Differences between OM1, OM2, OM3, OM4 Multimode Fibers
Differences between OM1, OM2, OM3, OM4 Multimode Fibers
Multimode fiber optics are essential in network infrastructure, particularly within data centers, where they facilitate high-speed data transmission over short distances. The evolution from OM1 to OM4 has led to significant improvements in bandwidth, speed, and reach. Here’s a comparative look at the technical differences between these fiber types.
#OM1 Fiber
– Core Diameter: 62.5 microns
– Bandwidth: 200 MHz·km at 850 nm
– Maximum Distance:
1 Gb/s up to 275 meters
– Light Source Compatibility: Designed for LED light sources
– Applications: Suitable for legacy systems, low-speed Ethernet LANs
– Cost Efficiency: Generally the least expensive, ideal for budget-conscious applications with lower data demands
#OM2 Fiber
• Core Diameter: 50 microns
• Bandwidth: 500 MHz·km at 850 nm
• Maximum Distance:
1 Gb/s up to 550 meters
• Light Source Compatibility: Optimized for laser-based VCSELs
• Applications: Better suited for Gigabit Ethernet applications and moderate-speed networks
• Cost Efficiency: Higher than OM1 but still affordable; a good option for networks with moderate performance requirements
#OM3 Fiber
– Core Diameter: 50 microns
– Bandwidth: 2000 MHz·km at 850 nm
– Maximum Distance:
10 Gb/s up to 300 meters
Can support 40 Gb/s over shorter distances
– Light Source Compatibility: Laser-optimized for VCSELs, ensuring high efficiency
– Applications: Ideal for data centers requiring 10G Ethernet speeds and up to 40G for short-reach applications
– Cost Efficiency: Increased cost relative to OM1 and OM2 but justified by enhanced performance; widely used in modern data centers
#OM4 Fiber
• Core Diameter: 50 microns
• Bandwidth: 4700 MHz·km at 850 nm
• Maximum Distance:
10 Gb/s up to 550 meters
40 Gb/s and 100 Gb/s up to 150 meters
• Light Source Compatibility: Specifically optimized for laser light, ensuring high data throughput and lower latency
• Applications: Best suited for high-density data centers, supporting 100G and ultra-high-speed networks with short link distances
• Cost Efficiency: Higher initial investment, offering significant ROI for large-scale, high-performance infrastructure
Each OM fiber generation is designed to meet specific network demands, from OM1 for basic, low-speed applications to OM4 for next-gen, high-speed data centers
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Source: LinkedIn
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