Telecommunications 101

Kaos

[H]ard|Gawd
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Oct 14, 2003
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WORKING WITH FIBER

make sure that you do not poke yourself with the exposed fiber once you strip the jacket off or cleave it. The fiber is small enough to fit into your pores and will disolve into your bloodstream, then you will have to go to the ER which is not fun. Ruber gloves (the thin kind) can help prevent against this. Just be extremely careful and youll be okay. Dont forget to wear eye protection as well and ive been stripping the jacket and saw the fiber shoot right out of the strippers.

Most guys use a ball of tape to keep their cleaved fiber remainsfrom getting everywhere, but I like to use a pop bottle or something to that extent.

safety first!
 

unix_foo

[H]ard|Gawd
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Jun 21, 2002
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great info

I am in network operations and deal with this stuff alot. I admit I am a data guy and know a little bit of this. Thanks for the great info. My next paycheck is coming your way. :p
 

Kaos

[H]ard|Gawd
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Sorry I got the fiber thing wrong....what it does is break off into blood stream, makes its way into your heart, gets stuck inside the valves and pokes holes in your heart until you bleed to death.
 

Flagg

Limp Gawd
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Mar 12, 2001
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266
Here is another safety tip. I learned this from watching another guy do it wrong. :) When you are cleaning a fiber. You typically use a microscopt (for lack of a better term) to look at the connector of the fiber. you can then see oil, dirt, grime and other nasty stuff and then use a clea-top <sp?> to clean it. MAKE SURE THAT THE LIGHTSOURCE IS POWERED OFF AT THE OTHER END OF THE FIBER!!! You see in single-mode fiber operations you are dealing with extremely high powered lasers thats are operating in the 1450nm range. Then add on to the fact that you will be looking through a microscope at 30x magnification. You can do some serious damage to your eyes looking directly into a laser like that, add to the fact that it is being concentrated through a microscopr and you get bad news.
 

Kaos

[H]ard|Gawd
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I always terminate fiber while its unplugged at both ends, after I cleave it (score it for insertion into the connector) I use alcohol swipe pads to clean the fiber. then i use the fiberscope (that's the official name I think) to verify I made a good termination. what youll see if you ever have to do this is a small circle with a darker and smaller circle inside of it. the outer circle is the jacket and the inner circle is the fiber, youre looking for a smooth and clean surface with no light spots (often look yellow) and youll have a good connection.
 

niccoli

Limp Gawd
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Feb 13, 2002
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432
Does anybody have a good tutorial / how-to for cable lacing? I've seen it done by alot of the telco guys and have been trying to learn how to do it but I can't seem to find a good how-to. Cable lacing looks amazing and wears better on the cables, not as much worry about over-tightening the zip-tie.
 

Kaos

[H]ard|Gawd
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thats something you need to be taught hands on....tough stuff
.
 

niccoli

Limp Gawd
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Feb 13, 2002
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Thanks Kaos, I've learned quite a bit from one of our CO tech's....he's been cable lacing for 35+ years so he knows his stuff. It's a pain in the butt but every data center install we've done since I've learned it I've been complimented about how nice everything looks and have actually taught a few other IT guys how to cable lace. I'm a little overboard now as I hate seeing cables out of place or zip tied down.
 

Kaos

[H]ard|Gawd
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well you know what zip ties can do....nasty little things for permanent installs. I really prefer velcro for smaller environments, but for bicsi nothing beats a laced cable.
 

skylab

2[H]4U
Joined
Sep 5, 2001
Messages
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Flagg said:
Here is another safety tip. I learned this from watching another guy do it wrong. :) When you are cleaning a fiber. You typically use a microscopt (for lack of a better term) to look at the connector of the fiber. you can then see oil, dirt, grime and other nasty stuff and then use a clea-top <sp?> to clean it. MAKE SURE THAT THE LIGHTSOURCE IS POWERED OFF AT THE OTHER END OF THE FIBER!!! You see in single-mode fiber operations you are dealing with extremely high powered lasers thats are operating in the 1450nm range. Then add on to the fact that you will be looking through a microscope at 30x magnification. You can do some serious damage to your eyes looking directly into a laser like that, add to the fact that it is being concentrated through a microscopr and you get bad news.
true on the fiberscope, but most good ones have IR filter as an added safety feature, but yes make sure the far end is dark before looking into it.
 
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