Microwave signal generation by using the photonic beating from a phase-shift fiber Bragg grating (PS-FBG)-based dual-wavelength laser is proposed and experimentally demonstrated. The dual-wavelength laser is formed by a linear cavity, in which a PS-FBG is used as a dual-wavelength selective component. Transversal loading on the PS-FBG enhances the birefringence of the optical fiber and consequently makes the transmission peak of the PS-FBG splitting into two sharp transmission peaks of orthogonal polarizations. The wavelength spacing between the two transmission peaks increases with the transversal loading on the PS-FBG, thus making the polarization beating frequency increase. This property is exploited in a transversal loading sensor.
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- microwave generation
- phase-shift fiber Bragg grating
- transversal loading
Fu, H., Shu, X., Mou, C., Zhang, L., He, S., & Bennion, I. (2009). Transversal loading sensor based on tunable beat frequency of a dual-wavelength fiber laser. IEEE Photonics Technology Letters, 21(14), 987-989. https://doi.org/10.1109/LPT.2009.2021484