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

What Is the Role of Optical Transceivers in AI Data Centers

By C-LIGHT Marketing 丨 Oct 12, 2026

Optical transceivers connect AI servers and switches through high-speed fiber, enabling 400G and 800G bandwidth, scalable networks, and reliable data transfer.

How 800G Optical Transceivers Support AI GPU Clusters

By C-LIGHT Marketing 丨 Oct 11, 2026

800G optical transceivers connect AI GPU clusters with high-bandwidth links, supporting scalable fabrics, faster data exchange, and efficient inter-switch communication.

Why Circulators Cannot Replace 100G/40G BiDi Optics for Single-Fiber Bidirectional Transmission with Duplex QSFP28/QSFP+ Transceivers

By C-LIGHT Marketing 丨 Oct 10, 2026

Circulators separate directions but not wavelengths. Duplex transceivers use the same wavelength for transmit

How AI Workloads Are Changing Data Center Networking

By C-LIGHT Marketing 丨 Oct 9, 2026

AI training and inference are reshaping data center networks from top to bottom. Explore how east-west traffic, rail-optimized topologies, RoCE vs InfiniBand, elephant flows, optical interconnects, and the Ultra Ethernet Consortium are redefining network design for the AI era.

What Is BER Testing?

By C-LIGHT Marketing 丨 Oct 8, 2026

BER testing measures the bit error rate of a digital link. Learn how BERT works, pre-FEC vs post-FEC BER, eye diagrams, bathtub curves, PAM4 BER challenges, and BER targets for 400G, 800G, and 1.6T optical interconnects.

When to Use AEC Cables

By C-LIGHT Marketing 丨 Oct 7, 2026

AEC cables bridge the gap between copper DAC and optical AOC. Learn when to use Active Electrical Cables, how Retimer-based signal conditioning extends copper reach, and how AEC compares to DAC, ACC, and AOC at 400G, 800G, and 1.6T.

When to Use AOC Cables

By C-LIGHT Marketing 丨 Oct 6, 2026

AOC cables bridge the gap between copper DAC and discrete optical modules. Learn when to use active optical cables for 3-100m links, how AOC compares to DAC, AEC, and optics, and how reach evolves at 400G, 800G, and 1.6T.

When to Use DAC Cables

By C-LIGHT Marketing 丨 Oct 5, 2026

DAC cables remain the lowest-cost, lowest-latency interconnect for short-reach data center links. Learn when passive or active DAC beats AOC, AEC, and optics, and how reach shrinks at 400G, 800G, and 1.6T.

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