Eye protection in DWDM systems -- what threshold?

Mikael Abrahamsson swmike at swm.pp.se
Tue Jun 9 01:27:38 CDT 2009


On Tue, 9 Jun 2009, Kevin Hodle wrote:

> Hi Deepak,
>
>   Most modern DWDM transponders with 160km network side optics will
> be launching anywhere from -2dBm to +2dBm depending on how warm the
> laser is, assuming a +2 dBm launch you are looking at around 1.6mW -

It might be good to note that there are ZX GBICs (120km variants) that are 
launching at +2 to +5, so you don't really need a DWDM system to achieve 
these levels. Care not to expose eyes to this light should be taken 
whenever handling optics of any kind.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se




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