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
