CAJ | 학술논문

为了消除单节电极定向耦合电光开关的工艺误差对器件性能的不良影响,应用耦合模理论、电光调制理论、保角变换及镜像法,优化设计了一种两节交替反相电极聚合物定向耦合电光开关.模拟结果表明,该器件具有良好的开关性能:在1 550 nm的工作波长下,器件耦合区的长度为4 753.5 μm,交叉态电压为1.22 V,直通态电压为2.65 V,插入损耗小于2.21 dB,串扰小于-30 dB.通过微调状态电压,可以很容易地消除工艺误差对器件性能产生的不良影响.本文方法的设计结果与光束传播法的仿真结果符合得很好.
위료소제단절전겁정향우합전광개관적공예오차대기건성능적불량영향,응용우합모이론、전광조제이론、보각변환급경상법,우화설계료일충량절교체반상전겁취합물정향우합전광개관.모의결과표명,해기건구유량호적개관성능:재1 550 nm적공작파장하,기건우합구적장도위4 753.5 μm,교차태전압위1.22 V,직통태전압위2.65 V,삽입손모소우2.21 dB,천우소우-30 dB.통과미조상태전압,가이흔용역지소제공예오차대기건성능산생적불량영향.본문방법적설계결과여광속전파법적방진결과부합득흔호.
To eliminate the negative effect of the fabrication error on the performance for the directional coupler electro-optic switch with single-section electrode,the structure is designed,the parameters are optimized,and the characteristics are analyzed for a polymer directional coupler electro-optic switch with two-section reversed electrodes by using the coupled mode theory,electro-optic modulation theory,conformal transforming method and image method.Simulation shows that the designed device exhibits excellent switching functions.Under the operation wavelength of 1 550 nm,the coupling region length is 4 753.5 μm,the cross-state and bar-state voltages are about 1.22 V and 2.65 V,and the insertion loss and crosstalk are less than 2.21 dB and -30 dB,respectively.By slightly adjusting the state voltages,the blight of the fabrication errors on the switching characteristics can be easily eliminated.The calculation results of the presented technique are in good agreement with those of the beam propagation method (BPM).