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QSFP28 100GBASE ER4 1310nm 40km Dual LC Fibre Optic Transceiver Module
100G 40km QSFP28 ER4 optical transceiver is designed for use in 100-Gigabit Ethernet links up to 30km without FEC or 40km with FEC on Single Mode Fiber (SMF). It is compliant with the QSFP28 MSA, 4WDM-40 MSA, and relevant portions of IEEE 802.3bm. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP28 MSA. It converts 4 input channels of 25.78125Gb/s electrical data to 4 channels of LAN-WDM optical signals and then multiplexes them into a single channel for 103.125Gb/s optical transmission. Reversely on the receiver side, the module de-multiplexes a 103.125Gb/s optical input into 4 channels of LAN-WDM optical signals and then converts them to 4 output channels of electrical data. The central wavelengths of the 4 LAN-WDM channels are 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm as members of the LAN-WDM wavelength grid defined in IEEE 802.3ba.
Features:
Hot-pluggable QSFP28 form factor
4 channels full-duplex transceiver module
Supports 103.125Gb/s aggregate bit rate
4 channels DFB-based LAN-WDM cooling transmitter
4 channels APD ROSA
Internal CDR circuits on both receiver and transmitter channels
3.8W maximum power dissipation
Maximum link length of 40km on SMF with FEC
Duplex LC receptacle
Built-in digital diagnostic functions
Operating case temperature range: 0 to 70°C
Single 3.3V power supply
RoHS-6 compliant (lead free)
Applications:
100GBASE-ER4 Lite 100G Ethernet
100GE 4WDM-40 applications
Specification:
| Spec. | Data Rate | Wavelength | Fiber | Distance | Optical | Tx Power | Rx Sens. | Temp. |
| (bps) | (nm) | Type | Comp. | (dBm) | (dBm) | (℃) | ||
| QSFP28 SR4 | 100G | 850 | 8x MMF | OM3 70 m | VCSEL | -6~2.4 | -10.3~2.4 | 0~70 |
| OM4 100 m | ||||||||
| QSFP28 IR4 PSM | 100G | 1310 | 8x SMF | 2 km | DML/PIN | -8.4~2.4 | -11 | 0~70 |
| QSFP28 CWDM4 | 100G | CWDM | 2x SMF | 2 km | DML/PIN | -6.5~2.5 | -10~2.5 | 0~70 |
| QSFP28 IR4 | 100G | LWDM | 2x SMF | 2 km | DML/PIN | -6.5~2.5 | -10~2.5 | 0~70 |
| LR4 | 100G | LWDM | 2x SMF | 10 km | DML/PIN | -4.3~4.5 | -10.6~4.5 | 0~70 |
| ELR4+ | 100G | LWDM | 2x SMF | 20 km | DML/PIN | -2.5~4.5 | -14.5~4.5 | 0~70 |
| ER4* | 100G | LWDM | 2x SMF | 30~40 km | EML/APD | -2.5~2.9 | -20.5~-3.5 | 0~70 |
