AT-QSFP28-LR4 Allied Telesis Compatible 100G QSFP28 LR4 10km
Allied Telesis compatible AT-QSFP28-LR4 - Key Features
- Compatibility: Allied Telesis
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 10 km
- Average Link Budget: 6.3 dB
- Tx Wavelength: 1310 nm
- Supported Data Rate: 112 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Allied Telesis AT-QSFP28-LR4 Price
In Stock - Ships Next Business DayAllied Telesis compatible AT-QSFP28-LR4 Specifications
Form Factor | QSFP28 |
Modulation | NRZ (Non-Return to Zero) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 10 km |
Average Link Budget | 6.3 dB |
TX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
RX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
Supported Data Rate | 112 Gbps |
Supported Ethernet Applications | 100G Ethernet (103.125 Gbps) |
Optical Transport Network (OTN) Applications | OTU4 (112 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | EML Laser |
Tx Wave Bandwidth | 4 LAN WDM Seperated 1310 nm Lanes (15.66 nm 1294.53 – 1310.19nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm) |
Average Launch Power (Min) Each Lane | -4.3 dBm |
Average Launch Power (Max) Each Lane | 4.5 dBm |
Extinction Ratio (Min) | 4 dB |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 4 LAN WDM Seperated 1310 nm Lanes (15.66 nm 1294.53 – 1310.19nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm) |
Average Receiver Sensitivity (Min) Each Lane | -10.6 dBm |
Average Receiver Sensitivity (Max) Each Lane | -8.6 dBm |
Receiver Overload | 5.5 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 3.5 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, IEEE 802.3ba, IEEE 802.3bm, 100GBASE-LR4, QSFP28 MSA, SFF-8636 (Management Interface for 4-lane modules), SFF-8665 |
Allied Telesis compatible AT-QSFP28-LR4 Datasheet
v3Complete technical specifications and product details
Allied Telesis compatible AT-QSFP28-LR4 Description
EdgeOptic's AT-QSFP28-LR4 compatible is an Allied Telesis-coded 100GBASE-LR4 QSFP28 transceiver for AlliedWare Plus chassis with 100G QSFP28 cages. Allied Telesis publishes the optic on its product portal under the part designation QSFP28LR4; the AT-QSFP28-LR4 form is the customer-facing ordering code. The module reaches 10 km over single-mode fiber with a guaranteed 6.3 dB link budget, an LC duplex connector, and DOM diagnostics readable from the host. AlliedWare Plus is the operating system family across the chassis that accept this optic.
The optical engine uses an EML transmitter and PIN photodiode receiver across the four LAN WDM lanes at 1295.56, 1300.05, 1304.58 and 1309.14 nm. Aggregate line rate is 103.125 Gbps (4 by 25.78125 Gbps NRZ), aligned to the IEEE 802.3ba Clause 88 100GBASE-LR4 specification and the SFF-8665 QSFP28 MSA. Operating temperature range is 0 to 70 C for commercial deployments.
Allied Telesis x950 series (including the x950-28XSQ with four 40G/100G QSFP+/QSFP28 ports) and the SwitchBlade x908 GEN2 fitted with the XEM2-1CQ 100G QSFP28 expansion module are among the AlliedWare Plus chassis that accept 100GBASE-LR4 QSFP28 optics; verify the AT-QSFP28-LR4 against the Allied Telesis transceiver compatibility guide for your specific switch model and AlliedWare Plus version. EdgeOptic's compatible carries Allied Telesis-recognized EEPROM so the module enumerates and operates without configuration overrides, and DOM telemetry is exposed via the standard QSFP28 I2C interface for AlliedWare Plus diagnostics.
Typical deployments include enterprise core uplinks, campus aggregation and metro 100G interconnects where the 10 km LR4 reach matches inter-building fiber spans. The compatible meets CE and RoHS, ships with the same optical performance envelope as the Allied Telesis OEM equivalent, and supports DOM polling for live link-budget visibility. For ordering questions, fiber-plant validation or larger-volume quotes, contact our sales team.
Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty.
Frequently Asked Questions
Which Allied Telesis switches accept the AT-QSFP28-LR4?
The x950 series (the x950-28XSQ provides four 40G/100G QSFP+/QSFP28 ports) and the SwitchBlade x908 GEN2 fitted with the XEM2-1CQ 100G QSFP28 expansion module are among the AlliedWare Plus chassis that accept 100GBASE-LR4 QSFP28 optics. Verify the AT-QSFP28-LR4 against the Allied Telesis transceiver compatibility guide for your specific switch model and AlliedWare Plus version.
Why is the part number sometimes shown as QSFP28LR4 and sometimes as AT-QSFP28-LR4?
Allied Telesis lists the optic on its product portal under the designation QSFP28LR4. The customer-facing ordering form is AT-QSFP28-LR4, where the AT prefix marks the Allied Telesis vendor namespace. Both names refer to the same 100GBASE-LR4 10 km QSFP28 module.
Does the AT-QSFP28-LR4 support DOM under AlliedWare Plus?
Yes. The module exposes diagnostics via the I2C interface defined in the QSFP28 MSA, which AlliedWare Plus reads as standard digital diagnostics. Engineers can poll temperature, supply voltage, TX bias, TX power and RX power directly from the switch CLI for live link-budget visibility.
Can the AT-QSFP28-LR4 compatible be used in a non-Allied Telesis switch?
The optical engine itself meets the IEEE 802.3ba 100GBASE-LR4 specification, but EdgeOptic's compatible ships with EEPROM coded for Allied Telesis platform recognition. Other vendors typically reject foreign-coded optics or report a vendor mismatch. For a different host vendor, request the matching vendor-coded EdgeOptic compatible instead of recoding this part.