1000BASE-EX and 2G Fibre Channel (2GFC) 55km SFP Transceiver
https://www.epsglobal.com/Media-Library/EPSGlobal/Products/files/finisar/transceivers/FTLF1419P1xCL.jpg?ext=.jpg&maxsidesize=400
1310nm DFB, GigE, 1x/2x FC, 2.125 Gb/s transceiver, RoHS compliant, single mode, pluggable SFP footprint, 3.3V, LC connector, bail, digital diagnostics, -10/70°C operation, 55km
FTLF1419P1BCL
FTLF1419P1BCL
Coherent
https://www.epsglobal.com/getmetafile/94cfad1c-656d-435e-8625-94600a97706c/Coherent