Cost-Effective Brillouin Optical Time-Domain Analysis Sensor Using a Single Optical Source and Passive Optical Filtering

Figure 5

(a) Brillouin gain spectra measured at the heated location of the fiber, as the temperature is raised in 10°C steps. (b) Calculated BFS as a function of temperature in the climatic chamber (symbols) and linear regression (solid line).

(a)

(b)