MPO OM4 Cable Types

The MPO jumper cable offers an affordable solution compared to the effort-intensive process of field termination. It is optimized for dense fiber patching in data centers, where conserving space and reducing cable complexity are key priorities. In addition, the bend-insensitive fiber technology supports dependable, high-level performance, even when cables are routed through constrained or sharply bent areas.

MPO Om4 Advantage Specifications

Connector A：MPO (Pinless)
Connector B：MPO (Pinless)
Polish Type：PC to PC
Fiber Mode：OM4 50/125μm
Wavelength：850/1300nm
Fiber Count：8 Fibers
Polarity：Type B
Cable Outside Diameter (OD)：3.0mm
Cable Jacket：Plenum (OFNP)
Min. Bend Radius (Optical Fiber)：7.5mm
Min. Bend Radius (Fiber Cable)：20/10D (Dynamic/Static)
Connector Durability：500 times
Tensile Strength：90/180N (Long/Short Term)
Insertion Loss：0.35dB Max
Return Loss：≥25dB
Operating Temperature：-10 to 60°C (14 to 140℉)
Storage Temperature：-10 to 70°C (14 to 158℉)

MPO OM4 Patch Cord Polarity

The MPO 8-fiber Type B female connector is a high-density fiber optic interface widely used in parallel optics and structured cabling systems. It follows the Type B polarity (reversed configuration), meaning the fiber positions are mirrored from one end to the other.

For example:

• Fiber 1 → Fiber 12
• Fiber 2 → Fiber 11
• Fiber 3 → Fiber 10
• Fiber 4 → Fiber 9
• …
• Fiber 9 → Fiber 4
• Fiber 10 → Fiber 3
• Fiber 11 → Fiber 2
• Fiber 12 → Fiber 1

This reversed mapping ensures that transmit (Tx) fibers on one end connect correctly to receive (Rx) fibers on the opposite end, which is essential for high-speed parallel transmission.

As a female connector, it does not include guide pins and is designed to mate with a male MPO connector (with pins), ensuring precise alignment and stable optical performance.

OM4 MPO Fiber Key Features:

Connector type: MPO 8-fiber female (without pins)
Fiber count: 8 fibers in a single-row MT ferrule
Polarity standard: Type B (reversed / flipped mapping)
Ferrule design: High-precision MT ferrule for accurate fiber alignment
Cable jacket options: OFNR, OFNP, or LSZH, with standard color coding (yellow for OS2, aqua/violet for OM3/OM4, lime green for OM5)

Cabo MPO OM4 Advantage

• Correct Tx/Rx alignment: Reversed polarity ensures proper signal transmission
• High-density design: 8 fibers in one connector reduce cable bulk and save space
• Reliable mating: Female connector pairs with male (pinned) connector for precise alignment
• Scalable solution: Supports migration to higher-speed networks such as 40G and 100G

OM4 MPO Cable SPIN-LEAF connection method

OM4 MPO Cable Application

High-speed interconnection in data centers

It is used for direct connection of 40G/100G optical modules, supports 400G high-speed transmission, and can improve wiring density and transmission efficiency. For example, 400G QSFP-DD DR4 optical modules can be directly connected through MPO/MTP-8 multimode fiber jumpers. ‌

High-density wiring scenarios

In the backbone wiring of data centers, MTP/MPO trunk fiber jumpers are used in conjunction with adapter modules to achieve interconnection and cross-connection between devices, saving 45% of wiring space. Branch jumpers are used to connect devices with different rates (such as 10G and 40/100G devices). ‌

100G/400G transmission expansion

Supports branch connection of 100G QSFP28 optical modules to 4 25G SFP28 optical modules, or interconnection of 100G CFP optical modules to another CFP. ‌

Fiber-to-Building Applications

It is used for fiber-to-the-building (FTTB) wiring to meet the needs of high-density fiber access.

OM4 MPO Test Series

OM4 MPO MTP Polarity Test Process

‌End face cleaning: Use special equipment to remove end face contaminants to avoid affecting the test accuracy. ‌
Morphology detection: Analyze the end face microstructure through 3D imaging technology to detect surface roughness, scratches and other defects. ‌
Insertion loss test: Measure the contact loss between the fiber end face and the connector ferrule to evaluate the signal transmission quality. ‌
Polarity verification: Confirm the correspondence between the number of fiber cores and the connector guide hole to prevent communication failure caused by wrong connection. ‌

Fibra MPO OM4 Test Key Indicators

Cleaning efficiency: It must reach more than 98% to ensure that there are no residual stains on the end face. ‌
‌Detection accuracy: The resolution of 3D morphology detection must be less than 1.5μ, and the insertion loss error must be controlled within 0.3dB. ‌
Test time: It takes about 10 seconds to detect a single fiber core of a 12-core MPO jumper, and the overall test takes about 2 minutes.

OM4 MPOw Test Common Problems

Pollution sensitivity: Tiny particles on the end face will cause increased loss, and non-contact cleaning methods are required to protect the end face. ‌ ‌