） and the BANYAN network（BN）, a new rearrangeable nonblocking construction called extended BANYAN network （EBN） was proposed. Taking the 8×8 optical matrix switch for example, two types of EBN construction and their rearrangeable nonblocking characteristics were studied, and the drive logic of switching units was provided. A SiO2 waveguide 8 × 8 optical matrix switch was designed and fabricated according to the calculated insertion loss of 3.3 dB for 8 × 8 optical matrix swith. The SiO2 waveguide propagation loss of0.1 dB/cm and fiber-waveguide coupling loss of 0.5 dB/point were measured out. With the fabricated 8×8 optical matrix switch, optical insertion loss of 4. 6 dB, average cross-talk of --38 dB, average polarization dependent loss of 0.4 dB, averaged switching power of 1.6 W, and response time of 1 ms were achieved. The experiment results are concident with theoretical calculation well.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2007年第1期50-56,共7页
Optics and Precision Engineering
基金
中科院"百人计划"光通信器件研究项目资助
