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High-power high-frequency traveling-wave heterojunction phototransistors with integrated polyimide waveguide

机译:集成聚酰亚胺波导的高功率高频行波异质结光电晶体管

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A high-power high-speed phototransistor has been demonstrated using a traveling-wave (TW) structure with an integrated polyimide optical waveguide. In our configuration, optical power transfer is distributed along the length of the device via leaky mode coupling of light from the polyimide waveguide to the active region of the phototransistor. The TW electrode design allows for an electrically long structure while maintaining high bandwidths. Due to the increased absorption volume, the optical power handling capabilities of the TW-heterojunction phototransistors (TW-HPT's) are improved over that of conventional lumped-element HPT detectors. The experimental results show no saturation of the fundamental at 60 GHz up to 50 mA of DC photocurrent.
机译:已经证明使用具有集成聚酰亚胺光波导的行波(TW)结构的高功率高速光电晶体管。在我们的配置中,光功率传输是通过光从聚酰亚胺波导到光电晶体管有源区的泄漏模式耦合沿着设备的长度分布的。 TW电极设计允许在保持高带宽的同时实现电气结构的长化。由于吸收体积的增加,TW-异质结光电晶体管(TW-HPT's)的光功率处理能力比传统的集总元件HPT检测器有所提高。实验结果表明,在高达60 mA的直流光电流下,60 GHz时基波没有饱和。

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