Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5449834 | Optics Communications | 2017 | 4 Pages |
Abstract
Frequency stability optimization of an X-band optoelectronic oscillator (OEO) using the technique of phase-locked loop (PLL) and dual loop self-injection-locking (DSIL) is proposed and demonstrated. The relationship between the loop transfer characteristics of a PLL and the phase noise of the oscillation signal is analyzed. The close-in phase noise and frequency overlapping Allan deviation (ADEV) of the OEO are optimized by properly choosing the bandwidth of the loop filter of the PLL. The phase noise of the OEO is suppressed by 41.5Â dB at 100Â Hz offset and 21.3Â dB at 10Â kHz offset with PLL and DSIL. The frequency overlapping ADEV achieved 7.03Ã10-12 at average time of 100Â s, which is several orders of magnitude better than that of the DSIL OEO and the free-running OEO, proves the high oscillation stability of proposed scheme.
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Electronic, Optical and Magnetic Materials
Authors
Rongrong Fu, Xiaofeng Jin, Yanhong Zhu, Xiangdong Jin, Xianbin Yu, Shilie Zheng, Hao Chi, Xianmin Zhang,