E-link China Technology Co.,LTD
E-link China Technology Co.,Ltd. Professional Fiber Optical Communication and CCTV Security Transmission Product Manufacturer
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Fiber Optic Module 50G ER QSFP28 40KM Transceiver Duplex LC Connector
50G QSFP Transceiver Advantages
► Compliant with QSFP28 Standard
► Single 3.3V Supply Voltage
► Maximum power consumption 4.5W
► EML laser and APD Receiver
► QSFP28 MSA package with duplex LC connector
Transmitter Optical Specifications
| Parameter | Symbol | Min. | Typical | Max. | Unit | Notes |
| Wavelength | λ | 1304.5 | 1311 | 1317.5 | nm |
|
| Side-mode suppression ratio | SMSR | 30 |
|
| dB |
|
| Average launch power | POUT | 0.4 | - | 6.63 | dBm |
|
| Average launch power of OFF transmitter | POUT_OFF | - | - | -15 | dBm |
|
| Outer Optical Modulation Amplitude (OMAouter) | POUTL | 3.4 | - | 7.4 | dBm |
|
| Extinction ratio | ER | 6 | - | - | dB |
|
| Launch power in OMAouter minus TDECQ | OMA-TDECQ | 2 | - | - | dBm |
|
| Transmitter and dispersion eye closure for PAM4 (TDECQ) | TDECQ | - | - | 3.2 | dB | Note |
| Transmitter reflectance |
| - | - | -26 | dB |
Receiver Optical Specifications
| Parameter | Symbol | Min. | Typical | Max. | Unit | Notes |
| Wavelength | λ | 1304.5 | 1311 | 1317.5 | nm |
|
| Receiver sensitivity (OMAouter) |
|
|
| max(−15.1, SECQ − 16.5) | dBm | Note |
| Damage Threshold | P_damage | -2.37 | - | - | dBm |
|
| Overload |
| -3.37 | - | - | dBm |
|
| Average Receive Power | - | -17.6 | - | -3.37 | dBm |
|
| Receive power (OMAouter) | OMA | - | - | -2.6 | dBm |
|
| Receiver Reflectance | RXR | - | - | -26 | dB |
|
| LOS assert | LOSA | -30 |
|
| dBm |
|
| LOS de-assert | LOSD |
|
| -20 | dBm |
|
| LOS hysteresis | LOSH | 0.5 |
|
| dB |
QSFP+ Module Pad Layout
Ordering Information
| Part Number | Application | Data Rate | Laser Source | Fiber Type |
|
LNK-SFP50G-ER
|
50GBASE-ER
|
53.125 Gb/s
|
EML Laser
| SMF |