Your Fiber Is Dark: What You Can Actually Test
Fiber-to-the-home doesn't give you a modem to reboot — GPON is passive glass from the central office to your wall, which means when it dies, there's nothing blinking to diagnose. This episode walks through how GPON actually works: the OLT, the unpowered splitters, the 125-microsecond TDMA turns that 128 homes take on one strand, and why downstream is broadcast while upstream is a strictly scheduled conversation. Then it gets practical. PON power meters, why they measure 1310, 1490 and 1550 nanometers simultaneously without taking you offline, and why a GPON-only tester can read a next-gen…
The skinny
The skinny isn't ready yet — notes appear once the transcript is processed.