Wavelength of Gigabit Om3 Fiber

OM3 multimode fiber for Gigabit Ethernet operates at a wavelength of 850 nm using VCSEL lasers.OM3 fiber is a laser-optimized 50 µm multimode fiber designed for high-speed data transmission in data centers and LAN environments. For Gigabit Ethernet (1 GbE) and 10 Gigabit Ethernet (10 GbE), OM3 fiber typically uses 850 nm vertical-cavity surface-emitting lasers (VCSELs) as the light source, which provides efficient, cost-effective, and reliable transmission over short to medium distances .Key Characteristics of OM3 FiberCore Diameter: 50 µm, allowing multiple light modes to propagate while minimizing modal dispersion .Maximum Distance for 1 GbE: OM3 can support Gigabit Ethernet over distances up to 300 meters .Laser Type: Optimized for VCSELs at 850 nm, which ensures high bandwidth and low attenuation .Bandwidth: OM3 has a modal bandwidth of 2000 MHz·km at 850 nm, sufficient for Gigabit and 10 Gigabit Ethernet applications .Jacket Color: Typically aqua, distinguishing it from older OM1/OM2 fibers .Comparison with OM4 and OM5OM4: Also uses 850 nm VCSELs but has higher modal bandwidth (4700 MHz·km), allowing longer distances (up to 400 m for 10 GbE) .OM5: Supports short wavelength division multiplexing (SWDM) across 850–940 nm, but for standard Gigabit Ethernet, the 850 nm wavelength is still used . In summary, for Gigabit Ethernet over OM3 fiber, the standard operating wavelength is 850 nm, which is compatible with VCSEL-based transceivers and supports reliable high-speed data transmission within typical data center distances .