200G QSFP-DD to 4×50G SFP56 Active Optical Breakout Cable: 200G-AOC-QSFP56-4SFP56

Our EDGEOPTIC 200G-AOC-QSFP56-4xSFP56 is a multi-vendor compatible 200G QSFP56 to 4x 50G SFP56 active optical breakout cable designed for ultra-high-performance 50/200 Gigabit Ethernet aggregation applications requiring extended reach beyond copper cable limitations. The 200G-AOC-QSFP56-4xSFP56 features a 1-to-4 breakout configuration with a single QSFP56 connector on the 200G host end and four independent SFP56 connectors on the multi-port end, utilizing embedded parallel multimode fiber optic technology to deliver reliable high-bandwidth connectivity up to 100 meters for 200G-to-50G interconnects between high-density spine switches, ToR aggregation, and 50G-equipped servers, NICs, and storage endpoints.

The cable routes each of the four 53.125 Gbps PAM-4 lanes on the 200GBASE-SR4 QSFP56 host port to a dedicated 50GBASE-SR SFP56 endpoint, providing a clean 4:1 fan-out from a single 200G port to four independent 50G channels. For Ethernet deployments, the cable enables a 200GbE QSFP56 switch port to terminate into four 50GbE SFP56 endpoints per IEEE 802.3cd 50GBASE-SR, maximizing port utilization and significantly reducing per-port cost when serving 50G server fleets. The cable also supports operation across legacy IEEE 802.3bm 100GBASE-SR4 and IEEE 802.3by 25GBASE-SR endpoints for mixed-rate deployments and migration scenarios.

The 200G-AOC-QSFP56-4xSFP56 operates at 850nm wavelength, utilizing a 4-channel VCSEL (Vertical-Cavity Surface-Emitting Laser) array for transmission and a 4-channel PIN photodiode array for receiving on the 200G end, with single-channel VCSEL and PIN devices on each 50G SFP56 endpoint. The embedded multimode fiber supports distances up to 70 meters over OM3 fiber and extends to 100 meters over OM4 fiber, providing deployment flexibility based on available infrastructure. Because the optical fiber is permanently terminated within the cable assembly, there are no exposed fiber connectors to clean or protect, simplifying installation and reducing maintenance requirements compared to traditional optical patch cables with separate transceivers.

The cable incorporates DSP-based PAM-4 signal processing, enabling clean transmission at 53.125 Gbps per lane with built-in equalization and error mitigation across all four optical channels. Active optical cables offer inherent immunity to electromagnetic interference, making them ideal for environments with significant electrical noise. The lightweight and flexible construction allows for easier cable routing in congested pathways and improved airflow compared to copper bundles, which is particularly valuable in high-density 4-way breakout deployments where thermal management is critical.

The cable operates from a +3.3V single power supply with maximum power consumption of 5.5W on the QSFP56 end and 3W on each SFP56 end. The electrical interface conforms to QSFP56 MSA and SFP56 MSA specifications, ensuring broad compatibility with standard QSFP56 and SFP56 host systems from multiple equipment vendors. Our 200G QSFP56 to 4x50G SFP56 AOC cables can be encoded for compatibility with over 80 different equipment brands.

The cable incorporates built-in DDM/DOM (Digital Diagnostic Monitoring) functionality, providing real-time diagnostic data including transmitted and received optical power levels, module temperature, bias current, and supply voltage through the MSA-compatible management interface. Standards compliance includes IEEE 802.3cd 200GBASE-SR4 and 50GBASE-SR specifications, alongside IEEE 802.3bm 100GBASE-SR4 and IEEE 802.3by 25GBASE-SR for backward-compatible operation. The cable supports hot pluggability and operates within an extended -5 to 70°C case temperature range with an MTBF rating of 1,000,000 hours, delivering long-term reliability for mission-critical 200G breakout infrastructure deployments.

Our 200G QSFP56 to 4x50G SFP56 active optical cable is CE/RoHS certified and compliant with product safety standards. Because our focus is providing top quality service, we perform comprehensive quality checks before delivery including optical parameter measurements, connector inspection tests, and QSFP56/SFP56 EEPROM memory data validation.