Photonic generation of high quality frequency-tunable millimeter wave and terahertz wave  

作　　者：嵇誉 李岩 张方正 伍剑 洪小斌 徐坤 李蔚 林金桐 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications

出　　处：《Chinese Optics Letters》2012年第4期63-66,共4页中国光学快报（英文版）

基　　金：supported in part by the National"973"Program of China(No.2011CB301702);the National Natural Science Foundation of China(Nos.61001121,61006041,60736036,and 60932004);the Fundamental Research Funds for the Central Universities.

摘　　要：A scheme for the photonic generation of frequency-tunable millimeter wave and terahertz wave signals based on a highly flat optical frequency comb is proposed and demonstrated experimentally.The frequency comb is generated using two cascaded phase modulators（PMs）and an electro-absorption modulator（EAM）.The frequency comb covers a 440-GHz frequency range,with 40-GHz comb spacing and less than 2-dB amplitude variation.By filtering out two of the comb lines with 50 dB out of the band suppression ratio,high frequency-purity and low phase noise millimeter wave or terahertz wave signals are successfully generated,with frequencies ranging from 40 to 440 GHz.A scheme for the photonic generation of frequency-tunable millimeter wave and terahertz wave signals based on a highly flat optical frequency comb is proposed and demonstrated experimentally.The frequency comb is generated using two cascaded phase modulators（PMs）and an electro-absorption modulator（EAM）.The frequency comb covers a 440-GHz frequency range,with 40-GHz comb spacing and less than 2-dB amplitude variation.By filtering out two of the comb lines with 50 dB out of the band suppression ratio,high frequency-purity and low phase noise millimeter wave or terahertz wave signals are successfully generated,with frequencies ranging from 40 to 440 GHz.

关 键 词：Millimeter waves Phase modulation 

分 类 号：TN761[电子电信—电路与系统]