A 10G link over OS2 fiber works fine for weeks, then drops out randomly on hot days. The OTDR trace looks normal when tested in the morning. An inspection of the splice enclosure on the roof shows the splice trays are crammed full of slack loops. What is the diagnosis?
Answers
AThe laser is overheating and changing wavelength
BThermal expansion of the cable jacket is pushing fiber into the trays, causing macrobends as it tightens against the tray walls
CUV light is penetrating the jacket and blinding the receiver
DThe index matching gel in the fusion splice is melting
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