pulsed-light system 中文意思是什麼
pulsed-light system
解釋
脈沖照明系統-
At the same time, it uses a frequency translator to obtain a frequency shift, which is equal to the brillouin frequency in fiber. then the detecting pulsed light and the cw reference light can coherent. this method greatly improved the system ’ s sensitive and signal to noise ratio ( snr )
同時在探測光路中引入一個光移頻環路,使探測光移頻后再經光纖中布里淵頻移,其後向布里淵散射光頻率與參考光束大致相當,可進行相干自外差探測,大大提高了系統的探測靈敏度以及系統的信噪比。
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