机构地区: 仲恺农业技术学院
出 处: 《微计算机信息》 2006年第06S期193-194,共2页
摘 要: 利用铽镝铁大磁致伸缩材料制作的保偏光纤换能器,并对Mach-Zehnder干涉仪进行了改进,增加了环型共振腔,从而有效提高了磁场的感测效果。对有共振腔与无共振腔干涉仪在测量磁场信号进行对比研究,发现信噪比提高12.2dB。对共振腔在光路中的前后位置对比研究,发现共振腔在光路后端能更有效地测量磁场。 GMM transducer is produced. A Mach-Zehnder Optics Fiber Interferometer with ring resonance is set up. The S/N ratio of M-Z with ring resonance is increased to 11.2dB than that of M-Z without ring resonance. The effect of magnetic field measuring is better when the ring resonance is located in the back-end of optics road.