how to attach a fiber cable?

[mojo_1234]

Hi all,

does anyone of you have a proper approach on connecting a fiber cable to a laser diode (pressed in a Aixiz housing)?

Thorlabs is offering some kind of "professional" fiber connectors - but they're just too expensive (>100 bucks :banned for playing around with fiber cables...

It's no problem to get some plain fiber cable... but I can't find any "simple" connectors...

Any help is highly appreciated...

Cheers,

 

[Cyparagon]

If you're simply "playing around," just focus a laser into a TOSLINK cable. The diameter is large enough you don't need anything special to launch the beam.

 

[Blord]

That is a nice trick to make a beam expander. I will try it !

 

[Bluefan]

It makes a lousy beam expander as the fiber has a huge diameter and is thus horribly multimode. A DPSS laser has a very low M^2 value, so a single mode fiber (3~4um) would give a far better beam profile than this ~1mm diameter fiber without significantly higher losses.

 

[mojo_1234]

Thanks all for your replies.

The idea to just use a cheap TOSLINK cable sounds perfect (am I blind?). This is why I love this forum

And for a few bucks you get a suitable jack:

--> TOTX-173 TOSLINK sender module

I going to order some of them today and check if it's possible to attach them in front of an AIXIZ module...

Things can be so easy...

Cheers

 

[jakeGT]

What lens is that at the end Cyp?

 

[Cyparagon]

I don't remember. Something out of a camera maybe? Whatever you use, it needs to have a short focal length.

Yes, the output from a TOSLINK fiber will make for a very divergent beam, and using a proper fiber and launching system and collimator will give much better results. But remember this is just "playing around." No need to spend buku money for that.

 

[BShanahan14rulz]

Where would be a good place to start looking for single-mode fiber? Would multimode fiber like we use in networks be significantly better than the "TOSLINK" fiber?

 

[piferal]

Where would be a good place to start looking for single-mode fiber? Would multimode fiber like we use in networks be significantly better than the "TOSLINK" fiber?

Here you have 85mt at a great price.

It is just one example, but you can find many of them :beer:

85m SC-SC Single Mode Fiber Optic Cable | eBay

 

[Bluefan]

Multimode has a bit lower losses I think. The cable you link to has a 9um core diameter, which is multimode for 532nm, it's singlemode for 1550nm.

 

[dfhrace]

thats really cool! i am so trying this when i get home!