A highly stable mm-wave synthesizer realized by mixing two lasers locked to an optical frequency comb generator
A highly stable mm-wave synthesizer realized by mixing two lasers locked to an optical frequency comb generator
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DOI：
10.1016/j.optcom.2004.06.028
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发表时间：
2004-10-01
影响因子：
2.4
通讯作者：
Ito, H
中科院分区：
文献类型：
--
作者：
Musha, M;Ueda, A;Ito, H
利用基于电光调制器（EOM）的光频梳产生器（OFCG）实现了两个外腔半导体激光器的锁相，实现了100 GHz以下高光谱纯度、低相位起伏的毫米波信号产生。该方法完全消除了OFCG中由腔体起伏引起的附加相位噪声，在10 kHz偏频以下，两个激光器外差拍音的相位噪声仅由信号发生器的相位噪声决定。以前从未对这样的高频信号进行过详细的研究，并且100 GHz的测量频率仅受相位噪声检测系统带宽的限制，并且可以扩展到1 THz以上。(C)2004 Elsevier B.V.保留所有权利。
Millimeter signal generation with high spectral purity and low phase fluctuations up to 100 GHz were demonstrated with an optical method in which two external-cavity laser diodes were phase-locked to an electro-optic modulator (EOM)-based optical frequency comb generator (OFCG). The additional phase noise caused from the cavity fluctuation in OFCG was completely canceled, and the phase noise of the heterodyne beat note of two LDs was determined only by that of the signal generator below offset frequency of 10 kHz. The detailed investigation of such a high frequency signal had never been done before, and the measured frequency of 100 GHz was limited only by the bandwidth of the phase noise detection system, and can be expanded up to more than 1 THz. (C) 2004 Elsevier B.V. All rights reserved.