Руководство По Установке для Cisco Cisco Packet Data Gateway (PDG)
MIO Port Cabling
▀ Fiber Optic Bend Radius Guidelines
▄ ASR 5500 Installation Guide
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Figure 19. Recommended Fiber Optic Bend Radii
Bend-Insensitive Multimode Fiber
An alternative for maintaining tighter than recommended bend radii is use of Bend-Insensitive Multimode Fiber
(BIMMF). BIMMF is more impervious to bend loss than standard 50-micron multimode fiber (MMF) cable.
(BIMMF). BIMMF is more impervious to bend loss than standard 50-micron multimode fiber (MMF) cable.
Important:
BIMMF cables are only optimized for 850nm wavelengths and not for 1300nm wavelengths.
BIMMF is structurally the same as standard MMF cable but there is an added layer of glass between the core and the
cladding. This layer of glass has a much lower refractive index than the cladding.
cladding. This layer of glass has a much lower refractive index than the cladding.
Bend-insensitive 50-micron MMF cable is full backwards compatible with existing 50-micron MMF and fully
compliant with OM2, OM3 and OM4 standards.
compliant with OM2, OM3 and OM4 standards.