Re: Eye protection in DWDM systems -- what threshold?

[David Freedman <david.freedman () uk clara net>]

I forget who the vendor is now, but their shelves are sealed with a door
which, when opened, turns off all the lasers on the shelf so you can
work on it, yes, a simple provisioning operation causes an outage /
protection switchover!!

Dave.

Deepak Jain wrote:
> At what power level do DWDM systems become dangerous to work near (i.e. not staring into any optics, using light 
> meters, etc)? I never see technicians on inside DWDM systems using eye protection, but I see power levels of amps 
> going higher and higher. On a recent meter I saw almost .6mW... 
>
> Any pointers to a document saying 1550nm becomes dangerous at xxxx dbM?
>
> Thanks in advance,
>
> DJ