FIBERSTAMP Unveils Narrow-Grid LAN-WDM 400G QSFP-DD ER4-30km for Metro Ethernet

CHANGI, Singapore - Oct. 24, 2025 - PRLog -- FIBERSTAMP has announced the launch of its 400G QSFP-DD ER4-30km optical module, built on narrow-grid LAN-WDM wavelengths. Designed for medium to long-reach Metro Ethernet networks, the module delivers exceptional bandwidth, low power consumption, and stable performance over distances up to 30 km—addressing the growing demand for high-speed interconnects in next-generation 400G deployments.

The 400G QSFP-DD ER4-30km adopts 4×100G PAM4 modulation and operates across the 1295.56 nm–1309.14 nm LAN-WDM band with a dual-fiber LC interface, supporting transmission distances up to 30 km. In lab testing, the module successfully completed a 24-hour error-free 400GE loopback with KP4 FEC, confirming its superior link stability and reliability.

Key Performance Highlights

Average transmit power: +3 dBm per channel

TDECQ (Transmitter and Dispersion Eye Closure for PAM4): as low as 2.28 dB

Receiver sensitivity: better than –12.5 dBm per channel

Power consumption: <13 W

Versatile Application Scenarios

Data Center Interconnect (DCI): Enables direct 400G metro backbone connections, minimizing O-E-O conversions and enhancing transmission efficiency.

5G Fronthaul, Midhaul, and Backhaul: Supports long-reach, high-capacity transmission between AAU and DU under C-RAN architecture, accelerating large-scale 5G deployment.

Enterprise and Cloud Connectivity: Provides reliable, low-latency private links for finance, government, and cloud applications, empowering digital transformation.

With the launch of this new product, FIBERSTAMP strengthens its leadership in open optical interconnect innovation. Guided by its principles of openness, innovation, and differentiation, the company remains committed to delivering high-performance, energy-efficient, and cost-optimized optical connectivity solutions—driving the data communication industry toward a faster, smarter, and greener future.

Learn more about FIBERSTAMP: https://www.fiberstamp.com/