High-performance Brillouin optical correlation-domain reflectometry

Single-end-access distributed strain sensing with wide dynamic range using higher-speed Brillouin optical correlation-domain reflectometry

“…The additionally required main devices only include a relatively low-performance frequency sweeper [or a standard voltage-controlled oscillator (VCO)] and an inexpensive sound board connected to a computer, thereby maintaining the system simplicity and cost efficiency. Note that this work is an evolutionary version of our previous work published in a conference proceeding, 41) where similar experimental results are presented but not in detail because of the strictly limited space. Here, mainly focusing on the strain dynamic range, more detailed background, experimental conditions, and discussions are described; furthermore, some experimental results on breakage detection using this configuration are presented for the first time.…”