【摘要】 利用基于非对称的马赫-曾德尔干涉仪(UMZI)的异质光纤环腔实现了双向双波长多模布里渊激光,激射光与抽运光拍频的中心频率分别约为10.49 GHz和10.54 GHz。实验测量了该结构在不同转速下双向斯托克斯光拍频中纵模的频移量。实验结果表明,频移量随转速线性变化,在实验测量范围内没有观察到闭锁效应,且根据环腔转动时拍频信号频率相对于环腔静止时拍频的频移可以明确判断环腔转动方向,提供了一种实现布里渊光纤陀螺(BFOG)的新思路。实验测得陀螺效应标度为1.0305 kHz/°(.s-1),与理论分析吻合较好。更多还原

【Abstract】 Bi-directional dual-wavelength multi-mode Brillouin lasing based on the unbalanced Mach-Zehnder interferometer(UMZI) hybrid fiber ring cavity is realized experimentally with frequencies of heterodyne spectrum between pump and Stokes lights being 10.49 GHz and 10.54 GHz,respectively.Frequency shift of bi-directional Stokes light′s beat spectrum is measured,and results show that the frequency shift linearly increases with the increase of rotating speed of cavity.The lock-in effect is not observed in the range of measurement,and rotating direction of cavity can be clearly distinguished through relative frequency shift.This provides a novel way for designing Brillouin fiber-optic gyroscope(BFOG).The measured scale factor of gyroscope is 1.0305 kHz/(°·s-1),which fits well with the result of theoretical analysis.更多还原