Optical generation of microwave signal using fiber Bragg gating-based double-ring fiber laser assisted by saturable absorber
Abstract
We propose and demonstrate a simple approach to optical generation of microwave signal by exploiting a uniform fiber Bragg gating (FBG)-based double-ring laser and a saturable absorber.Parallel arranged uniform FBGs have a wavelength spacing corresponding to the microwave signal. A piece of unpumped polarization-maintaining erbium-doped fiber (EBF) serves as a saturable absorber, ensuring the dual-wavelength single longitudinal mode operation. Stable dual-wavelength single longitudinal mode lasers are obtained in the experiment. A microwave signal at 28.38 GHz is successfully generated by beating the dual-wavelength single longitudinal mode lasers. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2478-2481, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26303
