Fig. 7: Experimental configuration of the CSWPC Raman distributed sensing. | Light: Science & Applications

Fig. 7: Experimental configuration of the CSWPC Raman distributed sensing.

From: 45 km ROTDR with 0.5 m/0.11 °C via complex-domain square-wave width-chirp pulse compression

Fig. 7: Experimental configuration of the CSWPC Raman distributed sensing.

PSG pulse sequence generator, DFB distributed feedback laser, SOA semiconductor optical amplifier, EDFA erbium-doped fiber amplifier, OC optical coupler, WDM wavelength-division multiplexer, SMF single-mode fiber, FUT fiber under test, APD avalanche photodiode, ADC analog-to-digital converter, PC personal computer

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