[pavelstoev]

And clean the fiber connector ends with a special cloth or cleaning liquid. Once, I had an intermittent link due to dust particles.

Fun fact 1: When you don't have a proper OTDR fiber tester to check for breaks, you can shine a laser pointer down the fiber and see it projected out on a sheet of paper on the other end (you might have to call the person on the other end).

Fun fact 2: If the other end is plugged into a transceiver, don't look at the fiber end directly; instead, look at it through your phone camera. If all is working correctly, you should be able to see a faint purple light out of one of the strands.

P.S. always remember to roll it if no link initially :)

[traceroute66]

> If the other end is plugged into a transceiver, don't look at the fiber end directly

Let me fix that for you.

Don't look at the fiber end directly, always assume it is plugged in unless you can see the other end yourself with your own eyes.

Fibre light meters can be bought cheaply for a basic troubleshooting bag kit-out if you don't fancy splashing out on a fancy device.

[rowanG077]

The last one may not work anymore. A ton of phones nowadays have IR filters.

[moron4hire]

They all do and always have, they just aren't perfect.

[rowanG077]

Really? I thought they usually used to have no filters, especially on the front camera. Well of course the lenses always filtered some IR light, but I wouldn't call that a filter, they also "filter" non IR light. A filter to me is a dedicated element or coating that prevents the majority of IR to be transmitted.

[pavelstoev]

works on my iphone 13