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Photonic generation of tunable multi-frequency microwave source

Photonic generation of tunable multi-frequency microwave source

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  • Author(s): S. Gao 1 ; Y. Gao 1 ; S. He 1
    • View affiliations
    • Affiliations: 1: Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, People's Republic of China
  • Source: Volume 46, Issue 3, 4 February 2010, p. 236 – 237
    DOI:  10.1049/el.2010.2876 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Engineering and Technology
Published

A flexibly tunable multi-frequency microwave source is presented based on optical heterodyning between the intensity-modulated optical carrier (incorporated four-wave mixing equalisation and stabilisation) and the frequency-shifted Stokes light generated by fibre stimulated Brillouin scattering. About 20 microwave frequencies centred at 10.77 or 21.62 GHz are experimentally observed. The central frequency and the frequency spacing of the multi-frequency microwave source can be freely tuned by changing the frequency shift of the beating optical waves and the driving frequency on the modulator.

Inspec keywords: multiwave mixing; heterodyne detection; optical communication; Brillouin spectra

Other keywords: tunable multi-frequency microwave source; frequency 21.26 GHz; intensity-modulated optical carrier; beating optical waves; optical heterodyning; four-wave mixing equalisation; frequency shift; central frequency; frequency-shifted Stokes light; fibre stimulated Brillouin scattering; photonic generation; driving frequency; frequency spacing; frequency 10.77 GHz

Subjects: Optical communication

References

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