There are many fiber types, but two main fiber types: single mode fibers (SM) and Multi-mode fibers (MM).
SM fibers:
| ITU Spec. | IEC SMF Type | TIA Spec | Description |
| G.652 | B1.1 | TIA 492CAAA / OS1 | Standard Singlemode Fiber |
| G.652 | B1.3 | TIA 492CAAB / OS2 | Low Water Peak Fiber |
| G.653 | B2 | Dispersion Shifted Fiber | |
| G.655 | B4 | TIA-492E000 / TIA-492EA00 | Non-Zero Dispersion Shifted Fiber |
| G .657 | Bending Insensitive Fiber |
For G.657 fibers, there are four sub-types: G.657A1, G.657A2, G.657B2 and G.657B3.
“1”, “2” and “3” mean the minimum bending radius.
The mininum bending radius of G.657 fibers as follows:
| 1 | 10mm |
| 2 | 7.5mm |
| 3 | 5mm |
MM fibers:
| OM Fiber Type (TIA) | Core Diameter | ITU-T | IEC-60793-2-10 | 1G 1000BASE-SX | 1G 1000BASE-LX | 10G 10GBASE | 40G 40GBASE SR4 | 100G 100GBASE SR4 |
| OM1 | 62.5μm | — | Type A1b | 275m | 550m | 33m | Not supported | Not supported |
| OM2 | 50μm | G.651.1 | Type A1a.1 | 550m | 550m | 82m | Not supported | Not supported |
| OM3 | 50μm | G.651.1 | Type A1a.2 | 550m | 550m | 300m | 100m (SR4) | 100m (SR4) |
| OM4 | 50μm | G.651.1 | Type A1a.3 | 550m | 550m | 400m | 150m (SR4) | 150m (SR4) |
| OM5 | 50μm | G.651.1 | Type A1a.4 |
