Ultralow phase noise optoelectronic oscillator and its application to a frequency synthesizer

被引：0

作者：

Liu S. ^{[1
]}

Xu X. ^{[1
]}

Zhang F. ^{[1
]}

Liu P. ^{[1
]}

Kang X. ^{[1
]}

Yang H. ^{[1
]}

Pan S. ^{[1
]}

机构：

[1] Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing

来源：

Journal of Radars | 2019年 / 8卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Frequency synthesizer; OptoElectronic Oscillator (OEO); Phase modulator; Phase noise;

D O I：

10.12000/JR19029

中图分类号：

学科分类号：

摘要：

We propose a novel injection-locked OptoElectronic Oscillator (OEO) with ultralow phase noise based on two cascaded phase modulators, which is further applied to construct a frequency synthesizer. Thanks to the phase modulation, the output optical spectrum expands and the optical power keeps constant while passing through the optical fiber, which dramatically reduces the intensity noise induced by the nonlinear effects of the optical fiber. A dual-output MZI together with a balanced optical detector realizes the phase modulation to intensity modulation conversion and improves the signal to noise ratio of the OEO. The output frequency of the proposed OEO is 9.9999914 GHz with its sidemode suppression ratio larger than 85 dB, and the phase noise reaches -153.1 dBc/Hz at 10 kHz frequency offset which is 38.7 dB lower than that of Keysight E8257D. Moreover, a broadband, high performance frequency synthesizer is established based on the proposed OEO. Combining the DDS and PLL technologies, the proposed frequency synthesizer can cover 5.9～12.9 GHz range. The phase noise is around -130 dBc/Hz@10 kHz, the spur suppression ratio is better than 65 dB, and the frequency hopping time is less than 1.48 μs. © 2019 Institute of Electronics Chinese Academy of Sciences. All rights reserved.

引用

页码：243 / 250

页数：7

共 19 条

[1] Yongke L.I., The design of wide BW frequency synthesizer based on the DDS&PLL hybrid method[C], 2009 9th International Conference on Electronic Measurement & Instruments, pp. 2689-2692, (2009)
[2] Chenakin A., Frequency synthesis: Current solutions and new trends[J], Microwave Journal, 50, 5, pp. 256-260, (2007)
[3] Zhao Z.Y., Li X.Y., Chang W.G., LFM-CW signal generator based on hybrid DDS-PLL structure[J], Electronics Letters, 49, 6, pp. 391-393, (2013)
[4] Romashov V.V., Romashova L.V., Khramov K.K., Et al., Wide-band hybrid frequency synthesizer with improved noise performance[C], 2018 Moscow Workshop on Electronic and Networking Technologies (MWENT), pp. 1-4, (2018)
[5] Li J., Yi X., Lee H., Et al., Electro-optical frequency division and stable microwave synthesis[J], Science, 345, 6194, pp. 309-313, (2014)
[6] Wei J., Kwon D., Zhang S., Et al., All-fiber-photonics-based ultralow-noise agile frequency synthesizer for X-band radars[J], Photonics Research, 6, 1, pp. 12-17, (2018)
[7] Zhou P., Zhang F., Guo Q., Et al., Linearly chirped microwave waveform generation with large time-bandwidth product by optically injected semiconductor laser[J], Optics Express, 24, 16, pp. 18460-18467, (2016)
[8] Peng H., Xu Y., Guo R., Et al., High frequency resolution X-Band frequency synthesizer based on a Phase-Locked optoelectronic oscillator[C], 2018 Asia Communications and Photonics Conference (ACP), pp. 1-3, (2018)
[9] Beltchicov S., Dzisiak A., Guletskiy I., A low phase noise octave band synthesizer using an X-Band frequency reference[J], Mirowave Journal, 57, 5, pp. 104-112, (2014)
[10] Zhou W.M., Blasche G., Injection-locked dual optoelectronic oscillator with ultra-low phase noise and ultra-low spurious level[J], IEEE Transactions on Microwave Theory and Techniques, 53, 3, pp. 929-933, (2005)

← 1 2 →