dB loss

Cabling-Design.com FREE cabling and networking Helpdesk
 Question by ric janetos posted 01 Jun 2007
 dB loss
Why does inside FO cable have more loss (1) dB/Km than outside plant cable (.5)dB/Km
 Answer by Dmitri Abaimov posted 09 Jun 2007
Dear Ric,

You might be looking at specifications of different kinds of fiber optic cables - singlemode for outside and 50 mkm multimode for the inside.

However, in reality the inside cable's attenuation is, in fact, higher due to higher number of bends the cable endures being laid out in a building, many a sharp bend. Every bend adds attenuation to the total loss budget.

Outside cables, on the other hand, are usually laid in straight paths and so the bend-induced attenuation is not such a big concern.

Dmitri Abaimov, RCDD

Click here to see the expert's profile
Back to the current page of questions | Back to all the questions
Back to Cabling-Design.com HELPDESK | Ask your question
Residential Cabling Guide

Home Cabling Guide

Finally, an instantly downloadable book that saves you thousands in home improvement dollars! Enjoy living in 21st century technology-advanced home while increasing its selling value and competitive advantage on the real estate market. Whether your cabling is for home office or high-tech leisure, you can wire your home yourself or learn "wirish" to speak with your cabling contractors in their language!

Learn more ...