there is no performance impact of using 3rd party optics.
Regarding which optic for MIC-3D-4XGE-XFP. This MIC has 4 XFP-slots which is a different form factor than SFP+.
You could eg. use Prolabs EX-XFP-10GE-BXD-20KM-C and EX-XFP-10GE-BXU-20KM-C. Please be aware with bidi optics they need to be in pairs as transmit/receive wavelengths has to match. In this case you can see tx/rx on the SKU description from Prolabs. Other vendors has similar optics available, use your google-foo to find these. Prolabs are just my personal go-to-vendor :-)
10GBASE-BXD XFP, Tx1330nm/Rx1270nm, 20km
10GBASE-BXU XFP, Tx1270nm/Rx1330nm, 20km
Please remember to kudo if you can use the answer...
-- Best regards,
Jonas Hauge Jensen Systems Engineer, SEC Datacom A/S (Denmark)