Optical Communications
From fiber optic fundamentals to FTTx and PON networks, splicing, testing, deployment, and maintenance. Technical documents and practical resources for optical communications, all in one place.
5 of 5 articles
2026-09-12
Dome vs. Inline Fiber Optic Closures: Site Conditions First
Which closure suits your site? Compare cable entry directions and working space, future branching and expansion, and maintenance access and resealing before choosing a dome or inline fiber optic closure.
2026-09-27
Before the Loss Number: Making a Fiber Test Result Trustworthy
A field guide to the questions that come before pass or fail: what OLTS and OTDR each measure, how connectors and launch fibers change the result, and which details to save for the next engineer.
2026-09-30
First Sealing Is Not the Finish Line: Keeping a Splice Closure Watertight at Re-entry
A splice closure is tested harder when it is reopened than when it is first sealed. This guide turns manufacturer installation procedures and field guidance into a re-entry checklist for staying watertight.
2026-10-02
Adding Trays Does Not Turn a 144-Fiber Closure into a 288-Fiber Closure
A closure's rated capacity looks like trays times splices per tray. Manufacturer documents attach conditions to that number. Here are four things to check when scaling from 144 to 288 fibers.
2026-10-20
Before You Memorize the 12 Fiber Colors
The memory that blue is fiber 1 is right for some cables and wrong for others. This guide uses public documents to compare color schemes such as TIA-598, DIN-0888 and S12 and lists five checks before splicing.