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

There are erbium doped raman lasers with output of up to 10 watts continuous wave, they are (obviously) class 4 devices and are considered hazardous. 3r and 3b emitters shouldn't be directly exposed to the eye, and carry an appropriate warnings. the 10-80km stuff should all be 1 or 1m and does't merit the yellow triangle. 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