Xie Zhengyang, Li Shangyuan, Yan Haozhe, Xiao Xuedi, Zheng Xiaoping, Zhou Bingkun
Opt Express. 2016 Dec 26;24(26):30282-30288. doi: 10.1364/OE.24.030282.
A tunable dual-frequency optoelectronic oscillator (OEO) based on dual-parallel Mach-Zehnder modulator (DPMZM) with low intermodulation is proposed and experimentally demonstrated. Two tunable electronic band-pass filters are used to select the oscillation modes of the two oscillating frequencies to achieve tunable dual-frequency OEO (TDF-OEO). Each of the two selected modes are modulated onto one sub-modulator of the DPMZM. By choosing proper bias conditions of the DPMZM, the intermodulation components generated by the dual-frequencies are suppressed. The tuning range of the TDF-OEO is from 1 GHz to 15 GHz in the experiment. We also discussed and experimentally demonstrated the tuning limitation of this dual frequency system.
提出并通过实验证明了一种基于具有低互调特性的双平行马赫-曾德尔调制器（DPMZM）的可调谐双频光电振荡器（OEO）。使用两个可调谐电子带通滤波器来选择两个振荡频率的振荡模式，以实现可调谐双频OEO（TDF-OEO）。两个选定模式中的每一个都被调制到DPMZM的一个子调制器上。通过选择DPMZM的适当偏置条件，抑制了由双频产生的互调分量。在实验中，TDF-OEO的调谐范围为1 GHz至15 GHz。我们还讨论并通过实验证明了该双频系统的调谐限制。
