<p>➀ The article discusses the use of analog equalizer ICs in 50G PON systems, comparing them to traditional DSPs, and highlights their potential power, cost, and size advantages.</p><p>➁ Huawei and Orange have evaluated the performance of a new analog equalizer IC for 50G-PON applications, achieving a 33dB link budget.</p><p>➂ The article also covers the implementation of a 50G-PON downstream (DS) link analog ONU Rx side equalizer ASP-IC and a 25G burst mode (BM) upstream (US) Tx driver.</p>