.A new DFB-fiber laser hydrophone[J].Optoelectronics Letters,2007,3(4):264-266 A new DFB-fiber laser hydrophone WANGJin-yu SUIQing-mei CHANGJun LIU Tong-yu MA Liang-zhu NI Jia-sheng [1]LaserInstituteofShandongAcademyofScience,Jinan250014,China [2]ShandongMicro-ensorPhotonicsLtd,Jinan250014,China [3]SchoolofControlScienceandEngineering,ShandongUniversity,Jinan250061,China Abstract:       A new fiber optic hydrophone is described. based on a distributed feedback fiber laser (DFB-fiber laser) Experimental arrangement consists of DFB-FL, unbalanced Mach-Zehnder interferometer, piezoelectric (PZT) modulator, detection and feedback control circuit, and oscillograph. Experimental results show that the bare DFB-FL hydrophone is extremely sensitive to small perturbations in their environment and can acquire exact acoustic signals. Hits: 3640 Download times: 192 View Full Text    Download reader