Fixing Broken Optical Fiber: Methods, Connectors & Where to Buy for Surveillance Cameras

hello, how to connect a broken fiber optic thread;
there is monitoring done on optical fiber, at the transition from the "thick earth" fiber optic cable to the thin one that goes to the camera, the original was connected with a connector: "metal pin in the gel and in a plastic transparent tube" two ends of optical fibers were inserted - from a thick earth cable and a thin cable to the camera and one optical fiber was torn from this connection;
how to connect these optical fibers - maybe someone knows the name of the way in which the optical fibers were originally connected and where you can buy such a connection.
thanks and best regards.

There is a "welder" (expensive, even if it's just a service) or a connection using ST connectors - the manufacturer Eltra-Elda offers it in the LEXCom product family.

you did not describe this failure too precisely ... i.e. one optical fiber was destroyed from the tube? or what? maybe the whole tube, or maybe it is single-mode? you have no place to borrow and you can't do it, and probably not, it's better to look for a company that deals with fiber optics, you won't do it yourself, and if you do it, there will be a tragic attenuation and the quality of data transfer will lose so much quality that you will be nervous

Look for someone who works in teletransmission in teps. He should say who can help in this matter - there are usually both equipment and professionals there.

Nobody responsible will lend you a welding machine
And even if there is such a fool, it will take about 0.5 m to learn welding, unless it is fairly new and the automatic machine will work just fine, but it's still not certain.
As for the connectors, you need to properly prepare the optical fiber and either weld patchcords or earn a cone and a self-centering connector. Attenuation will be terrible, especially before you learn
Sharp knives with a breaker are needed to make the optical fiber, which also costs money. The optical fiber is not cut with scissors. Anyone who has seen it cut with the wrong tool knows Probably no one will lend them to you ;)

a) Search on Google for welding services for which you will pay dearly
b)ask who has a tool for self-centering joints
c) go to some university with a tele, they have one welder each
d) I don't know what it is, but it will be cheaper to get along with the guest if you take the cable with you (rather impossible)

P.S. If you weren't so mysterious (city) maybe I'd offer to help

Hello
if a colleague - the author of the topic lives in the Tri-City, I suggest you hang out next to the ETI department of Gdańsk GUT in my time, the supervisor of laboratories and the dispatcher of the OTDR as well as the portable welder was a very human man AM I do not give the name and surname for obvious reasons. In addition, there are also connectors that are slightly less efficient compared to welded ones, but in critical situations they are also able to ensure proper communication.
Regards.

exactly as the previous speakers say. A good solution is an unofficial visit to the Szczecin University of Technology.. I'm in my 5th year of electronics and telecommunications, specializing in fiber optic networks, the doctors in charge are very kind, etc... if you live nearby, report the problem there. part-time students

b. thank you all for the answers, it is true that I am doing it for the first time, the matter is as follows in detail: there is a 10mm thick optical fiber cable/tube in the ground, it enters the lighting mast on which a fixed camera is installed at the top - 6m, a thick fiber optic cable it comes out in the hole/door at the bottom of the mast and can be pulled out of the mast for about 3m, a thin, about 6mm optical fiber/tube runs from the top of the camera, in both cables/tubes, the thick one from the ground and the thin one from the camera, there is one fiber optic thread thick approx. - 0.5mm, these threads are connected in a transparent tube, length approx. 5cm, diameter approx. 7mm, inside this plastic tube there is a metal stick on the side of which are the ends of the optical fiber threads, inserted on both sides of the tube to a depth of approx. 10mm, the ends of the optical fibers are immersed they are in the gel that is in the tube and do not touch each other - the ends are about 20mm apart; it seems that the ends should touch each other, which is not the case, the tube seems to be heat-shrinkable, you can see how they embrace the ends of the metal stick, they are rounded, the tube is then attached with insulating tape to a rigid plastic rod, approx. 3mm and then the whole thing is inserted into a heat-shrinkable tube, approx. 60 cm long, heated at both ends - the tube is unheated in the middle, then it is inserted into a rigid plastic tube, approx. original and it worked - for a distance of about 1km, now the optical fiber near the connection (plastic tube) has been broken (the one from the earth thick cable / tube) and there is no image from the camera, I hoped that it could be connected as it is in the original - without a welder but you didn't describe anything like that - I don't know, I thought that connecting a broken optical fiber is simpler, but maybe you know the way I described and can advise where to buy such a thing - greetings - from -
ps. it is a large monitoring network, paid work, there are also a few other problems with this network, if anyone is interested, I invite you, unfortunately, the methods given are not possible to implement, details on priv.

I suggest starting with this:
http://wtm.ite.pwr.wroc.pl/~spatela/pdfy/0230.pdf
Once you know how, read this:
www.atel-fiberoptic.com.pl/ne/produkty/narzedzia/katalog_swd_narzedzia1.pdf

Acula wrote:

I suggest starting with this:
http://wtm.ite.pwr.wroc.pl/~spatela/pdfy/0230.pdf
Once you know how, read this:
www.atel-fiberoptic.com.pl/ne/produkty/narzedzia/katalog_swd_narzedzia1.pdf

hyhy patel;] there are basically the same basics.. if you want to be more specific about welding, let me know here. Podesle.

He will probably have to sell bottles to buy this welding machine, and if someone rents it to him, it will only be with the operator in the set

I read what Acula gave - thanks, but I still don't know: what type of connector is used in the description I gave, where to buy such a connector, what specific tools and materials are needed to make such a connector, how to check if the connection has been made correctly .. questions rather to practitioners who deal with adhesive joints on a daily basis

acula-why hasn't a branch of the forum about optical fibers and holograms been created so far? Every day there are such posts about this topic.

zhu wrote:

I read what Acula gave - thanks, but I still don't know: what type of connector is used in the description I gave, where to buy such a connector, what specific tools and materials are needed to make such a connector, how to check if the connection has been made correctly .. questions rather to practitioners who deal with adhesive joints on a daily basis.

check theoretically
-reflectometer-toy about 3 times more expensive than the welder
check practically
- see if popsrtu layout works..

Kapsis - write something about these connections or post/send material on this subject - thanks
ps. when writing about checking the optical fiber, I was thinking about working in a field distant from the end of the optical fiber, about 2 km .. and whether there is any mark or groove on the optical fiber thread, e.g. under a microscope, which will be used to lay optical fiber threads..

I'll have to search now, write exactly what welding or gluing you mean, it doesn't matter that it's 2km, it's a pimple for every "reasonably good" optical fiber

a description of the connection I mean or a similar one, I wrote a few posts above - there may be some other relatively simple and cheap glued connection - possible to do in the field ..

ok, I will read this post a few times. Because you described this problem very little, i.e. unprofessionally - but I understand that you do not know about it. you would have to have a special self-leveling table.. most often it is in special cars for laying fiber optics

Kapsis wrote:

acula-why hasn't a branch of the forum about optical fibers and holograms been created so far? There are such posts every day.

don't overdo it, not every day
Have you heard the saying that what is good for everything is good for nothing
if we divide the forum into 200 sections, each one will get dizzy and scroll to the right section And other. The most important thing is that it does not arise.
Secondly, if everyone wanted to share in such detail, I doubt it would fit in 1000
And don't write post after post ;)

ZHU, if such a thing were possible in the field, every farmer would have a fiber optic network
Your best bet would probably be to buy a V-groove like joint and a good breaker cutter. Then you cut the optical fiber, break off. You insert it into two V-shaped grooves so that the optical fiber is more or less even. Tape it, put on a protective shirt and pray that it works. if not repeat it several times. Invest in a filler and other subsequent experiments

Well, the point is that it is starting to be done everyday [I look at your electrode every day] - after all, diodes, transmitting circuits, lasers, fiber optic networks and holograms are already one branch of science .. once I wrote a post under the post to make it clearer for both of you..

Acula these V-grooves is what I mean - great :
quote
"It's probably best to buy a V-groove connector and a good cutter with a breaker. Then you cut the fiber, break it off. You put it in two V-shaped grooves so that the fiber is more or less even. Seal it, put on a protective jacket and pray that it works. do not repeat it several times. Invest in a filler and other further experiments"
it is exactly described in the 2nd material you posted;

where to buy these V-grooves, what type of cutter with a breaker is good and how exactly it is made - maybe some photos or drawings, step by step;
that's how it was done in the original, so why shouldn't it work - thanks again for your help -

with these V-grooves, I overdid it a bit, it's hard to get them
you need something like this
http://www.radiotechmkt.com.pl/files/pdf/zestawy_naprawcze.doc
but as I know the prices (technology for the military) you will sooner use cheaper LPP lens connectors

or cheaper but hard-to-reach (new) optijack connectors for field applications

and now, pathologically, you need:
http://www.techkom.com.pl/eshop.php?a=list&cat=178
and)
FO - Adhesive for fiber optic plugs
Two-component epoxy adhesive for fiber optic connectors. 4 grams in the package.
b)two plugs
http://www.techkom.com.pl/eshop.php?a=list&cat=178_163
http://www.minitran.co.uk/pages/products/list.mhtml?ct=4&sc=20
the best are with a ceramic ferrule because it is uniform, durable, and well polished, I recommend the SC type
c) one Coupler suitable for the connector
d) something to prepare the fiber
e) good luck ;)

PS I note that I do not know the prices of this company, you can check them at http://www.aver.net.pl/ceny/sieci_wtyki.htm

thanks Acula, I'm a bit disappointed with the lack of V-groove connectors - where did the Polish company that installed this monitoring come from - but where did it come from? - maybe they use something like this in telecommunications? (I wonder if it is not possible to reuse the one that is now installed with one optical fiber broken - e.g. remove the glue from this metal stick under a microscope - lay the other end of the optical fiber, pour FO glue and secure it with a heat shrink tube) ;
I have another question: how to check such a fiber after repair and how (as far as possible) fiber optics are checked - I'm more concerned with checking whether the fiber on a section of e.g. 2km is not interrupted somewhere than checking its efficiency (because probably some very expensive instruments)
to check the patency of the optical fiber, I imagine, for example, that on one side I fasten a light source, e.g. a diode, and on the other I have a receiver that measures the level of incoming light - but how is it done and with what - relatively inexpensive?
ps. how quickly the FO glue dries - Glue for fiber optic plugs
Two-component epoxy adhesive for fiber optic connectors. 4 grams in the package.

The company that will have everything is 3M, an American company, but it is based somewhere in Poland

the glue dries differently, depending on the proportions of the ingredients, at the beginning I suggest a little less hardener
I would not advise grinding the grooves because the accuracy must be a few micrometers, preferably 1
They won't have them in teps, a team with a suitcase arrives there and welds, or they use disconnectors. And even if they make them separate, they prefer factory ones with a piece of optical fiber and weld them together.
Try a ferrule It's less work than with the groove. Instead of adjusting so that they lie evenly in the grooves, you simply slide it into the tube and seal it
The trick in both cases is to cut the optical fiber well, to a great extent a technique similar to glass cutting. If you have a new knife, no problem. The face must be perpendicular to the axis.

There are no expensive gauges. The reflectometer immediately falls off. As already suggested by the level meter
This one is probably expensive but more or less described for what
http://www.tomtronix.com.pl/avo/mpm1000.htm
The price of the source is $1000, the price of the meter with the built-in source is $1500 (one window) $2000 (two windows), so maybe he can convince the boss ;)

It would be best to connect and see if it works. If it doesn't work, the only way out is to get a meter and measure both sections of the track, because you don't know if you glued it wrong or there are surprises elsewhere.

V grooves are expensive to produce (good quality) and hard to get a good result because a lot depends on the fastener, dirt and dexterity. It's easier with SC.

PS However, I would ask for optijacks, they were designed for such needs. Only they were introduced 5 years ago and they are having trouble breaking through the standards

thanks , monitoring is 5 years old ; in 3M I found something like this: http://www.3m.pl/t1pr9.html and I'm thinking whether to focus on it - I don't know the prices yet but somehow it appeals to me the most - what do you think about this solution - I'm I like it, especially that you can buy a suitcase with a set of tools and materials to make a connector.

I gave the repair kit in the previous post. Everything is nice except for one detail - the price
Remember that there are many tools inside and the price will probably be 4-5 figures
But maybe they have some promotions, it's best to ask ;)

As for the attenuation of 0.1dB, I don't want to believe it. In my opinion, you will get a minimum of about 0.3dB
Once I measured a similar link (demonstration) but it had nothing to do with these data Maybe it was a different company
The most important thing is that you clean the fiber well, so that there is not a speck of coating, otherwise you will have a problem.
I agree that 30 seconds without preparation, remember that it will take you at least 10 minutes to prepare ;)

There are no guides in the set, check how many pieces and at what price

0.1db attenuation??!!! unless you were immediately hired by 3M..even tpsa cannot obtain such attenuation on connectors in practice..it seems to me that a well-earned glued link has 0.3dB at best!..in much worse in practice

Since the connection is on the pole, I can't imagine going to this pole with a welder, or even more so a set for gluing joints.
I suggest using a Splice type connector (e.g. from AMP, they call it Corelink). You skin the optical fiber, cut it, insert it into the splice and close it.
You wrote that there is one such broken connection. It will definitely be cheaper to order a guy who will do it for a few hundred PLN than to invest in even the cheapest set.

thanks for the answer, the optical fiber connection is at the bottom of the pole, accessible through a hole in the pole which is at the bottom and closed with a metal door, fiber optics, the thick one from the ground and the thin one from the top of the pole from the camera can be pulled out of this hole for about 2 m and connect them, for example, on the ground or on a table or on some guide; did you mean connection like this: http://www.ampnetconnect.de/browse_chapter_pr...uct.php?chapter=3&productgroup=25&product=164
or
http://www.tycoelectronics.com/fiberoptics/light/Connect_Light_0603/CORELINK_Splice_0603.pdf
is it available for purchase in Poland? the picture shows that it is very simple: inserting optical fibers into the connector and closing it, I don't understand the few hundred zlotys costs - such a connector probably does not cost that much - maybe someone will answer who has already put it on and what are his experiences - this closure has the advantage that can you open and close the optical fiber several times (at least that's what I understood from the description next to the photo)?