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Table 2 Comparison of the proposed fast BOTDA schemes in this work

From: Review: distributed time-domain sensors based on Brillouin scattering and FWM enhanced SBS for temperature, strain and acoustic wave detection

 

[53] optical frequency-agile technique

[52] slope-assisted (SA) BOTDA

[50] Frequency comb-based sweep-free method

[54] OCC–BOTDA

Sampling Rate

~10 kHz

~ 100 Hz

~ 33 kHz

6.25 MHz

Sensing Accuracy

~ 5 μɛ

n/a

29 MHz

35 μɛ (with 30 points moving average)

Sensing Range

100 m

85 m

2 km

1 km

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