The 100G ZR QSFP28 DCO transceiver supports 100G transmission over distances up to 120km (dispersion limited, optionally extendable to 300km) for edge network applications. On the host side, the module can accommodate IEEE 100GE Ethernet or ITU-T OTN OTU4 signals. SAXONBURG, PA, September 26, 2025 (GLOBE NEWSWIRE) – Coherent Corp. (NYSE: COHR), a global leader in photonics, announces the industry's first QSFP28 Dual Laser 100G ZR solution that enables broadband providers to efficiently maximize capacity on existing fiber infrastructure. Supporting 100G / OTU4 capacities, these modules are idea for general purpose access and metro applications, or directly integrated into router line cards. In this guide, we'll demystify this critical piece of optical technology, explore its inner workings, and show you how to leverage it for your network's success. The. The global Dense Wavelength Division Multiplexing (DWDM) Compact Module Market is experiencing steady growth driven by rising demand for high-capacity data transmission, expansion of 5G networks, and the increasing adoption of cloud services. Valued at USD 342 million in 2024, the market is. ut having to tear out existing equipment.