Simultaneous Measurement of Distributed Temperature and Strain through Brillouin Frequency Shift Using a Common Communication Optical Fiber

<div>Schematic diagram of experimental apparatus. OI: optical isolator; OC: optical coupler; BPF: band-pass filter; PS: polarization scrambler; AWG: arbitrary waveform generator; PD: photodetector; DAQ: data acquisition card; EOM: electro-optic modulator; EDFA: erbium-doped fiber amplifier; FUT: fiber under test; FBG: fiber Bragg grating; CIR: circulator; LNA: low-noise amplifier; LO: local oscillator; PC, polarization controller.</div>

International Journal of Optics

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Figure 1

Figure 1: Simultaneous Measurement of Distributed Temperature and Strain through Brillouin Frequency Shift Using a Common Communication Optical Fiber 

Figure 1 | Simultaneous Measurement of Distributed Temperature and Strain through Brillouin Frequency Shift Using a Common Communication Optical Fiber 