SFP Connector Types Wiki - SFP+ Connector vs QSFP Connector vs More - QSFPTEK Blog
Amazon.com: Gigabit Multi-Mode LC Fiber to Ethernet Media Converter with A SFP SX Module, 1.25G Fiber to Copper RJ45 Media Converter, 1000Base-SX to 10/100/1000Base-TX, MMF, Transmission up to 550 meters/1804 ft :
Amazon.com: 1.25G SFP Module, 1000BASE-LX/LH Gigabit 1310nm DDM Single-Mode LC Fiber Interface Mini GBIC Transceiver for Mikrotik CRS309-1G-8S+IN/RB760iGS, up to 10km : Electronics
Dell Networking, Transceiver, SFP, 1000BASE-SX connector | Dell USA
Amazon.com: 30M OS2 LC to LC Fiber Patch Cable with 2 Pack of 1000BASE-LX Module, Single-Mode Gigabit SFP Transceiver for Cisco, Ubiquiti, Netgear and More : Electronics