As global data demand continues to expand, high-capacity and long-distance optical solutions are becoming indispensable for modern networks. The 200G QSFP-DD ZR4 optical transceiver stands out as a next-generation product that delivers both speed and distance — achieving up to 80 kilometers of transmission over single-mode fiber (SMF) while maintaining outstanding reliability and energy efficiency.

Operating at a 1310 nm wavelength, the 200G QSFP-DD ZR4 uses four parallel optical channels, each carrying 50 Gbps PAM4 signals, to deliver an aggregated 200 Gbps data rate. It is fully compliant with the QSFP-DD MSA standard, making it hot-pluggable and compatible with major network equipment vendors. This design allows seamless upgrades for data centers, telecom operators, and cloud infrastructure providers who need to push high-speed data farther than ever before.

One of the defining advantages of the ZR4 module is its ultra-long transmission reach of 80km, making it ideal for data center interconnect (DCI), metro network backhaul, and regional enterprise connectivity. Unlike short-reach modules that rely on repeaters or amplifiers, the ZR4 can maintain signal integrity across vast fiber spans using advanced modulation techniques and built-in digital diagnostic monitoring (DDM/DOM). This ensures real-time visibility into temperature, optical power, and performance — helping network administrators maintain stability across critical links.

The 200G QSFP-DD ZR4 uses a duplex LC connector and a 2-fiber SMF interface, simplifying deployment and reducing cabling complexity. Its compact form factor enables high port density in modern switches and routers, helping network engineers scale capacity without increasing footprint. Furthermore, with 3-year warranty support and excellent durability, it represents a balance between long-term reliability and cost efficiency.

Beyond the hardware, the ZR4 supports hot-pluggable functionality, allowing fast replacement or upgrades without network downtime — a key benefit for large-scale operations that demand non-stop performance. Combined with its low power consumption and excellent interoperability, it has become a preferred choice for operators upgrading from 100G to 200G or even preparing for future 400G architectures.

In short, the 200G QSFP-DD ZR4 offers a strategic blend of high capacity, long reach, and operational simplicity. Whether used in metro aggregation, long-distance DCI, or large enterprise networks, it represents a reliable step forward in optical transmission evolution.

FAQ

Q1: What is the maximum transmission distance of the 200G QSFP-DD ZR4?
A1: The module supports up to 80 kilometers over single-mode fiber (SMF).

Q2: What wavelength does the ZR4 module operate on?
A2: It operates at a 1310 nm wavelength, suitable for long-distance transmission with low dispersion.

Q3: Does the module support DDM/DOM monitoring?
A3: Yes, it supports digital diagnostic monitoring, allowing users to check real-time operating parameters such as temperature and optical power.

Q4: What type of connector does it use?
A4: It features a duplex LC connector and uses two fibers for transmission.

Q5: Is it hot-pluggable?
A5: Yes, the ZR4 module is fully hot-pluggable, which means it can be replaced or installed without shutting down the system.

Q6: What are the ideal applications for the 200G ZR4 module?
A6: It is perfect for data center interconnects, metro core networks, telecom aggregation, and long-haul enterprise links.