Blogs

Learn all fiber optic connector types: LC, SC, ST, FC, MPO/MTP plus PC/UPC/APC end faces. Compare specs, selection tips, and maintenance guides from COBTEL.

Learn what a fiber optic loopback adapter is, the types available (duplex and MPO), polarity methods (A, B, C), and how to run a hard loopback test step by step.

Learn the key differences between APC vs UPC vs PC fiber connectors: end-face shape, return loss, polishing types, compatibility rules, and how to choose the right one.

What is MPO cable? Learn how it works, why 800G/1.6T demand is surging, and how to select the right fiber count, polarity, and OM grade for your project.

Learn the three mainstream 800V DC/DC power supply schemes for AI data center server racks. Compare 800V-to-50V, 800V-to-12V, and 48V VRM architectures.

Learn different fiber optic transceiver types from SFP to QSFP-DD800 from 1G to 800G. Covers specs, signaling tech (NRZ/PAM4), a full comparison table, and a 4-factor selection guide.

Compare QSFP-DD vs OSFP form factors for 400G/800G deployments. Covers specs, backward compatibility, migration paths, TCO, deployment steps, and troubleshooting.

Learn all 4 MTP cable types: trunk, harness, jumper, and conversion. Effortlessly spec the perfect fiber for your 40G to 400G setup.

Choosing cables for your AI data center? Compare DAC vs AOC vs AEC vs ACC effortlessly. Get the right cable and avoid costly mistakes.

Not all 400G QSFP-DD transceivers work with your existing fiber. Compare SR8,DR4,FR4,and LR4 on reach,connectors,breakout support, and cost so you order the right optical transceivers the first time.

Stop guessing MPO MTP Fiber Connector types. Effortlessly match the right fiber count and polarity for 40G to 800G — no costly rewiring.

Stop guessing which fiber fits your network. Effortlessly pick the right cable with our clear, proven single mode fiber vs multimode fiber breakdown.