光子学报, 2015, 44 (3): 0323001, 网络出版: 2015-04-14   

行波光电二极管级联阵列输出功率合成研究

Studying of Output Power Combining for Cascaded Travelling-wave Photodiode Arrays
作者单位
1 宁波大学 信息科学与工程学院, 浙江 宁波 315211
2 Intelligent Epitaxy Technology, 1250 E Collins Blvd, Richardson, TX 75081, USA
3 Atech Systems, 6110 W. Highway 290, Austin, TX 78735, USA
摘要
针对未来光载无线通信所需的高功率、大带宽的光电探测器, 提出了一种行波光电二极管级联阵列功率合成电路.先将行波光电二极管级联, 再按照阵列式结构将多组级联的光电二极管组合起来, 实现射频功率合成, 以获得高功率、大带宽的射频信号.采用EDA工具, 对该光电转换射频功率合成电路进行仿真模拟.仿真结果表明, 该功率合成电路可以有效地将各光电二极管的射频输出信号进行功率合成, 功率合成后的信号带宽显著增加, 仿真结果与理论分析完全一致.此外, 电路分析表明, 增加该功率合成电路中的高阻微带线的特性阻抗可以有效提高其输出射频信号的带宽.
Abstract
In order to fabricate the high-power high-bandwidth photodector for radio-over-fiber communication, a optical-to-electrical conversion circuit of cascaded traveling-wave detector arrays for power combining was proposed. Traveling-wave photodiodes were cascaded and connected with inductors based on the structure of traveling-wave detector arrays to obtain high-power high-bandwidth radio frequency signals. The optical-to-electrical conversion circuit was simulated with EDA tools. The simulation results show that the circuit combines the signals of the cascaded photodiodes effectively, which makes the bandwidth increase significantly. The results agree well with the theortetical analysis. In addition, circuits analysis indicates that the frequency bandwidth of the RF signal incereases effectively as the characteristic impendance increases.
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文化锋, 聂秋华, 刘太君, 徐铁峰, 应祥岳, CLARK Kevin, LI Ying-feng. 行波光电二极管级联阵列输出功率合成研究[J]. 光子学报, 2015, 44(3): 0323001. WEN Hua-feng, NIE Qiu-hua, LIU Tai-jun, XU Tie-feng, YING Xiang-yue, CLARK Kevin, LI Ying-feng. Studying of Output Power Combining for Cascaded Travelling-wave Photodiode Arrays[J]. ACTA PHOTONICA SINICA, 2015, 44(3): 0323001.

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