400G OSFP Transceiver Types
Below lists some current main 400G OSFP transceiver types: OSFP SR8, OSFP DR4, OSFP DR4+, OSFP FR4, OSFP 2*FR4, and OSFP LR4, which summarize OSFP transceiver according to the two transmission types (over multimode fiber and single-mode fiber) they support.
| Transmission Type | OSFP Product Description | Reach | Optical Connector | Wavelength | Optical Modulation | Protocol |
| Multimode fiber | 400G OSFP SR8 | up to 100m over parallel MMF | MTP-16/MPO-16 | 850nm | 50G PAM4 | IEEE P802.3cm;IEEE 802.3cd |
| Single-mode fiber | 400G OSFP DR4 | up to 500m over parallel SMF | MTP-12/MPO-12 | 1310nm | 100G PAM4 | IEEE 802.3bs |
| 4000G OSFP XDR4/DR4+ | up to 2km over parallel SMF | MTP-12/MPO-12 | 1310nm | 100G PAM4 | / | |
| 400G OSFP FR4 | up to 2km over duplex SMF | LC | CWDM4 wavelength | 100G PAM4 | 100Glambda MSA | |
| 400G OSFP 2FR4 | up to 2km over duplex SMF | CS | CWDM4 wavelength | 50G PAM4 | IEEE 802.3bs | |
| 400G OSFP LR4 | up to 10km over duplex SMF | LC | CWDM4 wavelength | 100G PAM4 | 100Glambda MS |
Fibers Connections for 400G OSFP Transceivers
400G OSFP SR8
● Connect a 400G OSFP SR8 transceiver with another 400G OSFP SR8 transceiver over an MTP-16/MPO-16 cable.
● 400G OSFP SR8 to 2× 200G SR4 over MPO-16 to 2× MPO-8 breakout cable.
● 400G OSFP SR8 to 8× 50G SFP via MTP-16 to 8× LC duplex breakout cable with up to 100m.
400G OSFP DR4
● 400G OSFP DR4 to 400G OSFP DR4 over an MTP-12/MPO-12 cable.
● 400G OSFP DR4 to 4× 100G DR4 over MTP-12/MPO-12 to 4× LC duplex breakout cable.
400G OSFP XDR4/DR4+
● 400G OSFP DR4+ to 400G OSFP DR4+ over an MTP-12/MPO-12 cable.
● 400G OSFP DR4+ to 4× 100G DR over MTP-12/MPO-12 to 4× LC duplex breakout cable.
400G OSFP FR4
● 400G OSFP FR4 to 400G OSFP FR4 over duplex LC cable.
400G OSFP 2FR4
● OSFP 2FR4 can break out to 2× 200G and interop with 2× 200G-FR4 QSFP transceivers via 2× CS to 2× LC duplex cable.
