Optical Communication Knowledge Center丨C-LIGHT

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.

What is CWDM in Optical Fiber Communication?

By C-LIGHT Marketing 丨 Dec 15, 2025

CWDM stands for Coarse Wavelength Division Multiplexing. It is an optical technology that multiplexes multiple optical signals of different wavelengths onto a single fiber for transmission.

What is Passive CWDM?

By C-LIGHT Marketing 丨 Dec 1, 2025

Passive CWDM is a technology that allows multiple different data signals to be sent simultaneously over a single optical fiber by using different colors (wavelengths) of light.

OpenAI and Foxconn Form Strategic Partnership

By C-LIGHT Marketing 丨 Nov 24, 2025

On November 21, 2025, OpenAI, a leader in the field of artificial intelligence, announced a strategic partnership with Foxconn, the world's largest electronics manufacturing services provider.

What is the BIDI SFP module Why choose to use BiDi SFP

By C-LIGHT Marketing 丨 Oct 9, 2024

What is the BIDI SFP module Why choose to use BiDi SFP

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