Two-photon-absorption photodiodes in Si photonic-crystal slow-light waveguides
Two-photon-absorption photodiodes in Si photonic-crystal slow-light waveguides
复制标题
硅光子晶体慢光波导中的双光子吸收光电二极管
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
T. Baba
中科院分区：
文献类型：
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作者：
R. Hayakawa;N. Ishikura;H. Nguyen;T. Baba
我们展示了在硅光子晶体波导中的双光子吸收光电二极管，它表现出宽带低色散慢光。该器件是在SOI衬底上采用与CMOS兼容的工艺制作的。对于波长在1550 nm左右、宽度为2.7ps、峰值功率为亚瓦的脉冲，响应性得到了更高的组指数慢光，最高可达0.052 A/W。我们将该器件应用于光学相关器和色散探测器。在前者中，观测到了0.7−10ps脉冲的相关波形，误差很小。在后者中，检测到与脉冲宽度成反比的光电流。
We demonstrate two-photon-absorption photodiodes in Si photonic-crystal waveguides, which shows wideband low-dispersion slow light. The device was fabricated on SOI substrate by CMOS-compatible process. The responsivity was improved by higher group indexes of slow light up to 0.052 A/W for pulses at wavelengths around 1550 nm with a 2.7 ps width and sub-watt peak powers. We applied this device to an optical correlator and dispersion detector. In the former, the correlation waveforms of 0.7−10 ps pulses were observed with small errors. In the latter, photocurrents inversely proportional to the pulse width were detected.