September 23, 2025, Shenzhen, China. – GIGALIGHT will showcase a live demonstration of its latest 400G QSFP-DD ER4-30km optical module at the European Conference on Optical Communication (ECOC) 2025. Designed with narrow LAN-WDM wavelengths, the module provides data center customers and 5G network operators with a cost-effective, long-reach end-to-end transmission solution.

Application Scenarios:

Key Product Highlights：

• Supports dual-fiber transmission up to 30km
• Average launch power of up to +3dBm per lane
• TDECQ as low as 2.28dB
• Receiver OMA sensitivity better than –12.5dBm per lane
• Power consumption below 13W

Transmitter Eye Diagram:

Proven Transmission Performance :

• The module successfully achieved 30km dual-fiber transmission with KP4 FEC, completing a 24-hour loopback test on 400GE traffic generators with zero packet loss.
• Demonstrations confirmed its low power consumption (<13W) and exceptional receiver sensitivity (better than –12.5dBm per lane).

The module leverages APD receiver technology and low-dispersion wavelength emission to ensure stable, reliable, and high-speed transmission across long-distance links in diverse application scenarios. Consistent with GIGALIGHT’s 400G FR4 and LR4 products, it adopts a semi-hermetic laser packaging design that further enhances long-term reliability.

Visit GIGALIGHT at Booth C1321 to explore the company’s latest innovations in optical interconnect technology and experience the 400G QSFP-DD ER4-30km module in action.

About GIGALIGHT

As an open optical networking explorer, GIGALIGHT integrates the design, manufacturing, and sales of both active and passive optical devices and subsystems. The company’s product portfolio includes optical modules, silicon photonics modules, liquid-cooled modules, passive optical components, active optical cables, direct attach copper cables, coherent optical communication modules, and OPEN DCI BOX subsystems. GIGALIGHT focuses on serving applications such as data centers, 5G transport networks, metropolitan WDM transmission, ultra-HD broadcast and video, and more. It stands as an innovative designer of high-speed optical interconnect hardware solutions.