Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of distributed fiber optic technologies.
| Characteristic/Type | Rayleigh | Brillouin | Raman |
|---|---|---|---|
| Domain | OFDR | BOTDR; BOTDA | OTDR |
| Measuring Parameters | Strain; Temperature |
Strain; Temperature |
Strain; Temperature |
| Maximum Fiber Length | 100 m | 10 km | 20 km |
| Spatial Resolution | 2.5–5 mm | 10 cm | 1–2 m |
| Nominal Strain Accuracy | 1 με | 25 με | 1 με |
