The QSFP-DD 400G ZR optical transceiver module adopts a 7nm coherent DSP ASIC, narrow linewidth tunable laser, and integrated coherent optical engine to deliver high-performance transmission solutions for customers. n the router-pluggable QSFP-DD format. Developed by the Optical Internetworking Forum (OIF) and released in March 2020, 400ZR is profile-optimized for high-density acce s and point-to-point DCI applications. It can deliver 400 Gb/s up to 40 km over a single dark fib r span without external. Tel Aviv, Israel – July 8, 2020 – PacketLight Networks, a leading provider of DWDM and optical fiber networking solutions, today announced the launch of the PL-4000 product line of modular, cost-effective, 400G muxponder and transponder for DCI, high capacity metro, and long haul applications. The. Polariton designs and delivers cutting-edge electro-optic modulators (EOMs) that push the boundaries of speed and performance. These power next-generation applications in communications, test & measurement, and quantum technologies by providing support in un-precedented regimes, enabling the next. The QSFP-DD ZR module supports amplified DWDM DCI transmission reach of 80km to 120km over SSMF, compliant with OIF-400ZR standard. The module also supports other fiber types, such as hollow-core fibers. Digital diagnostics functions are available via a TWI interface as CMIS specified. Each EML integrates a wavelength-locked DFB laser with a monolithic electro-absorption. The Cisco 400G QSFP-DD Ultra Long-Haul Coherent Optics Module enables 400G traffic anywhere over dense wavelength division multiplexing amplified networks, and is available in both C-band and L-band.