TP Link TL-SM321B - Single-Mode MiniGBIC 1000Base-BX SFP Module | WDM Bi-Directional using a single strand of fiber | LC Connector | Max Distance up to 10 km over 9/125 µm Single-mode fiber | Wavelength TX: 1310nm / RX: 1550nm | Operating Temperature: 0C~70C
Planet MFB-TFA20, Industrial Switch SFP-Port 100Base-BX Single Mode (WDM BiDi, TX:1310nm, RX 1550nm) mini-GBIC module-max Distance up to 20km Operating Temp (-40~75C). Works in pair with MFB-TFB20 (sold seperate)
MikroTik S-3553LC20D, a pair of SFP transceivers, the S-35LC20D is a 1.25G Single Mode optical SFP module with a LC connector, T1310nm/R1550nm, which works for connections up to 20km and supports DDM. The S-53LC20D is a 1.25G Single Mode optical SFP transeiver with an LC connector,T1550nm/R1310nm, which works for connections up to 20km and supports DDM.
Planet FT-806A20 - 10/100BASE-TX to 100BASE-FX | WDM TX:1310nm RX: 1550nm | SC/ SingleMode | Bi-directional Bridge Media Converter | 20 km | You must connect FT-806A20 / FT-806A60 to one end while FT-806B20 / FT-806B60 to the other end
Planet FT-806B20 - 10/100BASE-TX to 100BASE-FX | WDM TX:1550nm RX: 1310nm | SC/ SingleMode | Bi-directional Bridge Media Converter | 20 km | You must connect FT-806A20 / FT-806A60 to one end while FT-806B20 / FT-806B60 to the other end
MaxLink ML-S3155-20 - 1.25G SFP optical module | WDM | SM | Tx 1310/Rx1550nm | 20 km | 1x LC connector | DDM | Modules are compatible with all MikroTik and Ubiquiti Network products and with others marked as "Cisco compatible".
MaxLink ML-S5531-20 - 1.25G SFP optical module | WDM BiDi | Single Mode | Tx 1550/Rx1310nm | 20 km | 1x LC connector | DDM | Modules are compatible with all MikroTik and Ubiquiti Network products and with others marked as "Cisco compatible".
MaxLink ML-S+2733-10 - 10G SFP+ optical module | WDM | SM | Tx 1270/Rx1330nm | 10 km | 1x LC connector | DDM | Modules are compatible with all MikroTik and Ubiquiti Network products and with others marked as "Cisco compatible".
MaxLink ML-S+3327-10 - 10G SFP+ optical module | WDM | SM | Tx 1330/Rx1270nm | 10 km | 1x LC connector | DDM | Modules are compatible with all MikroTik and Ubiquiti Network products and with others marked as "Cisco compatible".
Ubiquiti Networks UF-SM-1G-S - U Fiber | Single-Mode SFP BiDi Fiber Module 1-pair | (1) LC connector type | TX wavelength Blue 1310nm/Yellow 1550nm | RX wavelength Blue 1550nm/Yellow 1310nm | 1.25 Gbps SFP data rate | Max Cable Distance supported up to 3 km
Ubiquiti Networks UF-SM-10G-S - U Fiber | Single-Mode SFP BiDi Fiber Module 1-pair | (1) LC connector type | TX wavelength Blue 1270nm/Yellow 1330nm | RX wavelength Blue 1330nm/Yellow 1270nm | 10Gbps SFP+ data rate | Max Cable Distance supported up to 10 km
MaxLink ML-S3155-40 - 1.25G SFP optical module | WDM | SM | Tx 1310/Rx1550nm | 40 km | 1x LC connector | DDM | Modules are compatible with all MikroTik and Ubiquiti Network products and with others marked as "Cisco compatible".
MaxLink ML-S5531-20-SC, 1.25G SFP optical module, WDM(BiDi), SM, Tx 1550/Rx1310nm, 20km, 1x SC connector, DDM, Modules are compatible with all MikroTik and Ubiquiti Network products and with others marked as "Cisco compatible".. For complete link you need ML-S3155-20-SC WDM(BiDi) SM Tx130/Rx 1550) module