State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing 100871, China.
Opt Lett. 2013 Mar 1;38(5):655-7. doi: 10.1364/OL.38.000655.
A widely tunable optoelectronic oscillator (OEO) based on a broadband phase modulator and a tunable optical bandpass filter is proposed and experimentally demonstrated. A tunable range from 4.74 to 38.38 GHz is realized by directly tuning the bandwidth of the optical bandpass filter. To the best of our knowledge, this is the widest fundamental frequency tunable range ever achieved by an OEO. The phase noise performance of the generated signal is also investigated. The single-sideband phase noise is below -120 dBc/Hz at an offset of 10 KHz within the whole tunable range.
提出并实验演示了一种基于宽带相位调制器和可调谐光学带通滤波器的宽调谐光电子振荡器（OEO）。通过直接调谐光学带通滤波器的带宽，实现了从 4.74GHz 到 38.38GHz 的调谐范围。据我们所知，这是 OEO 实现的最宽的基频调谐范围。还研究了产生信号的相位噪声性能。在整个调谐范围内，在 10kHz 的偏移处，单边带相位噪声低于-120dBc/Hz。
