8 Fiber MPO to 4 x LC Duplex Singlemode Breakout Cable | 40G QSFP+ PSM4 Breakout Harness (G.657.A1)

8 Fiber MPO to 4 x LC Duplex Singlemode Breakout Cable | 40G QSFP+ PSM4 Breakout Harness (G.657.A1)

Product Overview

Engineered for 40G QSFP+ PSM4 long-range parallel optics. This high-performance 8-fiber MPO to 4 x LC Duplex breakout cable provides a low-loss, high-efficiency pathway to split a 40G signal into four discrete 10G-LR channels. It is the ideal solution for high-density interconnects between racks and devices in modern data centers.

Features

• PREMIUM SM PERFORMANCE: Built with G.657.A1 Bend-Insensitive Singlemode Fiber, designed for long-reach applications (up to 10km) and complex cable routing with minimal signal loss.
• ULTRA-LOW LOSS: Features elite MPO-APC (<0.35dB) and LC-UPC (<0.2dB) terminations for superior optical performance and network reliability.
• DATA CENTER GRADE: LSZH (Low Smoke Zero Halogen) jacket is RoHS and IEC compliant, ensuring fire safety in high-density cabling environments.
• PRECISE POLARITY: Factory-terminated to Polarity B (Type B), ensuring the QSFP+ (Tx) channels correctly map to the SFP+ (Rx) channels for plug-and-play deployment.
• 40G OPTIMIZED: Perfectly matches 40G QSFP+ PSM4 transceivers, seamlessly converting 8 parallel fibers (4x Tx, 4x Rx) into 4 x 10G LC links.

What is a 40G PSM4 Breakout?

This cable is built specifically for the PSM4 (Parallel Single Mode 4-lane) application. PSM4 uses 8 fibers within the MPO connector to create four independent, parallel singlemode links (4 for transmitting, 4 for receiving). This breakout cable "fans out" these 8 fibers into 4 industry-standard LC duplex connectors, allowing your 40G port to communicate with four separate 10G devices simultaneously, dramatically increasing port utilization and lowering total cost.

Specifications

Applications

• 40G to 10G Interconnects: Connect a 40G QSFP+ PSM4 port on a core switch to four 10G SFP+ LR/ER ports on access switches or servers.
• High-Density Backbone: Implement structured cabling between Main Distribution Areas and Equipment Distribution Areas (EDA).
• Direct Equipment-to-Equipment: High-bandwidth direct connections between routers and switches within the same or adjacent racks.
• Telecom Rooms: Suitable for carrier-grade applications requiring long reach and high reliability.

Our Commitment to Quality

Every cable is 100% factory-tested to exceed industry standards before it ships.

• 3D Interferometer Tested: Ensures perfect MPO and LC end-face geometry (radius of curvature, apex offset, etc.).
• End-Face Inspection: Guarantees all optical surfaces are free of scratches and contaminants.
• IL/RL Tested: Every fiber core is individually tested, and a full test report is available.

Need a Different Configuration? We Can Build It.

We offer complete customization services, including:

• Custom lengths
• MPO Gender (Male/Pinned or Female/Unpinned)
• Different Polarities (Type A, B, or C)
• Custom fan-out staggering or lengths
• Other connector types