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The 400Gbps QSFP-DD DR4 Optical Transceiver is a high-performance module designed for short-range communication over single-mode fiber (SMF) up to 500 meters. This transceiver operates on a PAM4 modulation scheme with an aggregate bit rate of 425Gbps, utilizing 8×53.125Gbps electrical lanes (400GAUI-8) and converting these into four 106.25Gbps optical channels for transmission. It features a 1310nm laser for data transmission and a PIN receiver for signal reception. Fully compliant with QSFP-DD MSA, IEEE 802.3bs standards, and EU Directive 2015/863/EU, this module is ideal for applications like 400GBASE-DR4 Ethernet and data center networking.
Operating on a single +3.3V power supply, the transceiver consumes a maximum power of 12W and is designed to function reliably within a temperature range of 0°C to 70°C. The QSFP-DD form factor supports digital diagnostic monitoring (DDM) via an I2C interface, allowing real-time tracking of operational parameters such as temperature, voltage, and optical power. Equipped with an MPO optical interface, the transceiver delivers robust performance, making it a dependable and efficient choice for high-speed, short-distance optical communication in modern networking environments.
All of our optical transceivers come with a lifetime warranty.
The CT-400G-QDD-DR4 is a QSFP-DD optical transceiver module optimized for 400G data center interconnects and cloud applications. It provides 400 Gb/s aggregate bandwidth using eight 53.125 Gb/s PAM4 electrical lanes (400GAUI-8) mapped into 4 optical channels at 1310 nm. The module supports transmission distances up to 500 m over SMF with MPO connector, operates on a single +3.3 V power supply, and consumes ≤ 12 W. Integrated digital diagnostics monitoring (DDM) is accessible via I²C.
| Parameter | Value |
|---|---|
| Signaling rate | 106.25 Gb/s PAM4 |
| TX avg launch power | −2.9 to +4 dBm |
| OMA per lane | −0.8 to +4.2 dBm |
| Extinction ratio | ≥ 3.5 dB |
| TDECQ | ≤ 3.4 dB |
| RX sensitivity (OMA) | ≤ −4.4 dBm |
| Stressed RX sensitivity (OMA) | ≤ −1.9 dBm |
| RX avg input power | −5.9 to +4 dBm |
| RX damage threshold | ≤ +5 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.
At Carritech Optics, every product we supply undergoes a meticulous testing process designed to guarantee exceptional quality, reliability, and consistency. Our manufacturer operates within a professional laboratory environment, where advanced testing equipment and industry-standard procedures are used to carefully evaluate each item.
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.
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