Attenuators go on each respective receive side. FS.com has them too.
I’ve not been following the thread but you probably don’t want the passive direct attach 40G cables in the picture. You’d know if you had 40G devices to plug it into.
Stick with 1G and Cisco is a compatible with anything you’re likely to put it in.
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The lowest ‘G’ they have on FS.com is a 10G. Is that still too much?
It depends what switch and/or interface card you’re putting them into.
But yes, probably. You’re probably searching for SFP+ instead of just SFP.
See: Cisco GLC-SX-MM 1000BASE-SX SFP Transceiver Module - FS
Here’s the attenuators: Fixed Male-Female-LC/UPC Fiber Optic Attenuator 1~30dB optional [AT-M-LCU] - FS
Attenuators go on the right-side which is receive reducing the laser power avoiding over driving the receiver. Small form-factor pluggable transceiver - Wikipedia
And a very good primer on SFPs: How Many Types of SFP Transceivers Do You Know | FS Community
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Awesome thanks alot thats very helpful. Ill look through this
Isn’t the one you have in your line a dual fiber? I wanted to try the single fiber since some say there has been a benefit
How about this: Cisco GLC-LH-SM-20 1000BASE-LX/LH SFP Transceiver Module - FS
I think you mean single-mode vs. multi-mode. Yes, I’ve read some hear a difference and I thought I may have too. I have access to SFPs through my office so I was able to try them and later purchased some through FS.com.
It’s best to get a selection of attenuators if you’re going with single-mode to avoid the eventual overload, though it may never happen. Our bandwidth use is so, so very low and the corrections happen so quickly you’ll likely never be able to hear it but from a fiber perspective it’s not good to over load.
Here’s a 2KM single-mode that’s also ruggedized to withstand higher temps. We don’t need this in our use but the spec is higher and it’s $5 more. Customized 1000BASE-SX SFP 1310nm 2km DOM LC MMF Transceiver Module for MMF - FS
I would avoid 10KM and 20KM versions. It’s simply way too much power with a 1M cable.
For singlemode, it is usually used in long distance transmission. For Multimode, short distance. You can find some articles about singlemode vs multimode from this website: https://www.hyc-system.com
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