单载流子输运光电探测器，具有高对比度光栅聚焦反射镜
Uni-traveling-carrier photodetector with high-contrast grating focusing-reflection mirrors
AI总结：
提出集成非周期同心圆高对比度光栅聚焦反射镜的UTC-PD，在1.55微米波长下响应度提高36.5%，带宽保持18 GHz，射频输出功率-1.77 dBm。
摘要：
提出了一种新型单载流子输运光电探测器（UTC-PD）结构，该结构集成了由非周期同心圆高对比度光栅（NP-CC-HCG）实现的聚焦反射（FR）镜，称为FR-UTC-PD，旨在提高传统UTC-PD的响应度。与未集成FR镜的UTC-PD相比，FR-UTC-PD在1.55微米波长下的响应度提高了36.5%，反射率为84.59%。对于直径为40微米的PD，在-3.0 V偏压下，获得的3-dB带宽保持不变，为18 GHz。在10 GHz和-6.0 V偏压下，射频（RF）输出功率和光电流分别为-1.77 dBm和17.56 mA。
英文摘要：
A novel uni-traveling-carrier photodetector (UTC-PD) structure with an integrated focusing-reflection (FR) mirror realized by a non-periodic concentric circular high-contrast grating (NP-CC-HCG), referred to as FR-UTC-PD, is proposed to enhance responsivity in conventional UTC-PDs. The FR-UTC-PD allows improving the responsivity by 36.5% at a 1.55-um wavelength as compared to a UTC-PD without integrated an FR mirror with 84.59% reflectivity. For 40-um-diameter PDs, the obtained 3-dB bandwidths are unaltered with values of 18 GHz at -3.0 V bias voltage. The radio-frequency (RF) output power and photocurrent are -1.77 dBm and 17.56 mA, respectively, at 10 GHz and the -6.0 V bias voltage.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
