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 C
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 C female connector is a high-density fiber optic interface used in structured cabling systems, especially for duplex and parallel optical applications. It follows the Type C polarity (pairwise crossover), where adjacent fibers are swapped in pairs to ensure correct alignment of transmit (Tx) and receive (Rx) signals.

For example:

• Fiber 1 ↔ Fiber 2
• Fiber 2 ↔ Fiber 1
• Fiber 3 ↔ Fiber 4
• Fiber 4 ↔ Fiber 3
• ……..
• Fiber 9 ↔ Fiber 10
• Fiber 10 ↔ Fiber 9
• Fiber 11 ↔ Fiber 12
• Fiber 12 ↔ Fiber 11

This pairwise flipping ensures that each Tx fiber is properly connected to the corresponding Rx fiber without requiring additional polarity conversion.

As a female connector, it does not include guide pins and is designed to mate with a male MPO connector (with pins), ensuring accurate fiber 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 C (pairwise crossover mapping)
Ferrule design: Precision MT ferrule for low insertion loss and high repeatability
Cable jacket options: OFNR, OFNP, or LSZH, with standard fiber color coding (yellow for OS2, aqua/violet for OM3/OM4, lime green for OM5)

Cabo MPO OM4 Advantage

• Correct Tx/Rx mapping: Pairwise crossover ensures proper signal alignment
• High-density connectivity: 8 fibers in one compact interface reduce cable congestion
• Reliable mating: Female connector pairs with male (pinned) connector for precise alignment
• Flexible deployment: Suitable for duplex and parallel optics environments

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. ‌ ‌