Refurb Squared Juniper QDD-400G-ZR-S Compatible 400GBASE DCO QSFP-DD DWDM Tunable Coherent 40km Unamplified DDM/DOM Duplex LC SMF Optical Transceiver Module

Description

Refurb Squared delivers fully tested, OEM-compatible optical transceivers, DWDM/CWDM systems, media converters and DAC/AOC cables — coded for Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet platforms, with lifetime warranty and fast global delivery.

RS Juniper QDD-400G-ZR-S Compatible QSFP-DD 400G ZR is a C-band, frequency-tunable coherent optical transceiver. It integrates a 7 nm coherent DSP ASIC with best-in-class ultra-narrow linewidth tunable lasers, high-speed modulators, and high-responsivity coherent receivers to deliver high performance using 400G DP-16QAM modulation. The module is designed for 400G DWDM data center interconnect (DCI) applications, supporting up to 40 km unamplified transmission without inline chromatic dispersion compensation. The QSFP-DD 400G ZR is widely deployed in hyperscale data centers to enable high-performance edge interconnection. It supports multiple network topologies, including point-to-point, star, and ring architectures.

Refurb Squared is brand of OEM-compatible optical networking products, including SFP, SFP+, QSFP+, QSFP28 and QSFP-DD transceivers, DWDM/CWDM systems, media converters, and DAC/AOC cables. Every module is 100% pre-shipment tested and coded for seamless compatibility with major platforms such as Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet — backed by a lifetime warranty, fast global delivery, and dedicated technical support for data centers, telecom operators, enterprise networks and system integrators worldwide.