n级阶梯倍增器中Capasso超额噪声因子公式错误的数学证明
信号处理
2025-06-12 v1 概率论
应用物理
仪器与探测器
摘要
固态器件如多级阶梯式雪崩光电二极管(APD)是光电倍增管的类比器件，被视为级联放大器。这些APD中内部噪声的主要来源来自其阶梯式碰撞电离的随机性。Campbell等研究组关于阶梯APD的近期文献报道了使用Capasso超额噪声因子公式对总超额噪声因子的理论估计。该公式基于Friis的级联网络总噪声因子公式。本文证明了Capasso公式在阶梯APD中的应用错误地将Friis总噪声因子公式中的功率增益视为增益。
引用
@article{arxiv.2506.09649,
title = {Mathematical proof of errors in Capasso's excess noise factor formula for an n-step staircase multiplier},
author = {Ankitha E Bangera},
journal= {arXiv preprint arXiv:2506.09649},
year = {2025}
}
备注
Recent research articles that have used Capasso's formula have been published in famous research journals, which include 'Nature Photonics (2021)' and 'Optics (2023).' It is important that the research community is aware that Capasso's formula and its equivalent forms are incorrect. This article points out the errors in the formulas (5 pages, No figures, preprint is under submission)