Optical Communication Knowledge Center | Optical Transceiver Technology Guide丨C-LIGHT

How to Properly Select a 10G Copper SFP+ Module?

By C-LIGHT Marketing 丨 Jan 19, 2026

In 10-gigabit network deployments, the 10G copper SFP+ module has become a mainstream choice for short-distance transmission due to its cost-effectiveness

What is the difference between QSFP and QSFP28?

By C-LIGHT Marketing 丨 Jan 12, 2026

QSFP and QSFP28 are both transceivers used in data centers and networks, but they differ mainly in speed and intended application.

What is the Relationship Between AI and Optical Modules

By C-LIGHT Marketing 丨 Jan 11, 2026

The relationship between artificial intelligence (AI) and optical modules is one of mutual acceleration and fundamental dependence.

What is a Fiber Trunk Cable?

By C-LIGHT Marketing 丨 Jan 10, 2026

A fiber trunk cable is a high-capacity, pre-terminated fiber optic cable assembly designed to carry multiple data channels simultaneously between key infrastructure points within a network.

How to Choose a QSFP28 100G ER4

By C-LIGHT Marketing 丨 Jan 9, 2026

QSFP28 100G ER4 stands out for its ultra-long transmission distance of 40 kilometers, making it an ideal choice for connecting campus networks, metropolitan area networks, and critical data center nodes

What is DWDM Networking

By C-LIGHT Marketing 丨 Jan 1, 2026

The answer lies in DWDM (Dense Wavelength Division Multiplexing), a foundational technology that has quietly revolutionized how the world stays connected

What is QSFP28 100G ER4 1310nm

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.

What is 10G COPPER

By C-LIGHT Marketing 丨 Dec 16, 2025

10G COPPER is a technology that enables 10Gbps data transmission rates over twisted-pair copper cabling.

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