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Brillouin frequency shift distribution measurement system and Brillouin frequency shift distribution measurement method
Brillouin frequency shift distribution measurement system and Brillouin frequency shift distribution measurement method
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机译：布里渊频移分布测量系统及布里渊频移分布测量方法
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摘要
PROBLEM TO BE SOLVED: To provide means of actualizing distribution measurement of a Brillouin frequency shift which is superior in spatial resolution with very simple device constitution, according to the present invention.SOLUTION: A Brillouin frequency shift distribution measurement system according to the present invention comprises: an optical comb generation part 1 which generates a coherent optical comb having a period T=1/Δf shorter than the lifetime of an acoustic phonon as a subject; a branch output part 11-1 which branches the optical comb into pump light and probe light respectively; a delay control part 3 which delays output time of at least one of the probe light and pump light input through the branch output part 11-1; an optical frequency part 2 which is arranged behind the delay control part 3, and repeatedly varies the optical frequency of at least one of the probe light and pump light; and a power measurement part 4 which measures power of the probe light each time the optical frequency is varied.SELECTED DRAWING: Figure 1
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