The 100Gbps QSFP28 LR4 Optical Transceiver is a high-performance module designed for long-range optical communication over single-mode fiber (SMF) up to 10 kilometers. Compliant with IEEE 802.3ba 100GBASE-LR4 standards, the module converts four 25Gbps electrical input channels into LAN WDM optical signals, multiplexing them into a single channel for 100Gbps transmission. At the receiver end, it de-multiplexes the 100Gbps optical input into four 25Gbps LAN WDM signals and converts them back into electrical signals. The module utilizes cooled LAN WDM DFB lasers for transmission and PIN ROSA for reception, ensuring superior performance in 100G Ethernet and client-side telecom connections.
Operating on a single +3.3V power supply, the transceiver consumes less than 3.5W, providing energy efficiency. It is hot-pluggable with a QSFP28 MSA-compliant form factor and features a duplex LC connector for seamless integration. Designed for robust operation, it functions reliably in environments with temperatures ranging from 0°C to 70°C. The module also includes advanced digital diagnostic monitoring, allowing real-time tracking of parameters such as temperature, voltage, bias current, and optical power. With its compact design and adherence to stringent standards, the QSFP28 LR4 is an ideal solution for high-speed, long-range networking applications.
The CT-QSFP28-LR4 is a 100Gb/s optical transceiver compliant with IEEE 802.3ba 100GBASE-LR4. It converts four 25 Gb/s electrical channels into four LAN-WDM optical channels (1295–1310 nm), multiplexed into a single fiber link via duplex LC connectors. On the receive side, a high-sensitivity PIN ROSA converts optical signals back to electrical. The module supports transmission up to 10 km on G.652 SMF, operates from a single +3.3 V supply, and consumes ≤ 3.5 W. Built-in DDM/DOM allows monitoring of optical and electrical parameters.
Form factor / standards: QSFP28 MSA; IEEE 802.3ba 100GBASE-LR4 compliant.
Data rate: 103.1 Gb/s aggregate (4×25.78125 Gb/s).
Reach: Up to 10 km over G.652 SMF.
Optical wavelengths (LAN-WDM grid): 1295.56, 1300.05, 1304.58, 1309.14 nm.
Connector: Duplex LC.
Power consumption: ≤ 3.5 W; typical supply current ~1.06 A.
Supply voltage: 3.135–3.465 V.
Operating case temp: 0 °C to 70 °C.
Diagnostics: DDM/DOM with monitoring of bias current, optical power, voltage, and temperature.
Compliance: RoHS-6; Class 1 Laser (EN 60825-1:2014; 21 CFR 1040.10/1040.11).
| Parameter | Value |
|---|---|
| Average launch power (each lane) | −6.0 to +4.5 dBm |
| Total average launch power | ≤ +10.5 dBm |
| OMA (each lane) | −3.0 to +4.5 dBm |
| Extinction ratio | ≥ 4 dB |
| TDP (per lane) | ≤ 2.2 dB |
| Receiver sensitivity (OMA, BER = 5×10⁻⁵) | ≤ −8.6 dBm |
| Stressed receiver sensitivity (OMA) | ≤ −6.5 dBm |
| Receiver damage threshold | ≤ +5.5 dBm |
| LOS assert / de-assert | −30 / −13 dBm |
| SMSR | ≥ 30 dB |
At Carritech, we pride ourselves on our exceptional service and commitment to meeting our customers’ needs. Our extensive range of SFP transceivers is designed to cater to various requirements, ensuring that you receive the best solutions for your projects. We understand the importance of timely delivery, and our efficient processes are geared towards providing you with the products you need as quickly as possible. Our dedicated team works tirelessly to ensure that your orders are processed and dispatched promptly, so you can rely on us for swift and reliable service.
We recognise that every project is unique, and our flexible approach allows us to adapt to your specific needs. Whether you require immediate delivery or have more complex requirements, we are here to support you every step of the way. Our commitment to customer satisfaction means that we go above and beyond to ensure that you receive your SFP transceivers in a timely manner, without compromising on quality. Trust Carritech to deliver the solutions you need, when you need them.
At Carritech Optics, we stand by the quality and reliability of our optical transceivers. That’s why we proudly offer a lifetime warranty on all products as a testament to our commitment to excellence and customer satisfaction.
Our lifetime warranty provides comprehensive coverage for the entire lifecycle of your optical transceivers, ensuring you experience complete peace of mind when choosing Carritech Optics. The warranty covers:
Should you ever need to make a warranty claim, our team is here to assist you. Simply contact our support team with your product details, and we’ll guide you through a quick and hassle-free process to resolve the issue.
Carritech Optics is dedicated to providing high-quality optical solutions that you can trust for the long haul. With our lifetime warranty, you can confidently invest in our products, knowing that we’re with you every step of the way.
Carritech’s Opticode is an advanced transceiver programming solution that gives you complete flexibility across your optical network. Designed to ensure seamless compatibility with a wide range of OEM systems, Opticode allows you to quickly reconfigure transceivers to meet your specific requirements. The result is greater control, reduced costs, and a more adaptable, future-proof infrastructure.
Intuitive interface allows you to reprogram transceivers quickly, without complex processes or specialist training.
Reprogram transceivers to work reliably across a wide range of OEM systems.
Gain the flexibility to adapt, optimise, and scale your optical infrastructure with confidence.
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