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By C-LIGHT Marketing丨Jan 8, 2026
QSFP28 100G ER4 optical module, with its compact design and robust 40km transmission capability, has emerged as a core component enabling high-performance network expansion.
By C-LIGHT Marketing丨Jan 7, 2026
100G QSFP28 ER4 40KM Transceiver is delivers 100G data transmission over 40km maximum distance via LAN-WDM technology at 1310nm wavelength.
By C-LIGHT Marketing丨Jan 6, 2026
‌QSFP28 100G ER4 Optical Transceiver‌ utilizes 1310nm wavelength laser technology to achieve ‌40km long-haul transmission‌ over single-mode fiber via ‌duplex LC connectors‌.
By C-LIGHT Marketing丨Jan 4, 2026
100G QSFP28 ER4 optical module is an optical transceiver solution designed for long-distance, high-performance data communication.
By C-LIGHT Marketing丨Dec 29, 2025
QSFP28 ER4 1310nm 100G 40km Optical Transceiver is a high-performance, long-reach solution for 100G networks. By leveraging 4x25G lanes, LAN-WDM multiplexing, and APD-based high-sensitivity receivers.
By C-LIGHT Marketing丨Dec 18, 2025
QSFP28 100G ER4 optical module becomes a critical component for achieving ultra-long-distance 40 km, 100 Gbps high-speed interconnection.
By C-LIGHT Marketing丨Dec 17, 2025
100G QSFP28 ER4 is a well-defined technical standard specifying the optical module requirements for achieving a 100 Gbps data rate over SMF with a transmission distance of up to 40 kilometers.
By C-LIGHT Marketing丨Sep 23, 2025
More notably, shipments of 800G optical transceivers are expected to achieve a year-on-year increase of 100% in 2025.

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