In Ethernet and optical communication applications, SGMII is widely used for connecting MAC and PHY layers. Many engineers ask: What is SGMII? What is an SGMII optical transceiver? How does SGMII module convert Gigabit to 100M? This article will fully explain SGMII basics, features, types, chip solutions, and application scenarios to help you select the right SGMII optical module.

The SGMII optical transceiver is a special 1.25G SFP optical module that supports the SGMII protocol. It realizes rate adaptation and photoelectric conversion between Gigabit Ethernet and 100M Fast Ethernet, widely used in equipment interconnection, network upgrading, and converged transmission scenarios.

II. What Special Functions Does SGMII Transceiver Have?

It’s special function is that Gigabit rate can be converted into 100M, and then carries on the high-speed serial signal transmission.

This auto‑sensing and rate conversion function allows SGMII modules to work with both Gigabit (1000M) and 100M devices, greatly improving compatibility and simplifying network deployment without replacing equipment or rewiring.

2) MM: 2KM

DDM (Digital Diagnostic Monitoring) supports real‑time monitoring of temperature, voltage, Tx/Rx power, and current, making operation and maintenance easier and more intelligent.

III. What Chip Solutions Are Used in SGMII Modules?

Our company provides SGMII optical transceiver with two kinds of chip solutions:

2. Broadcom, is the world's leading cable and wireless communications semiconductor company.

These two high‑performance chip solutions ensure stable rate conversion, low latency, high compatibility, and long‑term reliability, supporting mainstream switches, equipment, and embedded systems.

ETU‑LINK SGMII optical transceivers are fully compliant with SFP MSA, SGMII protocol, and IEEE standards. They support hot‑plugging, wide temperature, and long‑life design, suitable for industrial communication, enterprise networks, security monitoring, and broadband access.

Last updated: May 13, 2026