As mentioned earlier, single mode cables use the thinner optical fibers. Therefore, the 9 micrometer cores are all single mode, labeled as SM 9/125 fibers and have yellow jackets. Multi mode cables use the far thicker diameters of 50 and 62.5 micrometers with three different classes: OM1, OM2 and OM3 where OM stands for Optical Multi-mode. QUICK VIEW SC TO SC MU OM1 Simplex Patch Cord are 62.5 micrometers while OM2 and OM3 are both 50 micrometers. OM3 is differentiated from OM2 by being optimized for laser transceivers. The colors used for the cables are as follows: OM1 - orange jackets, OM2 - blue jackets, OM3 - aqua jackets.
Multi-mode fibers are described by their core and cladding diameters. Thus, 62.5/125 um multi-mode fiber includes a core size 62.5 um along with a cladding diameter of 125 um. The transition between your core and cladding can be sharp, which is called a step-index profile, or perhaps a gradual transition, which is called a graded-index profile. The two types have different dispersion characteristics and therefore different effective propagation distance. Ask a question about this product LC/PC LC/PC 62.5/125 OM1 Multimode Multi-mode fibers may be designed with either graded or step-index profile. In addition, multi-mode fibers are described using a system of classification based on the ISO 11801 standard ?a OM1 Simplex Patch Cord, OM2, and OM3 ?a which is based on the modal bandwidth of the multi-mode fiber. OM4 (defined in TIA-492-AAAD) was finalized in August 2009, and was authored by the end of 2009 through the TIA. OM4 cable can support 125m links at 40 and 100 Gbit/s.
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