Fig. 1. Schematic diagram of the experimental setup. EOM, electro-optic modulator; EDFA, erbium-doped fiber amplifier; FUT, fiber under test; PC, polarization controller; AWG, arbitrary waveform generator; OI, optical isolator; PD, photodetector; MG, microwave generator; FBG, fiber Bragg grating; VOA, variable optical attenuator; OSC, oscilloscope; OC, circulator.

Fig. 2. Stokes peak power magnification as the pump power changes in two kinds of fiber core diameter.

Fig. 3. SNR as the pump power changes in two kinds of fiber core diameter.

Fig. 4. Stokes peak power magnification as the pump light power changes in two kinds of fiber length.

Fig. 5. SNR as the pump light power changes in two kinds of fiber length.

Fig. 6. Influence of the Stokes peak power on the Stokes magnification.

Fig. 7. Influence of the Stokes peak power on the Stokes SNR.