TY - JOUR
T1 - Numerical Analysis on Ultrasonic Sensing Mechanism of Fiber Gratings and their frequency Responses
AU - Wu, Xianmei
AU - Chen, Jiayi
AU - Yang, Qi
AU - An, Bingwen
AU - Zhang, Jinying
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - Fiber grating has the advantages of small size, light weight, strong to electromagnetic interference, which has been a research focus in the field of ultrasonic sensing. Grating devices include fiber Bragg grating (FBG) and phase-shifting fiber Bragg grating (PS-FBG). Due to different refractive index distribution of the two gratings, they have different sensing characteristics for ultrasonic sensing. In this paper, an analysis method of fiber grating ultrasonic sensing mechanism was proposed, and the frequency response of fiber grating was studied. Results showed that the frequency response bandwidth of PS-FBG is wider than that of FBG when the optical parameters is the same. The frequency response of FBG is affected mainly by grating length, but for PS-FBG, the frequency response is affected by refractive index modulation depth and grating length together.
AB - Fiber grating has the advantages of small size, light weight, strong to electromagnetic interference, which has been a research focus in the field of ultrasonic sensing. Grating devices include fiber Bragg grating (FBG) and phase-shifting fiber Bragg grating (PS-FBG). Due to different refractive index distribution of the two gratings, they have different sensing characteristics for ultrasonic sensing. In this paper, an analysis method of fiber grating ultrasonic sensing mechanism was proposed, and the frequency response of fiber grating was studied. Results showed that the frequency response bandwidth of PS-FBG is wider than that of FBG when the optical parameters is the same. The frequency response of FBG is affected mainly by grating length, but for PS-FBG, the frequency response is affected by refractive index modulation depth and grating length together.
KW - Fiber Grating
KW - Frequency Response
KW - Ultrasonic sensing
UR - http://www.scopus.com/inward/record.url?scp=85122881069&partnerID=8YFLogxK
U2 - 10.1109/IUS52206.2021.9593737
DO - 10.1109/IUS52206.2021.9593737
M3 - Conference article
AN - SCOPUS:85122881069
SN - 1948-5719
JO - IEEE International Ultrasonics Symposium, IUS
JF - IEEE International Ultrasonics Symposium, IUS
T2 - 2021 IEEE International Ultrasonics Symposium, IUS 2021
Y2 - 11 September 2011 through 16 September 2011
ER -