3 mm Microduct System for FTTH Networks in MDUs

摘要

When installing fiber to the home (FTTH) in Multi Dwelling Units, the challenge is to reach all apartments in the most convenient and cost effective way. Traditional drop cable solutions have several drawbacks such as high installation cost due to extensive fiber splicing. Air Blown Fiber (ABF) technologies using 5mm micro ducts where fiber is blown-in, offers splice-free installation at low cost, but also present problems with large cross sections in narrow risers. This article presents results from practical and theoretical studies regarding 3mm ducts for air blown fiber installations in indoor environments. 3mm duct assemblies have been manufactured and tested in lab environment and at customer field trials. The results show that a 3mm duct system is an excellent option for indoor installations and offers huge benefits. The tiny 3mm duct system combines the benefits of low-cost splice free installation of air-blown fiber with slim size, suitable for installation in narrow risers.