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Proceedings Paper

Radio frequency downconversion based on a tunable optoelectronic oscillator
Author(s): Zhen Zeng; Zhiyao Zhang; Yangxue Ma; Yali Zhang; Shangjian Zhang; Yong Liu
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Paper Abstract

An optically tunable radio frequency (RF) downconversion scheme is proposed based on an optoelectronic oscillator (OEO) incorporating a tunable microwave photonic filter. The local oscillation (LO) is generated in the OEO, whose frequency is varied through simply tuning the frequency difference between the optical carrier and the reflection notch of a phase-shifted fiber Bragg grating (PS-FBG). The LO and the input RF signal are combined and added to the OEO loop by a single phase modulator. The RF modulation sidebands and one of the LO modulation sidebands are extracted out of the OEO loop by the PS-FBG and sent to a photo-detector to achieve RF downconversion. In the experiment, optically tunable LOs in the frequency range of 6 GHz to 15 GHz are generated, and RF signals in the frequency range of 7 GHz to 16 GHz are successfully down-converted to intermediate frequency band around 1 GHz. The proposed scheme has the potential to cover a frequency range beyond 40 GHz.

Paper Details

Date Published: 14 February 2019
PDF: 6 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110482Y (14 February 2019); doi: 10.1117/12.2519810
Show Author Affiliations
Zhen Zeng, Univ. of Electronic Science and Technology of China (China)
Zhiyao Zhang, Univ. of Electronic Science and Technology of China (China)
Yangxue Ma, Univ. of Electronic Science and Technology of China (China)
Yali Zhang, Univ. of Electronic Science and Technology of China (China)
Shangjian Zhang, Univ. of Electronic Science and Technology of China (China)
Yong Liu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)

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