面向海洋水声通信的新型全光纤激光声源系统
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- 英文论文题名：A novel all-fiber photoacoustic source system for underwater communication in ocean
- 论文作者：李秋实 ; 赵晓萌 ; 方少亮 ; 陈哲
- 英文论文作者：LI Qiu-shi ; ZHAO Xiao-meng ; FANG Shao-liang ; CHEN Zhe ; Guangdong Provincial Key Laboratory of High Performance Computing ; Department of Optoelectronic Engineering ; Jinan University ; Equipment Department of Guangzhou Military ; Guangdong Science & Technology Infrastructure Center
- 年：2016
- 作者机构：广东省高性能计算重点实验室;暨南大学光电工程系;广州军区装备部;广东省科技基础条件平台中心;
- 论文关键词：水声通信 ; 激光致声 ; 热膨胀机制 ; 全光纤系统 ; 光声脉冲
- 英文论文关键词：underwater communication ; laser generation of acoustic waves ; thermoelastic mechanism ; all-fiber system ; photoacoustic pulse
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：TN929.3
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：3
- 文件大小：303k
- 原文格式：D
- 会议级别：全国
摘要
搭建了面向海洋水声通信的新型全光纤激光声源实验系统,并对实验系统进行研究。首先用铌酸锂电光强度调制器将激光器输出的连续光调制成脉冲光,并利用两级掺铒光纤放大器放大脉冲光功率;然后将输出光纤置于液体媒质的液面以下,直接与其作用激发声波,为提高液体对光的吸收系数,采用墨水作为作用媒质;最后用水听器探测到了单脉冲激光通过热膨胀机制激发的声信号。实验结果表明,单脉冲激光激发的声波为双极性宽频声信号,其频率从几十HZ到几十k Hz,可作为水声通信的声源。研究验证了将激光致声技术应用于全光纤海洋水声通信的可行性。
Facing ocean underwater acoustic communication,an novel all-fiber experimental system of photoacoustic source is set up, and the experimental system is studied. Firstly, continuous laser from a low power laser light source is modulated into pulse laser by a LiNiO_3 waveguide electro-optic intensity modulator, and the pulse laser is amplified by a two-stage erbium-doped optical fiber amplifier. And then acoustic waves are generated by the laser from the output optical fiber which is placed under the liquid level. To increase photoabsorption coefficient, the liquid medium is adopted as ink. At last, the acoustic signal generated by a single pulse laser through thermoelastic mechanism is detected by a piezo-electric hydrophone. The experimental results show that the generated acoustic signal is a broadband single acoustic pulse which frequency covers an extent from tens Hz to tens k Hz and can be used as an acoustic source in the field of underwater acoustic communication. In this paper, the research results demonstrate that it is feasible to apply the technology of laser generation of acoustic waves to the field of all-fiber underwater communication in ocean.
Facing ocean underwater acoustic communication,an novel all-fiber experimental system of photoacoustic source is set up, and the experimental system is studied. Firstly, continuous laser from a low power laser light source is modulated into pulse laser by a LiNiO_3 waveguide electro-optic intensity modulator, and the pulse laser is amplified by a two-stage erbium-doped optical fiber amplifier. And then acoustic waves are generated by the laser from the output optical fiber which is placed under the liquid level. To increase photoabsorption coefficient, the liquid medium is adopted as ink. At last, the acoustic signal generated by a single pulse laser through thermoelastic mechanism is detected by a piezo-electric hydrophone. The experimental results show that the generated acoustic signal is a broadband single acoustic pulse which frequency covers an extent from tens Hz to tens k Hz and can be used as an acoustic source in the field of underwater acoustic communication. In this paper, the research results demonstrate that it is feasible to apply the technology of laser generation of acoustic waves to the field of all-fiber underwater communication in ocean.
引文
[1]Fletcher Blackmon,Lee Estes,Gilbert Fain.Linear optoacoustic underwater communication[J].Applied Optics,2005,44(18):3833~3845
[2]S.V.Egerev.In search of a noncontact underwater acoustic source[J].Acoustical Physics,2003,49(1):51~61
[3]Sandra Nowland Hopko,I.Charies Ume.Laser ultrasonics:simultaneous generation by means of thermoelastic expansion and material ablation[J].Journal of Nondestructive Exaluation,1999,18(3):91~98
[4]Primbsch,E,Bickel.W.Apparatus for producing ultrasonic waves in a workpiece[J].U.S.Patent,1983,4379;409
[5]Vogel.J,A.Bruinsma,J.A,Berkhout.A.J.Beamsteering of laser generated ultrasound[J].Proceedings of Ultrasonics International,Butterworth,Wachington,D.C.,1987:141~152
[6]T.Buma,M.Spisar,M.O’Donnell.Thermoelastic generation of ultrasound using an erbium doped fiber amplifier[J].IEEE Ultrasonics Symposium,1999:1253~1256
[7]S.R.Ravishankar,B.E.Jones.Laser generated acoustic emission in water[J].NDT&E International 2007,40:602~608
[8]Elena Biagi,Massimo Brenci,Stetano Fontani,Leonardo Masotti,Massimiliano Pieraccini.Photoacoustic generation:optical fiber ultrasonic sources for nondestructive evaluation and clinical diagnosis[J].Optical Review,1997,4(4):481~483
[9]Markus W.Sigrist.Laser generation of acoustic waves in liquids and gases[J].J.Appl.Phys,1986,60(7):83~121
[10]Zhou Huijuan,Meng Zhou,Liao Yi.Frequency shift characteristics analysis of Li Nb O3 waveguide electro-optic intensity modulator[J].Chinese Journal of Lasers,2009,36(4):901~905周慧娟,孟洲,廖毅.铌酸锂波导电光强度调制器的移频特性[J].中国激光,2009,36(4):901~905
[2]S.V.Egerev.In search of a noncontact underwater acoustic source[J].Acoustical Physics,2003,49(1):51~61
[3]Sandra Nowland Hopko,I.Charies Ume.Laser ultrasonics:simultaneous generation by means of thermoelastic expansion and material ablation[J].Journal of Nondestructive Exaluation,1999,18(3):91~98
[4]Primbsch,E,Bickel.W.Apparatus for producing ultrasonic waves in a workpiece[J].U.S.Patent,1983,4379;409
[5]Vogel.J,A.Bruinsma,J.A,Berkhout.A.J.Beamsteering of laser generated ultrasound[J].Proceedings of Ultrasonics International,Butterworth,Wachington,D.C.,1987:141~152
[6]T.Buma,M.Spisar,M.O’Donnell.Thermoelastic generation of ultrasound using an erbium doped fiber amplifier[J].IEEE Ultrasonics Symposium,1999:1253~1256
[7]S.R.Ravishankar,B.E.Jones.Laser generated acoustic emission in water[J].NDT&E International 2007,40:602~608
[8]Elena Biagi,Massimo Brenci,Stetano Fontani,Leonardo Masotti,Massimiliano Pieraccini.Photoacoustic generation:optical fiber ultrasonic sources for nondestructive evaluation and clinical diagnosis[J].Optical Review,1997,4(4):481~483
[9]Markus W.Sigrist.Laser generation of acoustic waves in liquids and gases[J].J.Appl.Phys,1986,60(7):83~121
[10]Zhou Huijuan,Meng Zhou,Liao Yi.Frequency shift characteristics analysis of Li Nb O3 waveguide electro-optic intensity modulator[J].Chinese Journal of Lasers,2009,36(4):901~905周慧娟,孟洲,廖毅.铌酸锂波导电光强度调制器的移频特性[J].中国激光,2009,36(4):901~905