基于强度调制和布里渊效应的六倍频可调毫米波信号产生  

Sextupling tunable mm-wave signal generation based on intensity modulation and Brillouin effect

作　　者：魏志虎[1] 王荣[1] 方涛[1] 蒲涛[1] 熊锦添 甄飞[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《光电子．激光》2012年第10期1890-1894,共5页Journal of Optoelectronics·Laser

基　　金：国家"973"计划(2012CB315603);国家自然科学基金重点(NSFC-61032005);国家自然科学基金(NSFC-61177065;NSFC-61174199)资助项目

摘　　要：提出了一种新型的基于马赫-曾德尔调制器(MZM)和布里渊效应实现六倍频可调毫米波信号输出的方法。在本方案中,先调节MZM的直流偏置,抑制偶数边带,留下奇数边带;经过大功率掺Er3+光纤放大器(EDFA)放大之后,使两个一阶边带的功率达到布里渊阈值之上,然后采用了25km的单模光纤(SMF)作为布里渊介质,滤除一阶边带,留下三阶边带;最后经过EDFA放大和光电探测器(PD)光电转换得到六倍频的毫米波信号。因为布里渊边带滤波是窄带滤波,与波长无关,故本系统可以实现波长无关的微波信号产生。A novel approach to generate sextupling tunable millimeter-wave（mm-wave） signals is proposed and experimentally demonstrated based on a Mach-Zehnder modulator（MZM） and a Brillouin-assisted sideband-filtering technique.In this scheme,the dc bias is tuned for the MZM to suppress even sideband,with odd sideband left.The power of two first-order sidebands can be higher then the Brillouin threshold after the Er3＋-doped fiber amplifier（EDFA）.Using the 25 km-long sigle-mode fiber（SMF） as Brillouin medium,first-order sidebands are filtered,with three-order sidebands left.Finally,the sextupling mm-wave signals can be achieved by the amplifying of EDFA and the optic-electric conversion of photo-detector（PD）.As this stimulated Brillouin scattering（SBS）-assisted sideband-filter is narrow band filtering,independent of wavelength,a wavelength-flexible way of optical mm-wave signal generaton can be successfully realized.

关 键 词：光电子学 毫米波产生 受激布里渊散射(SBS) 六倍频 

分 类 号：TN929.11[电子电信—通信与信息系统]