Splitting ottico passivo per ridundanza link#

Mirko Mosca

• Why: A physical-optics technique for link redundancy using passive splitters — cheap, unpowered redundancy directly in the PM's optics/cabling territory, and the kind of low-tech trick high-end roadmaps overlook.
• What: Using passive optical splitting to provide link redundancy. (title only)
• How: Presumably a splitter feeds two paths/receivers so a failure on one path does not drop the link; the design constraint to check is the splitter's insertion loss (roughly 3 dB per branch) eating into the loss budget.
• Where applicable: Short-reach/DCI links and cost- or power-constrained sites; loss-budget math limits reach, so it does not scale to long spans without amplification.