Enhancing Linearity of Light Response in Avalanche Photodiodes by Suppressing Electrode Size Effect
Hongyi Gan,
Junwen Yu,
Xiangfu Wang
Abstract:The nonlinear characteristics of avalanche photodiodes (APDs) inhibit their performance in high-speed communication systems, thereby limiting their widespread application as optical detectors. Existing theoretical models have not fully elucidated complex phenomena encountered in actual device structures. In this study, actual APD structures exhibiting lower linearity than their ideal counterparts were revealed. Simulation analysis and physical inference based on GaN APDs reveal that electrode size is a notewor… Show more
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