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Network UFies (fiber in particular) - a question	by radiowave911	2013-02-21 10:39:56
Does a device exist that will tell me if a fiber or GBIC/SFP/<insert-interface-here> is actually emitting light when there is no visible component to the light (or it is a laser source)? We had a failure this morning on one of the redundant links between our core network and the Passive Optical Network we are starting to roll out. For some reason, the failure was not detected by network monitoring (that is a whole other rant). I suspect one of the SFP modules experienced a failure. The problem is, these operate at 1310nm. Given that it is a long-haul transceiver, it is likely laser as well. Short of frying my retina, how can I tell if it is emitting light?
[ Reply ]
If it's visible light, just shine it at a piece of	by RetiQlum2	2013-02-21 10:49:23
Most of the Fiber systems I have seen use	by Classic_Jon	2013-02-21 11:01:01
This is carrier grade.	by radiowave911	2013-02-21 11:36:59
Exactly. 1310 is invisible (and damaging) to the	by Twitchh	2013-02-21 11:55:47
Grab a camera-equipped Laptop,	by LongFist	2013-02-21 13:02:50
If it's infrared they make a credit-card-sized	by wwill	2013-02-21 11:02:35
Thanks for that info... I need to go pick one of	by Classic_Jon	2013-02-21 11:09:34
They're cheap and they last about forever.	by wwill	2013-02-21 11:21:39
That's what was tickling the back of my memory	by radiowave911	2013-02-21 11:39:45
Got a wii handy?	by AndyA	2013-02-21 11:08:59
Ohhh nice, didnt think of that! I have a	by Classic_Jon	2013-02-21 11:12:58
It's easy enough to convert most cameras	by AndyA	2013-02-21 11:23:38
Not at work :) (n/t)	by radiowave911	2013-02-21 11:40:40
Thanks for the responses.	by radiowave911	2013-02-21 11:44:06
Do not look into SM 1310 devices/fiber!	by Twitchh	2013-02-21 11:53:22
Like I mentioned -	by radiowave911	2013-02-21 12:00:02
Ayup. :-) (n/t)	by Twitchh	2013-02-21 12:02:24
Looks like IR LEDs are typically around 950nm	by AndyA	2013-02-21 11:47:56
That's what I am afraid of.	by radiowave911	2013-02-21 12:02:18
Noyes OPM1 Optical Power Meter	by Twitchh	2013-02-21 11:51:03
Looking at that site, it looks like the	by radiowave911	2013-02-21 12:13:12
Cool -- Glad I could help. They make great stuff. (n/t)	by Twitchh	2013-02-21 12:30:32
The big question - as with everything	by radiowave911	2013-02-21 13:03:41
You have access to an OTDR?	by kahuana	2013-02-21 16:32:13
Got a Sony Camcorder handy?	by kahuana	2013-02-21 16:34:17

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