OC-48 LR-1/STM L-16.1 SFP Transceiver
https://www.epsglobal.com/Media-Library/EPSGlobal/Products/files/finisar/transceivers/FTLF1721P1xCL.jpg?ext=.jpg&maxsidesize=400
1310nm DFB, APD, OC-48 LR-1, GigE, 1x/2x FC, 2.67 Gb/s multi-rate transceiver, RoHS compliant, single mode, pluggable SFP footprint, 3.3V, LC connector, digital diagnostics, -10/70°C operation, 40km
FTLF1721P1BCL
FTLF1721P1BCL
Coherent
https://www.epsglobal.com/getmetafile/94cfad1c-656d-435e-8625-94600a97706c/Coherent