12g Video Bidi Sfp Module With Sdi Function 10/20km,12g Sm 1270/1310nm 10km 20km Bi-directional Sdi Sfp Video Transceiver - Fiber Optic Equipment - AliExpress
1000BASE-BX-D BiDi SFP 1490nm-TX/1310nm-RX 10-20km DOM LC SMF Transceiver
SFP-5020-WA - Fast Ethernet OC3 or STM-1 BiDirectional single strand WDM SFP transceiver, Tx:1310nm/Rx:1550nm, type A, max range 20Km, single LC connector