Dual-frequency Brillouin fiber laser for optical generation of tunable low-noise radio frequency microwave frequency
Dual-frequency Brillouin fiber laser for optical generation of tunable low-noise radio frequency microwave frequency
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DOI：
10.1364/ol.33.000016
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发表时间：
2008-01-01
期刊：
影响因子：
3.6
通讯作者：
Jiang, Shibin
中科院分区：
文献类型：
--
作者：
Geng, Jihong;Staines, Sean;Jiang, Shibin
我们提出了一种产生可调谐低噪声射频/微波光信号的新方法，即由两个独立的单频掺Er光纤激光器泵浦的连续双频Bnllouin光纤激光器。它具有布里渊光纤腔内的线宽窄化效应和共用一个腔的两个激光模式之间的共模噪声抵消的固有特性，使我们在不使用超腔的情况下实现了高频率稳定度。通过热调谐两个泵浦激光器的波长，双频布里渊光纤激光器的拍频可以从几十兆赫调到100 GHz，调谐灵敏度接近1.4 GHz/℃。Allan方差测量表明，拍频信号具有赫兹级频率稳定度。(C)2007年美国光学学会。
We demonstrate a new approach, i.e., a cw dual-frequency Bnllouin fiber laser pumped by two independent single-frequency Er-doped fiber lasers, for the generation of tunable low-noise rf/microwave optical signals. Its inherent features of both linewidth narrowing effect in a Brillouin fiber cavity and common mode noise cancellation between two laser modes sharing a common cavity allow us to achieve high frequency stability without using a supercavity. Beat frequency of the dual-frequency Brillouin fiber laser can be tuned from tens of megahertz up to 100 GHz by thermally tuning the wavelengths of the two pump lasers with tuning sensitivity of similar to 1.4 GHz/degrees C. Allan variance measurements show the beat signals have the hertz-level frequency stability. (c) 2007 Optical Society of America.