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OALib Journal期刊
ISSN: 2333-9721
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A high-efficiency high-power evanescently coupled UTC-photodiode
一种高效高功率倏逝波耦合型光电探测器的研究

Keywords: EC-UTC-PD,multimode diluted waveguide,space-charge effect,thermal effect
倏逝波耦合型单一载流子光电探测器
,多模稀释波导,空间电荷效应,热效应

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Abstract:

The effects of the multimode diluted waveguide on quantum efficiency and saturation behavior of the evanescently coupled uni-traveling carrier (UTC) photodiode structures are reported. Two kinds of evanescently coupled uni-traveling carrier photodiodes (EC-UTC-PD) were designed and characterized: one is a conventional EC-UTC-PD structure with a multimode diluted waveguide integrated with a UTC-PD; and the other is a compact EC-UTC-PD structure which fused the multimode diluted waveguide and the UTC-PD structure together. The effect of the absorption behavior of the photodiodes on the efficiency and saturation characteristics of the EC-UTC-PDs is analyzed using 3-D beam propagation method, and the results indicate that both the responsivity and saturation power of the compact EC-UTC-PD structures can be further improved by incorporating an optimized compact multimode diluted waveguide.

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