[115134] in North American Network Operators' Group
Re: Eye protection in DWDM systems -- what threshold?
daemon@ATHENA.MIT.EDU (Michael Painter)
Tue Jun 9 19:47:40 2009
From: "Michael Painter" <tvhawaii@shaka.com>
To: "Kevin Loch" <kloch@kl.net>
Date: Tue, 9 Jun 2009 13:46:33 -1000
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
----- Original Message -----
From: "Kevin Loch" <kloch@kl.net>
Cc: <nanog@nanog.org>
Sent: Tuesday, June 09, 2009 12:17 PM
Subject: Re: Eye protection in DWDM systems -- what threshold?
> In a pinch the camera on a MacBook pro can be used to detect
> presence of IR light. Here's light from a 10Gbase-LR xenpak:
>
> http://www.majhost.com/gallery/kl/Macbook/macbook-laser-camera.jpg
>
> It's easier to see when previewing in real time than
> in the static picture but it does require careful aim.
>
> - Kevin
Most 'cell phone' cameras also detect IR. Handy to verify that A/V equipment "Remotes" are working.
--Michael
