1. Product Overview

The MPO16 to 2x MPO (8-Core utilized) OM4 Multimode Breakout Cable is a high-density assembly that transitions a single MPO-16 interface into two separate MPO branches. This cable is critical for breaking out 400G/800G signals (utilizing 16 fibers) into two 4-channel (8-fiber) links. Featuring Elite Low Loss (LL) connectors and laser-optimized OM4 fiber, it meets the stringent power budget requirements of PAM4 signaling.

2. General Specifications

3. Optical Performance

4. Mechanical Characteristics

• Operating Temperature: -20°C to +70°C

• Storage Temperature: -40°C to +85°C

• Tensile Strength: 100N (Short-term)

• Minimum Bend Radius: 7.5mm (Bend-Insensitive OM4)

• Durability: >500 mating cycles

Product Applications

The MPO-16 to 2x MPO breakout cable is a strategic asset for next-generation network scaling:

1. 400G/800G to 2x 200G/400G Breakout

This is the primary application for the MPO-16 interface. A single 400G-SR8 or 800G-SR8 transceiver uses 16 fibers (8 transmit, 8 receive). This cable allows that high-capacity port to be split into two separate MPO-based channels, enabling the connection of one core switch port to two secondary switches or high-speed AI accelerators.

2. High-Density AI Cluster Connectivity

Artificial Intelligence (AI) and Machine Learning (ML) workloads require massive parallel throughput. By using MPO-16 trunks and branching out to MPO-8/12 interfaces at the server level, data centers can achieve the extreme density required for GPU-to-GPU communication while maintaining a clean, manageable cabling plant.

3. Transitioning to 16-Fiber Architecture

As industry standards move from 12-fiber to 16-fiber layouts for higher bandwidth, this cable acts as the essential bridge. It allows organizations to adopt the latest MPO-16 transceivers while still utilizing their existing MPO-8/12 patch panels or distribution hardware.

4. Maximizing Port Utilization in Spine-Leaf Fabrics

In a Spine-Leaf architecture, the 16-core breakout maximizes the "fan-out" capability of the spine switch. It effectively doubles the number of leaf switches that can be served by a single spine port, reducing the total hardware footprint and overall cost per port.

5. Low-Loss Performance for PAM4 Signaling

Modern 400G/800G networks use PAM4 modulation, which is highly sensitive to signal degradation. The Elite Low Loss (LL) connectors on this cable are non-negotiable; they provide the necessary optical margin to ensure low Bit Error Rates (BER) and high link reliability across multiple patch points.

Professional Recommendation:

When deploying MPO-16 systems, ensure that the APC (Angled Physical Contact) polish is used if your transceivers require it to minimize back-reflection. Using an incorrect polish type can lead to permanent damage to the transceiver's internal laser.