Om3 Multimode Fiber Optic Cabling

OM3 multimode fiber is a laser-optimized 50 µm fiber designed for high-speed, short-to-medium distance networks, supporting 10G Ethernet up to 300 meters and higher-speed links at moderate distances.Key Specifications

• Core Diameter: 50 micrometers, allowing multiple light modes to propagate simultaneously .
• Bandwidth: Up to 2000 MHz·km, optimized for VCSEL (Vertical-Cavity Surface-Emitting Laser) sources at 850 nm .
• Jacket Color: Aqua, distinguishing it from older OM1/OM2 fibers (orange) and OM5 (lime green), .
• Supported Data Rates: 10G Ethernet up to 300 meters, 40G and 100G Ethernet up to 100 meters .
• Compatibility: Backward compatible with OM1 and OM2 fibers, allowing integration into existing multimode networks .

Advantages

• Cost-Effective: Uses lower-cost VCSEL transceivers compared to single-mode fiber lasers .
• High Performance: Optimized for high-bandwidth applications in data centers, LANs, and storage area networks .
• Ease of Installation: Larger core diameter tolerates more alignment variance, simplifying deployment and maintenance .

Applications

OM3 fiber is widely used in:

• Data Centers: For 10G, 25G, and moderate-distance 40G/100G links .
• Enterprise Networks: Connecting buildings or floors within a campus .
• Storage Area Networks (SANs): High-speed interconnects between servers and storage devices .

Comparison with Other Multimode Fibers

• OM1: 62.5 µm core, LED-based, supports 10G only up to 33 meters .
• OM2: 50 µm core, LED-based, supports 10G up to 82 meters .
• OM4: Enhanced laser-optimized 50 µm fiber, supports 10G up to 550 meters and higher-speed links at longer distances .
• OM5: Wideband multimode fiber (lime green), supports short-wavelength division multiplexing (SWDM) for 100G+ applications . OM3 remains a cost-effective choice for most 10G deployments and moderate-speed 40G/100G links, making it suitable for current enterprise and data center networks without the higher cost of OM4 or OM5.