QSFP-40G-ER4 is a transceiver module designed for 40km optical communication applications. The design is compliant to 40GBASE-ER4 of the IEEE 802.3ba standard. The module converts 4 inputs channels (ch) of 10Gb/s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb/s optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 40Gb/s input into 4 CWDM channels signals, and converts them to 4 channel output electrical data.The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm as members of the CWDM wavelength grid defined in ITU-T G.694.2. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface. To minimize the optical dispersion in the long-haul system, single-mode fiber (SMF) has to be applied in this module.
| Weight | 0.045 kg |
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40GBASE-ER4 QSFP+ 1310nm 40km
| Receiver Sensitivity | <-19dBm |
| Part Number | QSFP-40G-ER4 |
| Vendor Name | Rayoptek |
| Form Factor | QSFP+ |
| Wavelength | 1310nm |
| Connector | LC Duplex |
| Transimitter Type | DFB CWDM |
| Data Rate | up to 45.2Gbps (4×11.3Gbps) |
| Reach | 40km |
| Cable Type | SMF |
| DDM/DOM | Supported |
| TX Power | 2.7~4.5dBm |
| Power Consumption | <3.5W |
| Receiver Type | APD |
| Operating Temperature | 0 to 70°C |
| Extinction Ratio | >5.5dB |
| Host FEC | Supported |
| BER | 1E-12 |
| Warranty | 3 years |
| Protocols | OTN OTU3, 40G Ethernet, Infiniband, SATA/SAS3, MSA Compliant |
For detailed electrical, optical, and mechanical specifications, download the official technical datasheet.



