Shenzhen Miray Communication Technology Co., Ltd.
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Miray’s QSFP28-100G-LR4 is a 100 Gbps Quad Small Form-factor Pluggable QSFP28 optical transceiver for use in 100 Gigabit Ethernet links over 10km single mode fiber. The QSFP28 LR4 transceiver is compliant with the QSFP28 MSA and IEEE 802.3ba. The transceiver module converts 4 input channels of 25Gb/s electrical data to 4 channels of LAN WDM optical signals and then multiplexes them into a single channel for 100Gb/s optical transmission. On the receiver side, the transceiver module de-multiplexes a 100Gb/s optical input into 4 channels of LAN WDM optical signals and then converts them to 4 output channels of electrical data.
The QSFP28-100G-LR4 transceiver optics uses an MSA compliant 38 pin edge type connector on the electrical interface and uses a duplex LC connector on optical interface. The QSFP28 LR4 optical transceiver has built-in DDM functions per QSFP28 MSA, which allows real-time access to the following operating parameters: transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage.
Absolute Maximum Ratings
| Parameter | Symbol | Unit | Min | Max |
| Storage Temperature Range | Ts | oC | -40 | 85 |
| Relative Humidity | RH | % | 0 | 95 |
| Maximum Supply Voltage | Vcc3 | V | -0.5 | 4.0 |
| Parameter | Symbol | Unit | Min | Typ | Max | Notes |
| Transmitter(per Lane) | ||||||
| Signaling Speed per Lane |
| GBd | 25.78125 ± 100 ppm |
| ||
| Lane Wavelength (range): L0 L1 L2 L3 |
| nm | 1294.53 – 1296.59 1299.02 – 1301.09 1303.54 – 1305.63 1308.09–1310.19 |
| ||
| Total Average Launch Power | Pout | dBm |
|
| 10.5 |
|
| Transmit OMA per Lane | TxOMA | dBm | -1.3 |
| 4.5 |
|
| Average Launch Power per Lane | TXPx | dBm | -4.3 |
| 4.5 |
|
| Optical Extinction Ratio | ER | dB | 4 |
|
|
|
| Side-Mode Suppression Ratio (SMSR) | SMSR | dB | 30 |
|
|
|
| Average launch power of OFF transmitter, per lane |
| dBm |
|
| -30 |
|
| Relative Intensity Noise | RIN | dB/Hz |
|
| -128 |
|
| Optical Return Loss Tolerance |
| dB |
|
| 20 |
|
| Transmitter Reflectance |
| dB |
|
| -12 |
|
| Transmitter Eye mask definition {X1,X2,X3, Y1,Y2,Y3} |
|
| {0.25,0.4,0.45,0.25,0.28,0.4} |
| ||
| Receiver(per Lane) | ||||||
| Signaling Speed per Lane |
| GBd | 25.78125 ± 100 ppm |
| ||
| Lane Wavelength (range): L0 L1 L2 L3 |
| nm | 1294.53 – 1296.59 1299.02 – 1301.09 1303.54 – 1305.63 1308.09–1310.19 |
| ||
| Receiver Sensitivity (OMA) per Lane | Rxsens | dBm |
|
| -8.6 | dBm |
| Average Received Power per Lane | RXPx | dBm | -10.6 |
| 4.5 |
|
| Damage Threshold Per Lane | Pmax | dBm |
|
| 3.4 |
|
| Return Loss | RL |
|
|
| -26 |
|
| Vertical eye closure penalty, per lane |
| dB |
|
| 1.9 |
|
| Receiver electrical 3dB upper cutoff frequency,per lane |
| GHz |
|
| 31 |
|
| LOS De-Assert | LOSD | dBm |
|
| -11.6 |
|
| LOS Assert | LOSA | dBm | -24 |
|
|
|
| LOS Hysteresis |
| dB |
| 1.5 |
| |
