Institut d’Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Université Lille 1, Avenue Poincaré, B.P. 60069, F-59652 Villeneuve d’Ascq Cedex, France.
Opt Lett. 2011 Jun 1;36(11):2044-6. doi: 10.1364/OL.36.002044.
Thanks to a portable dual-frequency Brillouin fiber laser and a 1.55 μm photomixer, we report the generation of a highly coherent kilohertz level submillimeter wave emission. Low-cost telecommunications components are used to achieve very simple source architecture. The photomixer is composed of a unitravelling carrier photodiode integrated with an antenna. An emission at 316 GHz is observed and analyzed thanks to heterodyne detection with a signal-to-noise ratio >65 dB and a ~1 kHz linewidth. The phase noise of the proposed source has the same performance at 1.7 and 316 GHz. We show that this source has comparable or better phase noise compared to electrical oscillators and the tunability is much wider.
得益于便携式双频布里渊光纤激光器和 1.55μm 光电混频器，我们实现了高相干性千赫兹级亚毫米波发射。该光源采用低成本的电信元件，实现了非常简单的结构。光电混频器由一个集成了天线的载流子输运光电二极管组成。通过与信噪比>65dB、线宽约 1kHz 的信号进行外差检测，我们观察到并分析了 316GHz 的发射信号。所提出的光源在 1.7GHz 和 316GHz 处的相位噪声性能相同。我们表明，与电振荡器相比，该光源具有相当或更好的相位噪声性能，且调谐范围更宽。
