研究目的
To propose a fiber optic planar accelerometer (FOPA) based on modal interferometer for low frequency micro-vibration detection, overcoming drawbacks such as low sensitivity, poor reproducibility, and complex fabrication processes.
研究成果
The FOPA demonstrates high sensitivity (227.82 mV/g) and resolution (12.54 μg/√Hz) from 8 to 100 Hz, with low directional crosstalk (-45.88 dB) and temperature crosstalk (-0.5 nm/°C). It is suitable for low frequency micro-vibration detection.
研究不足
The study focuses on low frequency micro-vibration detection. The temperature crosstalk is noted as a limitation, with a value of -0.5 nm/°C.
1：Experimental Design and Method Selection:
The FOPA is designed using a modal interferometer with a sensing panda polarization maintaining fiber (PMF) coiled on an ABS disk. A cylinder mass is fixed on the disk, and a narrow linewidth laser is used as the light source.
2：Sample Selection and Data Sources:
The FOPA is tested with a reference accelerometer (RA, B&K 8305) and a vibrator (B&K 4809) driven by a signal generator (B&K 3160-A-022) and a power amplifier (B&K 2176).
3：6). List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Includes RIO Orion laser module, ABS disk, cylinder mass, PMF, electric circuit components, and B&K Pulse labshop system for data processing.
4：Experimental Procedures and Operational Workflow:
The FOPA is tested vertically and horizontally with a frequency sweep to generate acceleration. The light intensity is detected by a photo detector (PD) and processed.
5：Data Analysis Methods:
The output voltage is analyzed for sensitivity, resolution, and directional crosstalk. Temperature crosstalk is tested in a temperature chamber.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
optical spectrum analyzer
AQ6370C
Yokogawa
Used to record the spectra of the ASE light and transmission light.
立即获取同款设备 -
RIO Orion laser
RIO
Used as light source in the experimental setup.
暂无现货
预约到货通知
-
reference accelerometer
B&K 8305
B&K
Used as a reference to compare with the FOPA.
暂无现货
预约到货通知
-
vibrator
B&K 4809
B&K
Used to generate acceleration for testing the FOPA.
暂无现货
预约到货通知
-
signal generator
B&K 3160-A-022
B&K
Used to drive the vibrator.
暂无现货
预约到货通知
-
power amplifier
B&K 2176
B&K
Used to amplify the signal from the signal generator to the vibrator.
暂无现货
预约到货通知
-
登录查看剩余4件设备及参数对照表
查看全部
