用于地震信号记录的光纤干涉式水平加速度计

IF 1.1 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Yu. N. Kulchin, R. V. Romashko, O. T. Kamenev, Yu. S. Petrov, A. O. Kamenev
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引用次数: 0

摘要

提出并演示了一种采用无源相位解调的高灵敏度光纤干涉式水平加速度计。介绍了采用多匝光纤线圈作为水平传感元件提高灵敏度的原理。采用光纤3 × 3分频器作为相位解调器。谐振频率以下的光学响应率为1770 rad/g。在55赫兹时,已检测到小至0.16 μg的加速度。比较了光纤加速度计和压电加速度计的噪声水平。光纤加速度计的固有噪声水平低于压电加速度计的固有噪声水平,并且提供了检测低至5 × 10-8 g的加速度的机会。工作频段为10 ~ 130hz。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fiber-Optic Interferometric Horizontal Accelerometer for Seismic Signals Recording

A high-sensitivity fiber-optic interferometric horizontal accelerometer using passive phase demodulation is proposed and demonstrated. The principle of sensitivity improvement using multiturn optical fiber coil as a horizontal sensing element is described. A fiber-optic 3 × 3 splitter is used as a phase demodulator. The optical responsivity for the frequencies below the resonance was found to be equal 1770 rad/g. Accelerations as small as 0.16 μg at 55 Hz have been detected. The noise level of a fiber-optic accelerometer was compared with a piezoelectric accelerometer. The intrinsic noise level of the fiber-optic accelerometer is lower than that of the piezoelectric accelerometer and provides an opportunity to detect accelerations down to 5 × 10–8 g. Operating frequency band is 10 to 130 Hz.

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来源期刊
Physics of Wave Phenomena
Physics of Wave Phenomena PHYSICS, MULTIDISCIPLINARY-
CiteScore
2.50
自引率
21.40%
发文量
43
审稿时长
>12 weeks
期刊介绍: Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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