Reference
Fiber Optic Guide
OM1–OM5, OS1/OS2 specs, distances, connectors, and jacket colors
| Type | Mode | Core | Jacket | Wavelength | 1G | 10G | 40G/100G |
|---|---|---|---|---|---|---|---|
| OM1 | Multimode | 62.5µm | Orange | 850/1300nm | 275m | 33m | — |
| OM2 | Multimode | 50µm | Orange | 850/1300nm | 550m | 82m | — |
| OM3 | Multimode | 50µm | Aqua | 850/1300nm | 800m | 300m | 100m |
| OM4 | Multimode | 50µm | Aqua | 850/1300nm | 1100m | 400m | 150m |
| OM5 | Multimode | 50µm | Lime | 850–953nm | 1100m | 400m | 150m |
| OS1 | Singlemode | 9µm | Yellow | 1310/1550nm | 10km | 10km | 10km |
| OS2 | Singlemode | 9µm | Yellow | 1310/1550nm | 100km | 40km | 40km |
Common Connector Types
SC
Square push-pull, common in datacom
LC
Small form-factor, most popular in DCs
ST
Bayonet twist-lock, legacy multimode
MPO/MTP
Multi-fiber (12/24), 40G/100G+ trunks
Use OM3/OM4 for in-building/data center. Use OS2 for building-to-building,
campus, or long-haul. All cladding is 125µm.