----- Original Message ----- From: "Kevin Loch" <kl...@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


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