Multimode Fiber Types - OM1, OM2, OM3, OM4

Definition of four different International Organisationi for Standardization (ISO) multimode fibers categories.
This is due  to increase in demand for multimode bandwidth applications especially in Gigabit Ethernet applications.

OM1
ISO 651.1  ISO/IEC 11801:2002 (OM1)    
Graded Inded MM  -  850/1300nm  -  data communication

OM2
ISO 651.1  ISO/IEC 11801:2002 (OM2)    
Graded Index MM - 850nm/1300nm - Video and data communcation

OM3
ISO 651.1  ISO/IEC 11801:2002 (OM3)    
Graded Index MM50/125micron  - Laser 850nm - Gigebit Ethernet application

OM4
ISO 651.1  ISO/IEC 11801:2002 (OM4)    
Graded Index MM - VCSEL - 850nm - 40 GB/s , 10Gb/s data center application