Our 200G QSFP56 portfolio consists of transceivers which can operate over Single-Mode Fiber (SMF) or Multi-Mode Fiber (MMF), can be used for connection distances from a couple of meters up to 2 kilometers and can support up to 212. 5 Gbps data rate, thus 200G Ethernet. Transimpedance amplifiers (TIAs) are one of the unsung heroes of the cloud and AI era. At the recent OFC 2025 event in San Francisco, exhibitors demonstrated the latest progress on 1. 6T optical modules featuring Marvell 200G TIAs. Recognized by multiple hyperscalers for its superior performance. At OFC 2023, Broadcom and our ecosystem partners demonstrated a 200G per lane (200G/lane) optical transmission link based on Broadcom's 200G DSP SerDes and laser technology. The demo not only validated the feasibility of 200G/lane optical links for data center networking, but also reassured the. A 200G optical transceiver is a pluggable device designed to transmit and receive 200 Gigabits per second over either fiber or copper links. These transceivers commonly use multi-lane architectures, combining eight electrical channels operating at 25Gbps each (NRZ), or four channels at 50Gbps. This paper is an extended version of our conference paper “200Gb/s PAM4 oxide VCSEL development progress at Broadcom,” presented at the Vertical-Cavity Surface-Emitting Lasers XXIX, 1138402 (2025), San Francisco, CA, USA, 29–30 January 2025.
