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Bent Fibers Put Networks At Risk
opticsorg writes "The combination of moderate optical powers and tight bends can prove catastrophic for optical fibers, according to research carried out by BT Exact in the UK. Although the effect is unlikely to cause problems in current networks, it means that designers may need to think carefully before scaling up the power in their systems or deploying Raman amplifiers with pump powers of several hundred milliwatts or more. In the July 10th issue of Electronics Letters, Ed Sikora and his colleagues report that powers as low as 500 mW can induce permanent damage in singlemode fiber that is bent (13 mm bend diameter or less). 'These bends could be found in exchange racks or splice trays, for example, especially if a fiber is tugged or pulled,' Sikora told Optics.org. The BT researchers carried out tests on four types of fiber subjected to a range of bend diameters (5 to 15 mm) and optical powers of up to a few watts. In all cases the fibers fail within 53 hours. 'What was unexpected was that the catastrophic failure can occur in 90 bends at fairly low powers of less than 1 W or so,' said Sikora. 'It's important to understand that we're not saying that networks are going to fall over tomorrow, but as powers go up you have to aware this effect could occur under certain circumstances.'"
Similarly, the bends can prove catastrophic for nautical divers.
The zero's can turn corners easily enough, but those ones get hung up in the corners.
You would not believe how many mice cords this effects yearly.
Life moves pretty fast; if you don't stop and look around once in a while, you could miss it. -FB
Scientists today showed that electrical conducting wires can fail when run through a bathtub and that your car won't run after going over a cliff.
The researchers were said to be "disappointed".
42 - So long and thanks for all the fish.
They should put some Pantene Pro-V on them fibers.
/me pulls fire alarm.
It works for me!
No, wait . . . ok, well, at least that stuff isn't flammable.
No, wait . . . shit.
"I bent my Wookie."
When I was a student worker I was "volunteered" to pull cable. We were running fiber from the Science Center to the Health Professions building. At the time I had no idea what fiber was even made of, I just knew to take it from point A to point B. It was a pretty fun day though, I still remember swinging on the fiber like it was vine. Good times.
"The Internet is a fad." - WB
A clever person solves a problem. A wise person avoids it. -- Einstein
Don't bend your fiber!
Don't polish your helmet!
I'm sick of these technical articles making moral judgements on my hobbies.
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More studies are required to determine the effects of cutting 5e and 6. We have applied for a goverment grant to proceed with these studies.
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NSFW"Bent Fiber Put Networks at Risk"
No shit?
In other new, magnet endanger floppy disk and metal shrapnel is bad for your eyes
I think you just need a handy black hole or two
to bend the light by gravity. Could play hell with the equipment and personnel losses, though.
minimum bend radius for fiber is nothing that hasn't been obvious to anyone working with the stuff
I've been supplementing my diet with fiber every day now and it has certainly increased the minimum bend radius in my sigmoid colon!
Life is the leading cause of death in America.
What two colors of Raman did you use? Personally, I like the pink (shrimp) and yellow (chicken) together.
Because there weren't enough raman jokes attached to this story yet, that's why.
8. Place cut strand upright in co workers chair
-Adam
if you do fiber right, you have nothing to worry about.
So does this mean I'm going to have to stop making fiber animals with my patch cables? Damn!