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

Figure 6

(a) Calculated BFS as a function of distance at the final locations of the fiber, as the temperature is raised in the climatic chamber in 10°C steps. (b) Normalized amplitude of the detected signal at the transition between the heated and the room temperature sections of the fiber.

(a)

(b)