On Thu, Oct 31, 2013 at 7:24 PM, Matthew Petach <mpetach@netflight.com>wrote:
On Thu, Oct 31, 2013 at 7:02 AM, Ray Soucy <rps@maine.edu> wrote:
Was the unplanned L3 DF maintenance that took place on Tuesday a frantic removal of taps? :-)
No need for intrusive techniques such as direct taps:
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=1494884
For shame.... you've sent in a link to some article behind a paywall, with some insane download fee. Which is an equivalent of hand-waving. They must be hiding their content, for fear that flaws be pointed out. "Of all the techniques, the bent fiber tap is the most easily deployed with
minimal risk of damage or detection. The paper quantifies the bend loss required to tap a signal propagating in a single mode fiber"
There will be some wavelengths of light, that may be on the cable, that bending won't get a useful signal from. Bending the cable sufficiently to break the total internal reflection property, and allow light to leak -- will generate power losses in the cable, that can be identified on an OTDR.
Matt
-- -JH