A fiber Bragg grating accelerometer based on corrugated diaphragm

Xiaorui Li; Dakuan Yu; Xiaoyang Fan; Wei Ding; Yiwei Cheng; Qinpeng Liu; Xueguang Qiao

doi:10.1117/12.2584693

15 January 2021 A fiber Bragg grating accelerometer based on corrugated diaphragm

Xiaorui Li, Dakuan Yu, Xiaoyang Fan, Wei Ding, Yiwei Cheng, Qinpeng Liu, Xueguang Qiao

Proceedings Volume 11761, Fourth International Conference on Photonics and Optical Engineering; 117611H (2021) https://doi.org/10.1117/12.2584693
Event: Fourth International Conference on Photonics and Optical Engineering, 2020, Xi'an, China

Abstract

A high frequency fiber Bragg grating (FBG) accelerometer based on corrugated diaphragm has been proposed. The mechanical model is demonstrated. The accelerometer contains four parts, corrugated diaphragm, a FBG, two mass blocks, shell. The corrugated diaphragm is fixed on the shell. The upper and lower parts of the diaphragm center are symmetrically fixed by two mass blocks. The FBG is glued between the bottom of shell and mass blocks through a microhole. The amplitude-frequency and sensitivity of the accelerometer are theoretically analyzed and experimental measured. Experimental results show that the resonant frequency of the accelerometer is 490Hz, the sensor has a broad flat frequency range from 20 Hz to 350 Hz, the sensitivity of the accelerometer is about 50.3 pm/G with a linearity of 0.9997. The cross-sensitivity of the accelerometer is tested and the cross-axis sensitivity is about 8% of the main-axis. The accelerometer has a wide frequency and high sensitivity, which is promising in cross well micro-seismic exploration.

Citation Download Citation

Xiaorui Li, Dakuan Yu, Xiaoyang Fan, Wei Ding, Yiwei Cheng, Qinpeng Liu, and Xueguang Qiao "A fiber Bragg grating accelerometer based on corrugated diaphragm", Proc. SPIE 11761, Fourth International Conference on Photonics and Optical Engineering, 117611H (15 January 2021); https://doi.org/10.1117/12.2584693

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available