一种频率可调的光学生成微波毫米波源  

Frequency-tunable microwave and millimeter-wave sources with photonic generation

作　　者：洪蕾[1] 苏觉[1] 杨利[1] 钱景仁[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,安徽合肥230026

出　　处：《光电子．激光》2011年第1期64-66,共3页Journal of Optoelectronics·Laser

基　　金：高等学校博士学科点专项科研基金资助项目(WJ2100060001);安徽省光电子科学与技术重点实验室资助项目

摘　　要：实现了一种频率可调的光纤微波毫米波信号源。利用掺铒光纤(EDF)环形腔中的偏振烧孔(PHB)效应和激光反向传播的特点,在室温下得到了波长间隔可调的稳定的单频单纵模双波长激光器,将两束激光在PIN光电二极管中拍频得到了频率在472.5 MHz^26.5 GHz间变化的毫米波信号,输出功率不小于0.015 mW,3dB带宽约为30 kHz。A novel photonic generation technique for frequency-tunable microwave and millimeter-wave sources is presented.Making use of the polarization hole burning effect and the contrary propagations of two light beams in the Er-doped fiber ring cavity,a dual-wavelength fiber ring laser with stable output and tunable wavelength spacing is obtained at room temperature,outputting a single longitudinal mode with a single frequency along each direction.A millimeter-wave signal ranging from 472.5 MHz to 26.5 GHz is generated by the beat of the two output lasers through a PIN high-speed photonic detector.The power of the millimeter-wave is larger than 0.015 mW,and the 3 dB FWHM is about 30 kHz.

关 键 词：毫米波产生 光学外差法 双频激光器 光纤环形腔 

分 类 号：TN202[电子电信—物理电子学]