# How Passive Optical Networks (PON) Work

DevFeed: [How Passive Optical Networks (PON) Work](<https://devfeed.tech/articles/how-passive-optical-networks-pon-work-40154.md>)

Original publisher: [Read original article](<https://blog.j2sw.com/inetarch/how-passive-optical-networks-work/>)

Author: j2sw

Published: 2026-07-22T12:35:00Z

Content type: tutorial

Language: en

Sources: [Justin Wilson (j2sw)](<https://devfeed.tech/sources/justin-wilson-j2sw.md>)

Topics: [Networks](<https://devfeed.tech/topics/networks.md>), [gpon](<https://devfeed.tech/topics/gpon.md>), [Internet](<https://devfeed.tech/topics/internet.md>), [Ethernet](<https://devfeed.tech/topics/ethernet.md>), [gateway](<https://devfeed.tech/topics/gateway.md>), [Security](<https://devfeed.tech/topics/security.md>), [Deployment](<https://devfeed.tech/topics/deployment.md>)

Tags: [ethernet](<https://devfeed.tech/tags/ethernet.md>), [fiber](<https://devfeed.tech/tags/fiber.md>), [ftth](<https://devfeed.tech/tags/ftth.md>), [gateway](<https://devfeed.tech/tags/gateway.md>), [gpon](<https://devfeed.tech/tags/gpon.md>), [internet](<https://devfeed.tech/tags/internet.md>), [internet-architecture](<https://devfeed.tech/tags/internet-architecture.md>), [isp](<https://devfeed.tech/tags/isp.md>), [networks](<https://devfeed.tech/tags/networks.md>), [passive-optical-network](<https://devfeed.tech/tags/passive-optical-network.md>), [pon](<https://devfeed.tech/tags/pon.md>), [providers](<https://devfeed.tech/tags/providers.md>), [provisioning](<https://devfeed.tech/tags/provisioning.md>), [router](<https://devfeed.tech/tags/router.md>), [security](<https://devfeed.tech/tags/security.md>), [xgs-pon](<https://devfeed.tech/tags/xgs-pon.md>)

## AI overview

This tutorial explains how Passive Optical Networks (PON) deliver residential fiber Internet. It describes the roles of the OLT, passive optical splitters, ONTs, and the customer router or gateway, including how providers share feeder fiber among subscribers and provision authorized ONTs.

## Source excerpt

If you've spent any time looking into fiber Internet, you've probably run across terms like GPON, XGS-PON, OLT, and ONT. These are all parts of what's called a Passive Optical Network, or PON. Most residential fiber providers use PON because it lets them connect alot of homes without having to pull a separate fiber from ... Read more The post How Passive Optical Networks (PON) Work appeared first on Justin Wilson (j2sw).