Description
Features of QSFP-40G-LR4 Transceiver
- Supports 41.2Gbps aggregate bit rates
- Uncooled 4×10.3Gbps CWDM transmitter
- High-sensitivity PIN-TIA receiver
- Up to 10kmon SMF
- Duplex LC receptacles
- Hot pluggable QSFP+ form factor
- Power dissipation < 3.5W
- All-metal housing for superior EMI performance
- RoHS6 compliant (lead free)
- Operating case temperature: Commercial: 0°C to +70°C
QSFP-40G-LR4 Application
- 40GBASE-LR4
- InfiniBand QDR and DDR interconnects
- 40G Telecom Connections
Transceiver Standards
- Compliant with SFF-8436
- Compliant with SFF-8636
- Compatible with IEEE802.3ba
Optical Parameters
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section | ||||||
| Lane Centre Wavelength (range) | λ0 | 1264.5 | 1271 | 1277.5 | nm | |
| λ1 | 1284.5 | 1291 | 1297.5 | nm | ||
| λ2 | 1304.5 | 1311 | 1317.5 | nm | ||
| λ3 | 1324.5 | 1331 | 1337.5 | nm | ||
| Spectral Width (-20dB) | Δλ | 1 | nm | |||
| Side Mode Suppression Ratio | SMSR | 30 | dB | |||
| Average Optical Power per Lane | Pout | -7.0 | +2.3 | dBm | 1 | |
| OMA Power per Lane | OMA | -4 | 3.5 | dBm | 1 | |
| Laser Off Power per Lane | Poff | – | – | -30 | dBm | |
| Extinction Ratio | ER | 3.5 | – | – | dB | 2 |
| Relative Intensity Noise | RIN | – | – | -128 | dB/Hz | |
| Optical Return Loss Tolerance | – | – | 20 | dB | ||
| Transmitter eye mask definition
{X1, X2, X3, Y1, Y2, Y3} |
Compliant with IEEE802.3ba
{0.25, 0.4, 0.45, 0.25, 0.28, 0.4} |
2 | ||||
| Receiver Section | ||||||
| Lane Center Wavelength (range) | λ0 | 1264.5 | 1277.5 | nm | ||
| λ1 | 1284.5 | 1297.5 | nm | |||
| λ2 | 1304.5 | 1317.5 | nm | |||
| λ3 | 1324.5 | 1337.5 | nm | |||
| Average Receiver Power per Lane | RXPX | -13.7 | 2.3 | dBm | 3 | |
| OMA Sensitivity per Lane | RXsens | -11.5 | dBm | 3 | ||
| Los Assert | LOSA | -30 | – | – | dBm | |
| Los Dessert | LOSD | – | – | -16 | dBm | |
| Los Hysteresis | LOSH | 0.5 | – | 5 | dB | |
| Overload per Lane | Pin-max | – | – | 2.3 | dBm | 3 |
| Receiver Reflectance | – | – | -12 | dB | ||
| Damage Threshold per Lane | – | – | 3.5 | dBm | ||
Mechanical Dimension
Ordering Information
| Part Number | Product Description |
| QSFP-40G-LR4 | 40Gbps QSFP+ LR4, 10km on SMF, 0ºC ~ +70ºC, With DDM. |
