Tech Theory: Teachnical & Practical & Interesting Fiber optical for network

CPO vs Pluggable Optics: What Changes for Procurement and Cabling?
CPO is real roadmap technology, but pluggable optics still dominate 2026-2028 deployments. Use this procurement checklist to understand what changes, what stays, and what to verify before you buy.

OM4 vs OM5 for 100G/400G Multimode — Which is Better?
With 100G now standard in enterprise data centers and 400G deployments accelerating, the multimode fiber upgrade question has sharpened: OM4 or OM5? This guide gives

OEM Fiber Optics vs Brand-Name: Why Smart Buyers Choose OEM
When your team needs to upgrade 500 switch ports or outfit a new data center cage, the choice between OEM-compatible transceivers and name-brand modules can

How to Calculate Fiber Link Budget for Data Center Networks
A fiber link budget calculation determines whether your optical link will work reliably before you pull a single cable. Done correctly, it prevents costly troubleshooting

QSFP-DD vs OSFP: Which to Choose for 800G AI Clusters?
As AI clusters scale past 800G, the transceiver form factor debate has sharpened to one question: QSFP-DD or OSFP? Both carry 800 Gbps. Both are

SFP, QSFP, QSFP-DD & OSFP Cages: Sizes, Heat Sinks & How to Choose (2026)
A buyer’s guide to pluggable cages: SFP to OSFP form factors, belly-to-belly stacking, heat sinks, press-fit vs solder, and TE/Molex/Amphenol cross-reference.