Ultralow-phase-noise millimetre-wave signal generator assisted with an electro-optics-modulator-based optical frequency comb

被引：33

作者：

Ishizawa, A. ^{[1
]}

Nishikawa, T. ^{[2
]}

Goto, T. ^{[1
,2
]}

Hitachi, K. ^{[1
]}

Sogawa, T. ^{[1
]}

Gotoh, H. ^{[1
]}

机构：

[1] NTT Corp, NTT Basic Res Labs, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 2430198, Japan

[2] Tokyo Denki Univ, Dept Elect & Elect Engn, Adachi Ku, 5 Senjyu Asahi Cho, Tokyo 1208551, Japan

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

关键词：

MICROWAVE SIGNALS;

D O I：

10.1038/srep24621

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Low-noise millimetre-wave signals are valuable for digital sampling systems, arbitrary waveform generation for ultra-wideband communications, and coherent radar systems. However, the phase noise of widely used conventional signal generators (SGs) will increase as the millimetre-wave frequency increases. Our goal has been to improve commercially available SGs so that they provide a low-phasenoise millimetre-wave signal with assistance from an electro-optics-modulator-based optical frequency comb (EOM-OFC). Here, we show that the phase noise can be greatly reduced by bridging the vast frequency difference between the gigahertz and terahertz ranges with an EOM-OFC. The EOM-OFC serves as a liaison that magnifies the phase noise of the SG. With the EOM-OFC used as a phase noise "booster" for a millimetre-wave signal, the phase noise of widely used SGs can be reduced at an arbitrary frequency f (6 <= f <= 72 GHz).

引用

页数：7

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