Date created: 06/29/22 15:38:47. Last modified: 07/05/22 15:31:33

Transceivers

Transceiver Recap

An SFP transceiver supports from 100Mbps and 1Gbps over a single wavelength. E.g., 100BASE-SX/LX/EX/ZX and 1000BASE-SX/LX/EX/ZX.
A cSFP transceiver supports 2x 100Mbps or 2x 1Gbps bi-di signals in the same form factor as an SFP i.e., 2x 1Gbps single-fibre bi-di interfaces in once physical SFP slot. E.g., 2x 100Base-BXD or 2x 1000BASE-BX
An SFP+ transceiver supports 10Gbps over a single wavelength. E.g., 10GBASE-SR/LR/ER/ZR
An SFP28 transceiver supports 25Gbps over a single wavelength. E.g., 25GBASE-SR/LR/BX
An SFP-DD transceiver is similar to 2x SFP28 transceivers using 2x 25Gbps electrical lanes (NRZ) to support 1x 50Gbps wavelength.
An SFP56 transceiver uses 1x 50Gbps (PAM4) electrical lanes to provide 1x 50Gbps wavelength. E.g., 50GBASE-LR.
An SFP56-DD transceiver is similar to 2x SFP56 transceivers using 2x 50Gbps electrical lanes (PAM4) to provide 1x 100Gbps wavelength. E.g., 100GBASE-LR. Some transceiver include gearbox to convert 4x25G electrical to 1x 100G optical.
An SFP112 transceiver uses a single 100Gbps electrical lane to support 1x 100Gbps wavelength.
An SFP-DD112 transceiver is similar to 2x SFP112 transceivers supporting 1x 200Gbps wavelength.

A QSFP transceiver is similar to 4x SFP transceivers using 4x 1Gbps lanes to support 1x 4Gbps wavelength. E.g., 4GBASE-LX
A QSFP+ transceiver is similar to 4x SFP+ transceivers using 4x 10Gbps wavelengths to support 40Gbps. E.g., 40GBASE-SR4/LR4/ER4
A QSFP28 transceiver is similar to 4x SFP28 transceivers using 4x 25Gbps wavelengths to support 100Gbps e.g., 100GBASE-SR4/LR4/ER4/PSM4
A QSFP28 transceiver can also use 4x 25Gbps electrical lanes to support 1x 100Gbps wavelength e.g., 100GBASE-DR/FR/LR. Some transceiver include gearbox to convert 4x25G electrical to 1x 100G optical.
A QSFP56 transceiver is similar to QSFP28 but it uses PAM4 encoding to double the data rate of the 4x 25Gbps lanes to be 4x 50Gbps wavelengths to support 200Gbps in total. E.g., 200GBASE-FR4/LR4/ER4
A QSFP112 transceiver is similar to 4x SFP112 transceivers and uses 4x 100G electrical lanes (PAM4) to provide 4x 100Gbps wavelengths.
A QSFP-DD (QSFP56-DD) is similar to 2x QSFP56 transceivers providing 8x 50Gbps PAM4 lanes.
A QSFP-DD transceiver uses 8x 50Gbps lanes (PAM4) to provide 400Gbps in total over 8x 50Gbps wavelengths over 8 fibre pairs. E.g., 400GBASE-SR8
A QSFP-DD transceiver uses 8x 50Gbps lanes (PAM4) to provide 400Gbps in total over 8x 50Gbps wavelengths over 4 fibre pairs. E.g., 400GBASE-SR4.2
A QSFP-DD transceiver uses 8x 50Gbps lanes (PAM4) to provide 400Gbps in total over 8x 50Gbps wavelengths over 1 fibre pair. E.g., 400GBASE-FR8/LR8/ER8
A QSFP-DD transceiver uses 8x 50Gbps lanes (PAM4) to provide 400Gbps in total over 4x 100Gbps wavelengths over 4 fibre pairs. E.g., 400GBASE-DR4/DR4+
A QSFP-DD transceiver uses 8x 50Gbps lanes (PAM4) to provide 400Gbps in total over 4x 100Gbps wavelengths over 1 fibre pair. E.g., 400GBASE-FR4/LR4
A QSFP-DD112 transceiver is similar to 2x QSFP112 transceivers using 8x 100Gbps electrical lanes to providing 8x 100Gbps wavelengths over 8 fibre pairs. E.g., 800GBASE-DR8
A QSFP-DD800 transceiver uses 8x 100Gbps electrical lanes to provide 8x 100Gbps wavelengths. E.g., 800GBASE-SR8

An OSPF supports 8x 50Gbps PAM4 electrical lanes or 100Gbps PAM4 electrical lanes.
An OSPF transceiver uses 8x 50Gbps electrical lanes (PAM4) to provide 4x 100Gbps wavelengths over 4 fibre pairs. E.g., 400GBASE-SR8
An OSPF transceiver uses 8x 50Gbps electrical lanes (PAM4) to provide 8x 50Gbps wavelengths over 8 fibre pairs. E.g., 400GBASE-DR4/DR4+
An OSPF transceiver uses 4x 100Gbps electrical lanes (PAM4) to provide 4x 100Gbps wavelengths. E.g., 400GBASE-FR4/LR4
An OSPF transceiver uses 8x 100Gbps electrical lanes (PAM4) to provide 8x 100Gbps wavelengths.