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论文类型：期刊论文

发表时间：2016-12-01

发表刊物：IEEE PHOTONICS TECHNOLOGY LETTERS

收录刊物：SCIE、EI、Scopus

卷号：28

期号：23

页面范围：2681-2684

ISSN号：1041-1135

关键字：Microwave photonic link (MPL); stimulated brillouin scattering (SBS); spurious-free dynamic range (SFDR)

摘要：A novel method to improve the spurious-free dynamic range (SFDR) of a microwave photonic link based on stimulated Brillouin scattering (SBS) processing is proposed and experimentally demonstrated. In the proposed system, an optical single-sideband with suppressed carrier (SSB-SC) signal is generated using a dual-parallel Mach-Zehnder modulator (MZM) by biasing its two sub-MZMs at minimum transmission point and the parent MZM at quadrature transmission point. In order to generate SBS, the SSB-SC signal is amplified and injected into a length of dispersion-shifted fiber where the MPL's double-sideband optical signals are transmitted. Due to the SBS effect, a phase shift is induced to MPL's optical carrier band, and hence, the third-order intermodulation distortion (IMD3) components originated from two different sources can cancel each other. Experimental results show that the SFDR of the link is improved by 10.3 dB, and the IMD3 is reduced by more than 23 dB.