音频无线光通信研究
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摘要
本文设计了一套用于传输音频信号的无线光通信样机,包括发射机和接收机两部分。发射机光源为中心波长为1550nm的半导体激光器,发射功率10mW,信号带宽0.2MHz,工作距离1km。激光器带尾纤输出经准直扩束后发散角被压缩到0.15mrad。
激光调制方式为强度调制,信号调制采取脉冲宽度调制(PWM)方式,并在接收端用简单的低通滤波电路进行解调。同时,还利用了D类音频放大器内置的脉宽调制器实现发射机调制电路的集成。采用比较器电路对接收信号的波形进行整形。实现了在实验室内的音频通信,效果良好。
An audio signals transmission of wireless laser transmission system is designed in this paper, the optical transmitter and receiver is included. The center wavelength of The laser diode of the transmitter is 1550nm , the max operated power of LD is l0mW, and the signal bandwidth of the systerm is 0.2MHz, the working distance could reach lkm. Laser diode with a pigtail output expansion by the beam collimator, its divergence angle had been compressed to 0.15mrad.
laser diode is modulated by intensity, and the audio signal is modulated by pulse width modulation (PWM) mode, in the receiver, a simple low-pass filter is used as a demodulateor. the PWM signal. Class D audio amplifier is used in this design, which built-in pulse-width modulator transmitter modulation is to achieve integration. Using a comparator to achieve the signal waveform shaping. the experment in the audio communication is achieved in the lab,the efficiency is perfectly.
激光调制方式为强度调制,信号调制采取脉冲宽度调制(PWM)方式,并在接收端用简单的低通滤波电路进行解调。同时,还利用了D类音频放大器内置的脉宽调制器实现发射机调制电路的集成。采用比较器电路对接收信号的波形进行整形。实现了在实验室内的音频通信,效果良好。
An audio signals transmission of wireless laser transmission system is designed in this paper, the optical transmitter and receiver is included. The center wavelength of The laser diode of the transmitter is 1550nm , the max operated power of LD is l0mW, and the signal bandwidth of the systerm is 0.2MHz, the working distance could reach lkm. Laser diode with a pigtail output expansion by the beam collimator, its divergence angle had been compressed to 0.15mrad.
laser diode is modulated by intensity, and the audio signal is modulated by pulse width modulation (PWM) mode, in the receiver, a simple low-pass filter is used as a demodulateor. the PWM signal. Class D audio amplifier is used in this design, which built-in pulse-width modulator transmitter modulation is to achieve integration. Using a comparator to achieve the signal waveform shaping. the experment in the audio communication is achieved in the lab,the efficiency is perfectly.
引文
[1]王红亚.光通信系统及其主要部件的研究:[硕士学位论文].天津:天津大学光学工程系
[2]吉紫娟.大气激光通信系统研究:[硕士论文],长春:长春理工大学光学工程,2005
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[10]Fabio E.Zocchi.A simple analytical model of adaptive optics fordirect detection free-space optical communication.Optics Communications 248(2005) 359-374
[11]Ketil Karstada,*,Andr!e Stefanova,1,Mark Wegmullera,Hugo Zbindena,Nicolas Gisina,ThierryAellen b,Mattias Beckb,J!er #ome Faist.Detection of mid-IR radiation bysum frequency generation for free space optical communication.In:Optics and Lasers in Engineering 43(2005) 537-544
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[15]王公堂D类音频功率放大器MAX9700/MAX9712及其应用.新特器件应.2007,10(9)
[16]黄法,孔秀华.数字音频功率放大器MAX9700/9712及其应用.电子技术.1994-2009
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[20]Jia Jia *,Changhe Zhou,Liren Liu.Superresolution technology for reduction of thefar-field diffraction spot size in the laserfree-space communication system.In:Optics Communications 228(2003) 271-278
[21]王志勇,袁强等.一种大气激光通信机的总体设计.通信技术.2007.NO.09
[22]杨敏,朱林泉等.无线激光通信技术.应用激光.2007.12.NO.5
[23]刘晖,卢益民,卢刚.自由空间光通信系统.光电子技术与信息.2005,18(3):59-61
[24]Sadik Esener*,Philippe Marchand.Present status and future needs of free-space optical interconnects.In:Materials Science in Semiconductor Processing 3(2000) 433±435
[25]刘晖.自由空间激光通信系统研究:[硕士学位论文].湖北:华中科技大学.
[26]王红星,张铁英,朱银兵,孙晓明.自由空间光通信调制方式研究.无线电通信技术.2006
[27]张瑞君,国内外光通信用光电探测器新进展.中国电子商情.2005,8
[28]铃木宪次.无线电收音机及无线电路的设计与制作.北京:科技出版社,2005:181-194
[29]韩天愈.自由空间光通信((FSO)大气信道传输关键技术的研究:[硕士学位论文],广州:广东工业大学信号与信息处理,2005
[30]杨敏,朱林泉等.无线激光通信技术.应用激光.2007.12.NO.5
[31]王小妮,朱林泉.半导体激光光束特性的研究.红外.2007.03
[32]王晓海.国外空间激光通信系统技术的最新进展.现代电信科技.2006.03
[33]武锐,廖小平.一种RF MEM电感及其LC低通滤波器的模拟和设计.传感技术学报.2008,4(4)
[34]孙博.无线激光通信系统的研究与设计.微电子学与计算机.2006.12
[35]K.W.Goossen,Member.Microelectromechanical Etalon Modulator DesignsWith Wide Angular Tolerance for Free-Space.In:IEEE PHOTONICS TECHNOLOGY LETTERS,VOL.18,NO.8,APRIL 15,2006
[36]钱晨,马正北,徐宁等.短距离FSO系统研究.南京邮电学院学报.2004.9
[37]Murat Uysal,Member,IEEE,Jing(Tiffany) Li,Member,IEEE,and Meng Yu,Student Member.Error Rate Performance Analysis of Coded Free-Space Optical Links over Gamma-Gamma Atmospheric Turbulence Channels.In:IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,VOL.5,NO.6,JUNE 2006
[38]李晓峰,张永健,陈彦等.大气信道对空—地光通信的影响分析.应用光学.2003.24(6):14-17
[39]谭林伟,元秀华,黄德修.无线光通信系统中的光接收机设计.光学与光电技术.2005 3(4):161-18
[40]王晓海.国外空间激光通信系统技术的最新进展.现代电信科技.2006.03
[41]苗林.大气激光通信接收系统的设计与实现:[硕士学位论文].武汉:华中科技大学电路与系统,2003
[42].Lixia Zhou;Kahn J.M.;Pister K.S.J.Comer-cube retro-reflectors based on structure-assisted assembly for free-space optical communication.Micro electro-mechanical Systems,[J],June 2003,12(3):233-242
[43]Ivan B.Ojordjevic,Bane Vasic,and Mark A.Neifeld.Multilevel Coding in Free-Space Optical MIMO ransmissionWithQ-Ary PPM Over the Atmospheric Turbulence Channel.In IEEE PHOTONICS TECHNOLOGY LETTERS,VOL.18,NO.14,JULY 15,2006
[44]曾华.激光图像通信系统的原理与设计.中国水运.2007(3)
[45]邵秀琴1,林兆祥2,刘林美2,吴金泉1,激光内调制自由空间光通信实验系统装置的研制.2008,12(27)
[2]吉紫娟.大气激光通信系统研究:[硕士论文],长春:长春理工大学光学工程,2005
[3]易成林.自由空间光通信技术的发展现状与未来趋势:现代商贸工业.2007.9
[4]王峰,高瞻.城域网接入新技术—自由空间光通信(FSO).通信市场.2004,24(1):13-15
[5]顾畹仪,李国瑞.光纤通信系统[M].北京:北京邮电大学出版社.1999
[6]Gennady P.Berman a,Alan R.Bishop b,Boris M.Chernobrod a,*,Dinh C.Nguyen c,Vyacheslav N.Gorshkov a,d.Suppression of intensity fluctuations in free space high-speedoptical communication based on spectral encodingof a partially coherent beam,In:Optics Communications 280(2007) 264-270
[7]谭军1,贾大功2,3,白锋2,3.,一种新型光纤准直器的设计.江西科学.2009.2(27)
[8]邹延聪,陆绮荣.基于自由空间光通信技术的研究.通信技术.2009,1
[9]Junbo Yang · Xianyu Su.Design of a free-space 3-D crossover optical network..Photon Netw Commun (2007) 14:223-228
[10]Fabio E.Zocchi.A simple analytical model of adaptive optics fordirect detection free-space optical communication.Optics Communications 248(2005) 359-374
[11]Ketil Karstada,*,Andr!e Stefanova,1,Mark Wegmullera,Hugo Zbindena,Nicolas Gisina,ThierryAellen b,Mattias Beckb,J!er #ome Faist.Detection of mid-IR radiation bysum frequency generation for free space optical communication.In:Optics and Lasers in Engineering 43(2005) 537-544
[12]CotterW.Sayre.无线通信设备与系统设计大全.人民邮电出版社2004.1
[13]黄智伟.无线发射与接收电路设计.北京:北京航空航天大学出版社.2004.5
[14]严学军.自由空间光通信收发系统的研究:[硕士学位论文].四川:四川大学物理与科学技术学院
[15]王公堂D类音频功率放大器MAX9700/MAX9712及其应用.新特器件应.2007,10(9)
[16]黄法,孔秀华.数字音频功率放大器MAX9700/9712及其应用.电子技术.1994-2009
[17]Ketil Karstada,*,Andr!e Stefanova,1,Mark Wegmullera,Hugo Zbindena,Nicolas Gisina,ThierryAellen b,Mattias Beckb,J!er #ome Faistb.Detection of mid-IR radiation bysum frequencygeneration for free space optical communication.In:Optics and Lasers in Engineering 43(2005) 537-544
[18]吕辉,高瞻.自由空间光通信系统中的激光器和探测器.电信快报.2003.NO.3
[19]苏民生,陈长缨.无线光通信在国内的发展状况.光机电信息.2004,10
[20]Jia Jia *,Changhe Zhou,Liren Liu.Superresolution technology for reduction of thefar-field diffraction spot size in the laserfree-space communication system.In:Optics Communications 228(2003) 271-278
[21]王志勇,袁强等.一种大气激光通信机的总体设计.通信技术.2007.NO.09
[22]杨敏,朱林泉等.无线激光通信技术.应用激光.2007.12.NO.5
[23]刘晖,卢益民,卢刚.自由空间光通信系统.光电子技术与信息.2005,18(3):59-61
[24]Sadik Esener*,Philippe Marchand.Present status and future needs of free-space optical interconnects.In:Materials Science in Semiconductor Processing 3(2000) 433±435
[25]刘晖.自由空间激光通信系统研究:[硕士学位论文].湖北:华中科技大学.
[26]王红星,张铁英,朱银兵,孙晓明.自由空间光通信调制方式研究.无线电通信技术.2006
[27]张瑞君,国内外光通信用光电探测器新进展.中国电子商情.2005,8
[28]铃木宪次.无线电收音机及无线电路的设计与制作.北京:科技出版社,2005:181-194
[29]韩天愈.自由空间光通信((FSO)大气信道传输关键技术的研究:[硕士学位论文],广州:广东工业大学信号与信息处理,2005
[30]杨敏,朱林泉等.无线激光通信技术.应用激光.2007.12.NO.5
[31]王小妮,朱林泉.半导体激光光束特性的研究.红外.2007.03
[32]王晓海.国外空间激光通信系统技术的最新进展.现代电信科技.2006.03
[33]武锐,廖小平.一种RF MEM电感及其LC低通滤波器的模拟和设计.传感技术学报.2008,4(4)
[34]孙博.无线激光通信系统的研究与设计.微电子学与计算机.2006.12
[35]K.W.Goossen,Member.Microelectromechanical Etalon Modulator DesignsWith Wide Angular Tolerance for Free-Space.In:IEEE PHOTONICS TECHNOLOGY LETTERS,VOL.18,NO.8,APRIL 15,2006
[36]钱晨,马正北,徐宁等.短距离FSO系统研究.南京邮电学院学报.2004.9
[37]Murat Uysal,Member,IEEE,Jing(Tiffany) Li,Member,IEEE,and Meng Yu,Student Member.Error Rate Performance Analysis of Coded Free-Space Optical Links over Gamma-Gamma Atmospheric Turbulence Channels.In:IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,VOL.5,NO.6,JUNE 2006
[38]李晓峰,张永健,陈彦等.大气信道对空—地光通信的影响分析.应用光学.2003.24(6):14-17
[39]谭林伟,元秀华,黄德修.无线光通信系统中的光接收机设计.光学与光电技术.2005 3(4):161-18
[40]王晓海.国外空间激光通信系统技术的最新进展.现代电信科技.2006.03
[41]苗林.大气激光通信接收系统的设计与实现:[硕士学位论文].武汉:华中科技大学电路与系统,2003
[42].Lixia Zhou;Kahn J.M.;Pister K.S.J.Comer-cube retro-reflectors based on structure-assisted assembly for free-space optical communication.Micro electro-mechanical Systems,[J],June 2003,12(3):233-242
[43]Ivan B.Ojordjevic,Bane Vasic,and Mark A.Neifeld.Multilevel Coding in Free-Space Optical MIMO ransmissionWithQ-Ary PPM Over the Atmospheric Turbulence Channel.In IEEE PHOTONICS TECHNOLOGY LETTERS,VOL.18,NO.14,JULY 15,2006
[44]曾华.激光图像通信系统的原理与设计.中国水运.2007(3)
[45]邵秀琴1,林兆祥2,刘林美2,吴金泉1,激光内调制自由空间光通信实验系统装置的研制.2008,12(27)