Angled Polish Connectors and DWDM

Mikael Abrahamsson swmike at
Sun Sep 30 09:59:17 UTC 2012

On Sun, 30 Sep 2012, Igor Ybema wrote:

> To my knowledge APC is always better than PC connectors. APC are used to 
> eliminate back reflections. Due to the angled connector reflections are 
> sent mostly towards the cladding and not the core and therefore.

I've been told this is very important in HFC solutions (hybrid fibre 

Operationally though, having APC is a hassle. I know of companies who 
mandated APC for a few years for all installations, but then reverted back 
to UPC due to operational problems (people putting UPC cables into APC 
ODFs etc).

So while APC might be technically superior when properly installed, it's 
not always better when looking at the whole "system".

Mikael Abrahamsson    email: swmike at

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