# 62.5/125 Fiber Patch Cable Specifications and Applications

## Introduction to 62.5/125 Fiber Patch Cables

The 62.5/125 fiber patch cable is a type of multimode optical fiber cable that has been widely used in various networking applications. The numbers 62.5/125 refer to the fiber’s core and cladding diameters in micrometers, respectively. These cables have played a significant role in local area networks (LANs) and other short-distance communication systems for decades.

## Technical Specifications

### Physical Characteristics

The 62.5/125 fiber patch cable features a 62.5-micron core diameter and a 125-micron cladding diameter. This specific size combination was standardized as OM1 fiber by the ISO/IEC 11801 standard. The cable typically has an orange-colored jacket for easy identification in network installations.

### Optical Performance

Key optical specifications include:

• Bandwidth: 160/500 MHz·km at 850/1300 nm wavelengths
• Attenuation: ≤3.5 dB/km at 850 nm, ≤1.5 dB/km at 1300 nm
• Numerical Aperture: 0.275 ± 0.015

## Common Connector Types

62.5/125 fiber patch cables are available with various connector options to suit different networking needs:

Standard Connectors

• SC (Subscriber Connector)
• LC (Lucent Connector)
• ST (Straight Tip)
• FC (Ferrule Connector)

Specialized Connectors

• MTRJ
• E2000
• MU

## Applications of 62.5/125 Fiber Patch Cables

### Traditional Networking

These cables were originally designed for:

• Ethernet networks (10BASE-FL, 100BASE-FX)
• Fiber Distributed Data Interface (FDDI)
• Token Ring networks

### Modern Uses

While newer fiber standards have emerged, 62.5/125 cables still find applications in:

• Legacy system maintenance
• Short-distance interconnects
• Industrial control systems
• Security and surveillance systems

## Comparison with Other Multimode Fibers

62.5/125 vs. 50/125 Fibers

The main differences between these two multimode fiber types include:

## Installation Considerations

When deploying 62.5/125 fiber patch cables, consider:

• Maximum recommended distance (typically 300m for Fast Ethernet)
• Proper bend radius to avoid signal loss
• Connector cleanliness for optimal performance
• Compatibility with existing network equipment

## Future Outlook

While 62.5/125 fiber patch cables are