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OTN G.709 Framing: OTU, ODU and OTUCn Transport Layers

OTN G.709 Framing: OTU, ODU and OTUCn Transport Layers

Understand OTN G.709 framing: OTU and ODU layers, OPU payload mapping, FEC overhead and how OTUCn scales transport past 100G.

admin admin 2026-10-09
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DWDM System Components: MUX, EDFA and DEMUX Explained

DWDM System Components: MUX, EDFA and DEMUX Explained

Learn DWDM building blocks: transponders, MUX/DEMUX and ROADM filters, singlemode fiber, EDFA and Raman amplifiers, ASE and OSNR reach limits.

admin admin 2026-09-08
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CWDM vs DWDM: Which Wavelength Technology to Choose?

CWDM vs DWDM: Which Wavelength Technology to Choose?

CWDM vs DWDM explained: channel spacing, water-peak reach, cost, channel plans, power budgeting and the migration path between the two technologies.

admin admin 2026-09-02
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Common OTN Alarms and How to Troubleshoot Them

Common OTN Alarms and How to Troubleshoot Them

OTN alarms explained: anomaly, defect and failure hierarchy, LOS, LOM, OOF, BDI and FEC-EXC root causes, plus a layer-by-layer diagnostic workflow.

admin admin 2026-08-24
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