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Multimode Specs

GigaGuide™ 50

GigaGuide™ 62.5 XL

62.5/125µm

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GigaGuide 62.5 XL
Optical Fiber Specifications

GigaGuide 62.6 XL Spool product fact sheet

key specifications

Core diameter: 62.5 ± 3 micron
Clad diameter: 125 ± 1 micron
Attenuation: < 2.9 dB/km at 850 nm; and < 0.7 dB/km at 1300 nm

Allows for Gigabit Ethernet operation up to 500 meters at 850 nm and 1000 meters at 1300 nm

Fully compatible with standard 62.5/125 graded index multimode optical fiber


Longer Distances for Gigabit Ethernet Systems

GigaGuide 62.5 XL multimode optical fiber provides high performance over longer link lengths for Gigabit Ethernet and other high-speed transmission protocols. With the same outstanding quality and easy installation of Lucent's standard multimode fiber, GigaGuide 62.5 XL is fully compatible with your installed base of 62.5/125 multimode optical fiber.

Designed to carry the high bandwidth required by today's network users, GigaGuide 62.5 XL provides transmission distances up to 500 meters at 850 nm and up to 1000 meters at 1300 nm, and meets or exceeds all performance requirements for IEEE 802.3z Gigabit Ethernet standards.

Full Compatibility with Today's Networks

Today's traffic-intensive networks need the transmission speeds offered by Gigabit Ethernet architecture. To maximize the potential of this high-speed protocol, Lucent designed GigaGuide 62.5 XL specifically to provide long link lengths for 1 Gb/s transmission.

Laser-certified for use in Gigabit Ethernet applications, GigaGuide 62.5 XL offers outstanding performance with both conventional edge emitting lasers and Vertical Cavity Surface Emitting Lasers (VCSELs). GigaGuide is also fully compatible with all standard fiber optic network protocols including FDDI, Fast Ethernet and 155 Mb/s ATM, making it an excellent choice for new installations that may be upgraded to Gigabit Ethernet in the future.

Advanced Processes, Stringent Quality Control

GigaGuide 62.5 XL is specially designed for ease of installation. A tight (± 1 micron) specification on cladding diameter minimizes loss due to connectorizing. Lucent protects the fiber by using a dual-layered, UV-cured acrylate coating system. This coating provides excellent protection against temperature and humidity extremes, and it strips cleanly and easily for use in even the most challenging installation conditions.

GigaGuide 62.5 XL is manufactured at Lucent's Multimode Center of Excellence (Sturbridge, Massachusetts) using the company's advanced Inside Vapor Deposition (IVD) technology. Using the IVD process, Lucent produces a range of multimode fiber products that offer excellent performance for all transmission protocols. The IVD method enables Lucent to precisely control each fiber's index of refraction. Under the restricted launch conditions used in Gigabit Ethernet, this maximizes fiber bandwidth performance at 1Gb/s speeds.

Like all of Lucent's graded index multimode fibers, GigaGuide 62.5 XL fibers are 100 percent quality tested in accordance with the Telecommunications Industry Association (TIA) Fiber Optic Test Procedures (FOTP) and other industry standards.

Optical Fiber Specifiations
GigaGuide meets or exceeds industry standards for fiber specifications.
Physical Characteristics
Core diameter (µm)
62.5 ± 3
Clad diameter (µm)
125 ± 1
Coating diameter (µm)
245 ± 10
Core non-circularity (%)
< 5
Clad non-circularity (%)
< 2
Core-clad offset (µm)
< 3
Clad-coating offset (µm)
< 6
Standard prooftest (kpsi)
> 100
Standard reel lengths (km)
2.2 – 8.8
Optical Characteristics
Attenuation at 850 nm (dB/km)
< 2.9
Attenuation at 1300 nm (dB/km)
< 0.7
Numerical aperture
0.275 ± 0.015
Zero dispersion wavelength range (nm)
1320 - 1365
Maximum dispersion slope (ps/(nm2*km))
0.097
Macrobend attenuation (dB) 100 turns on
a 75 mm mandrel at 850 nm and 1300 nm
< 0.5
Point discontinuities (dB) at 850 nm and 1300 nm
< 0.08
Group Refractive Index
850 nm
1.496
1300 nm
1.491
GigaGuide provides resistance to temperature and humidity extremes.
Environmental Performance
Maximum induced attenuation @ 850 nm and 1300 nm from -60°C to +85°C, (dB/km)
< 0.20
Maximum induced attenuation @ 850 nm and 1300 nm from -10°C to +85°C, 85% RH, 30-day cycle (dB/km)
< 0.20
GigaGuide's dual-layer UV-cured acrylate coating provides excellent fiber protection and strips cleanly and easily.
Coating Removal Performance
Typical dry strip force (lbf)
< 0.6
Typical wet strip force (lbf)
< 0.6


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