Photonic generation of microwave signal using a dual-wavelength fiber ring laser with fiber bragg grating-based fabry-perot filter and saturable absorber
2012
In this article, a simple approach for photonic generation of microwave signal using a dual-wavelength single longitudinal mode fiber ring laser is proposed and demonstrated.A narrow transmission band fiber Bragg grating (FBG) based Fabry-Perot cavity is used to select the longitudinal mode. A FBG with reflectivity of 99.5% is used together with 2-m unpumped erbium-doped fiber acting as saturable absorber. Stable dual-wavelength single longitudinal mode fiber lasers with a wavelength separation of approximately 0.057 nm are experimentally realized. By beating the dual-wavelength fiber lasers at a photodetector, photonic generation of microwave signal at 7.129 GHz is successfully obtained. Both of the laser emission and generated microwave signal have good stability at room temperature. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2074–2077, 2012; View this article online at wileyonlinelibrary.com.). DOI 10.1002/mop.27029
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