[115111] in North American Network Operators' Group
Re: Eye protection in DWDM systems -- what threshold?
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Tue Jun 9 02:27:50 2009
Date: Tue, 9 Jun 2009 08:27:38 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Kevin Hodle <kevin.hodle@gmail.com>
In-Reply-To: <9639597a0906082316m3068d20bk421c5887b4347ac1@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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@swm.pp.se
