【摘要】 为了实现波导矩阵光开关一对多、多对多的通信方式,设计了一种新型的多路可用波导矩阵光开关。在分析马赫-曾德尔干涉仪(MZI)基本结构的基础上,定义了两种开关形式。以二者作为结构单元,设计了2×2、4×4矩阵光开关结构以实现1∶k(k>1)多路连接的功能。分析了Banyan网络中交叉连接损耗与交叉角度的关系,对MZI结构进行了性能模拟和优化,并由此对整个开关的插入损耗进行了分析。最后,基于PLC技术制作出相应的MZI开关单元及2×2、4×4波导SiO2光开关实物。测试结果表明,2×2光开关的插入损耗为2.25 dB,4×4光开关的插入损耗为4.3 dB,开关时间均<1 ms,该类光开关能够很好地实现多路开关的功能。更多还原

【Abstract】 In order to realize one-to-many and many-to-many communications for optical waveguide matrix switch,a new type of optical waveguide matrix switch was designed.Two switch units were defined on analysis of the basic structure of Mach-Zehnder Interferometer(MZI).Then,based on this two units,the new structures of 2×2 and 4×4 optical matrix switches were proposed to realize the multiport interconnection of 1∶k(k>1). The influences of the intersection angles among waveguide links on the intersection-induced optical loss of system were studied in Banyan network and the total insertion losses of system were discussed after the performance simulation and the optimization of MZI construction.Finally, SiO2-based MZI units,2×2 and 4×4 optical matrix switches were fabricated based on Planar Lightwave Circuit(PLC) technology.The experimental results indicate that the insertion losses of 2×2 optical matrix switch and 4×4 optical matrix switch are 2.25 dB and 4.3 dB,respectively,and the response time is less than 1 ms.It concludes that this type of optical switch can primely fulfill the multiport switch function.更多还原