[time-nuts] time-nuts Digest, Vol 103, Issue 14

Dan Kemppainen dan at irtelemetrics.com
Tue Feb 5 08:42:59 EST 2013

Juts an FYI. I thought fiber was lightning proof also. As it turns out 
the fiber used by phone companies has copper tracers in it for 
location purposes (Without metal it's hard to find where it's buried). 
This in turn causes lightning strikes to cut fiber fairly often. I 
wouldn't have though about it, but a friend of the family is in charge 
of laying and repairing fiber for phone companies straightened me out 
on fiber.

There is however, usually a lot of extra fibers. At this point in time 
the cost to lay anything in the ground is much more expensive than the 
cost of big bundles. Sounds like a lot of extra fiber goes in the 
ground just so they don't have to lay more later...


On 2/4/2013 6:35 PM, time-nuts-request at febo.com wrote:
> Consider that cost to manufacture the cable goes up as you put stuff in it. You not only need sensor packages, you also need to connect them so they can report data. Unless the sensors are optically powered and linked, they would compromise the inherent lighting immunity the fiber provides.

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