Fig. 2: Advanced schemes of the Raman distributed optical fiber sensor.
From: Physics and applications of Raman distributed optical fiber sensing
Among them, the red words represent the sub-systems. The black words represent the optimization scheme of temperature measurement accuracy, the blue words represent the optimization scheme of sensing distance and spatial resolution, the green words represent the dual-parameter sensing demodulation scheme, the purple words represent the theoretical or technical bottleneck of the system.
