This technical documentation explains how to read and interpret an optical transceiver datasheet, with a practical focus on commonly used SFP module datasheet covering both 1G (1000BASE-SX / 1000BASE-LX) and 10G (10GBASE-SR / 10GBASE-LR) optical transceivers. Optical transceivers are the fundamental building blocks of modern fiber-optic communication systems. They enable the conversion between electrical and optical signals, allowing high-speed data transmission across switches, routers, servers, and other network equipment. with the following QSFP-DD, 400G transceiver modules. OPT-0046-xx, Platform usage VELOS (Monaco BX520 Blade). The high bandwidth module supports dual 800G Ethernet or InfiniBand connections, or a single 1.