100GBASE-ZR4 QSFP28 1310nm 80km DOM Duplex LC/UPC SMF Optical Transceiver Module

100GBASE-ZR4 QSFP28 80km

PN: CT-QSFP28-ZR4

100G QSFP28 1310NM 80KM 80 km QSFP28 ZR4 optical transceiver for 100GBASE-ZR4 Ethernet over single-mode fiber, supporting 4×25G LAN-WDM optics with duplex LC interface and integrated digital diagnostics monitoring.
Craig ***** - Cardiff, United Kingdom
26/09/2025
A pleasure to work with and a reliable supplier!
John ***** - Egham, United Kingdom
12/09/2025
Always enjoy working with Carritech. They makes things easy.
Marcin ***** - Malsch, Germany
15/05/2025
Reliable supplier, always a pleasure to work with
Liliana ***** - Madrid, Spain
14/05/2025
Fast and friendly service, personalized support throughout
Marcus ***** - Bristol, United Kingdom
13/05/2025
A pleasure to deal with. Always rely on Carritech.
Jagielski ***** - Poznan, Poland
09/05/2025
Always good to do business with
Peter ***** - Eindhoven, Netherlands
07/05/2025
Always attentive and professional, TOP!
Grégory ***** - Mauguio, France
06/05/2025
Commercial efficace, société fiable
Zach ***** - Lakeland, Florida
01/05/2025
Great company to work with. Very flexible and reliable supplier.
Chloe ***** - Berkshire, United Kingdom
24/02/2025
Always a pleasure working with Christian Quality packaging!
Marcus ***** - Bristol, United Kingdom
03/03/2025
Fastest shipments I've seen in years. Credit to the industry.
Alfred ***** - Vienna, Austria
06/08/2018
Always a pleasure to work with whole Carritech Team!

Fast Worldwide Delivery

We ship to over 100 countries, ensuring your parts reach you quickly and reliably wherever your business operates.

Extensive Global Inventory

Thousands of optical transceivers in stock and ready to ship, helping you keep your networks running without delay.

Fully Customisable Labelling

Customise labels tailored to your business with flexible designs, branding, and specific information.

Product Specifications

The 100Gbps QSFP28 ZR4 Optical Transceiver is designed for ultra-long-distance communication over single-mode fiber (SMF) up to 80 kilometers. Supporting data rates of 103.125Gbps, this module operates with a 4-channel LAN WDM architecture, multiplexing and demultiplexing four lanes of 25Gbps signals. It features cooled EML lasers for precise wavelength alignment and SOA+PIN photodetectors for enhanced signal reception. Fully compliant with QSFP28 MSA, IEEE 802.3ba standards, and ITU-T G.959.1, it is ideal for applications in 100G Ethernet and telecom networks.

Operating on a single +3.3V power supply with a maximum power consumption of 6.5W, the transceiver is energy-efficient and reliable across a temperature range of 0°C to 70°C. It features a hot-pluggable QSFP28 form factor with an LC duplex connector for seamless integration. Advanced digital diagnostic monitoring supports real-time tracking of key performance metrics like temperature, voltage, optical power, and bias current. With RoHS compliance and robust safety features, this transceiver is a dependable solution for high-speed, long-distance optical communication in data centers and metro networks.

The CT-QSFP28-ZR4 is a QSFP28 form-factor optical transceiver designed for 100GBASE-ZR4 Ethernet over long-distance single-mode fiber. It integrates four 25.78125 Gb/s electrical lanes, multiplexed into four LAN-WDM optical channels (1295–1310 nm). The module supports up to 80 km transmission on G.652 SMF with FEC, uses a duplex LC connector, and operates from a single +3.3 V power supply with maximum power consumption of 6.5 W. Built-in DDM/DOM provides monitoring of optical power, temperature, voltage, and bias current.

Key specifications

  • Form factor / standards: QSFP28 MSA compliant; hot-pluggable.
  • Data rate: 103.125 Gb/s aggregate (4×25.78125 Gb/s).
  • Reach: Up to 80 km over G.652 SMF (with FEC).
  • Optical wavelengths (LAN-WDM grid): 1294.53, 1299.02, 1303.54, 1308.09 nm.
  • Connector: Duplex LC.
  • Power consumption: Up to 6.5 W; supply current ~1.88 A.
  • Supply voltage: 3.135–3.465 V.
  • Operating case temp: 0 °C to 70 °C.
  • Diagnostics: Digital diagnostics monitoring (DDM/DOM).
  • Compliance: RoHS 2.0; safety EN/IEC 60825-1 & 60825-2; EMC Directive 2014/30/EU Class B.

Optical characteristics (per lane unless noted)

Parameter Value
Average launch power (each lane) +2 to +6.5 dBm
Total average launch power +8 to +12.5 dBm
Extinction ratio ≥ 6 dB
Receiver sensitivity ≤ −28 dBm
Receiver input range −28 to −3.5 dBm
Receiver damage threshold ≤ +6.5 dBm
LOS assert / de-assert −40 / −29 dBm
Side-mode suppression ratio (SMSR) ≥ 30 dB

Applications

  • 100GBASE-ZR4 long-distance Ethernet links up to 80 km on SMF.
  • Telecom backbone and metro aggregation networks requiring extended reach optics.
  • Carrier-grade optical transport systems using FEC for reliable high-speed data transmission.

Features

  • QSFP28 hot-pluggable ZR4 design with LAN-WDM EML transmitters and SOA-PIN receivers.
  • Up to 80 km reach on standard SMF with FEC.
  • Built-in DDM/DOM for monitoring temperature, voltage, bias current, and optical power.
  • Low power consumption (≤ 6.5 W) relative to long-haul optics.
  • Standard duplex LC interface for easy deployment.
  • RoHS 2.0 compliant with strong EMC and ESD protection.

Delivery

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.

Warranty

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.

What Does Our Lifetime Warranty Cover?

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:

  • Defects in Materials and Workmanship: If your product experiences any issues related to manufacturing or materials, we’ll repair or replace it free of charge.
  • Performance Assurance: Our optical transceivers are rigorously tested to meet industry standards, and we guarantee they’ll perform as expected in your network environment.
Easy Claims Process

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.

Your Network’s Performance, Guaranteed

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.

Datasheet Download

Performance Testing

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.

Reprogram your transceivers with speed, simplicity, and confidence.

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.

Craig ***** - Cardiff, United Kingdom
26/09/2025
A pleasure to work with and a reliable supplier!
John ***** - Egham, United Kingdom
12/09/2025
Always enjoy working with Carritech. They makes things easy.
Marcin ***** - Malsch, Germany
15/05/2025
Reliable supplier, always a pleasure to work with
Liliana ***** - Madrid, Spain
14/05/2025
Fast and friendly service, personalized support throughout
Marcus ***** - Bristol, United Kingdom
13/05/2025
A pleasure to deal with. Always rely on Carritech.
Jagielski ***** - Poznan, Poland
09/05/2025
Always good to do business with
Peter ***** - Eindhoven, Netherlands
07/05/2025
Always attentive and professional, TOP!
Grégory ***** - Mauguio, France
06/05/2025
Commercial efficace, société fiable
Zach ***** - Lakeland, Florida
01/05/2025
Great company to work with. Very flexible and reliable supplier.
Chloe ***** - Berkshire, United Kingdom
24/02/2025
Always a pleasure working with Christian Quality packaging!
Marcus ***** - Bristol, United Kingdom
03/03/2025
Fastest shipments I've seen in years. Credit to the industry.
Alfred ***** - Vienna, Austria
06/08/2018
Always a pleasure to work with whole Carritech Team!

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100GBASE-ZR4 QSFP28 80km

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