低串扰Y分叉1×2热光型数字光开关  

Low Crosstalk Y-branch 1×2 Thermo-Optic Digital Optical Switch

作　　者：张昊[1] 江晓清[1] 杨建义[1] 李锡华[1] 王明华[1] 

机构地区：[1]浙江大学信息工程与电子工程系,浙江杭州310027

出　　处：《光电子．激光》2005年第11期1274-1277,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60177012);浙江省重点科技计划(G20030190)

摘　　要：设计了一种基于聚合物材料热光效应的1×2数字光开关(DOS)新结构。该结构将Y分叉DOS与具有引导和可变光衰减(VOA)功能的S弯曲过渡波导集成,在不增加器件结构的基础上,可大大提高开关性能,并采用填埋尖角的方法改进设计Y分叉,增大了Y分叉角度的范围,降低了工艺难度。由光束传输法(BPM)模拟表明,对于波长为1.55μm、Y分叉角度α=0.3°和计算功耗为120 mW时,该结构可实现低于-40 dB的串扰,插入损耗小于0.5 dB,具有很好的极化独立性和波谱平坦性、良好的稳定性和可重复性以及易于集成等特点。We present a polymer Y-branching digital thermo-optic switch with which a variable optical attenuator is integrated. Without any structural extend of the device, it can realize low insertion loss and wide branching angle. By optimizing the design of Y-branching area,a wide-angle low loss Y-branch can be realized. With an applied electrical power of 120 mW, it has a low insertion loss of 0.5 dB and a low crosstalk of -40 dB at 1. 55μm. The polymer digital optical switch（DOS） is attractive in practice due to its compact size, low insertion loss and low power consumption. In addition, it shows good polarization independence and good stability.

关 键 词：集成光学 数字光开关(DOS) 可变光衰减器(VOA) 热光效应 S弯曲波导 

分 类 号：TN256[电子电信—物理电子学]