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Transversal loading sensor based on tunable beat frequency of a dual-wavelength fiber laser

机译:基于双波长光纤激光器的可调拍频的横向载荷传感器

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摘要

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.
机译:提出并通过基于相移光纤布拉格光栅(PS-FBG)的双波长激光器的光子拍击产生微波信号。双波长激光器由线性腔形成,其中PS-FBG用作双波长选择组件。 PS-FBG上的横向负载增强了光纤的双折射,因此使PS-FBG的传输峰分裂为正交偏振的两个尖锐的传输峰。两个透射峰之间的波长间隔随着PS-FBG上的横向载荷而增加,从而使偏振拍频增加。横向负载传感器利用了这一特性。

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