Amazon.com: 1.25G SFP Transceiver 1000Base-LX, 1310nm SMF, up to 10 km, Compatible with Juniper QFX-SFP-1GE-LX, Ubiquiti UniFi, Mikrotik, D-Link, Netgear and More : Electronics
Huawei SFP-1.25G-LX-20 Compatible 1000BASE-LX SFP 1310nm 20km DOM Transceiver
Amazon.com: 1.25 Gigabit Single Mode LC Duplex Transceiver,1000Base-LX Dual Fiber SFP Module,1310nm SMF, up to 10 km,DDM,Compatible with Cisco, Ubiquiti, Mikrotik,Netgear, Dlink,Linksys and More (1000M, x1) : Electronics