Bandwidth improvement for germanium photodetector using wire bonding technology

作者：Guanyu Chen, Yu Yu, Shupeng Deng, Lei Liu, Xinliang Zhang · 发表于：Optics Express · 年份：2015 · DOI：10.1364/oe.23.025700 · 被引用次数：40 · 研究领域：Photonic and Optical Devices、Molecular Junctions and Nanostructures、Nanowire Synthesis and Applications

We demonstrate an ultrahigh speed germanium photodetector by introducing gold wires into the discrete ground electrodes with standard wire bonding technology. To engineer the parasitic parameter, the physical dimension of the gold wire used for wire bonding is specially designed with an inductance of about 450 pH. Simulation and experimental results show that the bandwidth of the photodetector can be effectively extended from less than 30 GHz to over 60 GHz.