Research output: Contribution to journal › Article › peer-review
3D shape sensor based on discrete-point Rayleigh reflectors inscribed by femtosecond pulses in multicore fibers. / Munkueva, Zh; Dostovalov, A.; Bronnikov, K. et al.
In: Sensors and Actuators, A: Physical, Vol. 379, 115946, 01.12.2024.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - 3D shape sensor based on discrete-point Rayleigh reflectors inscribed by femtosecond pulses in multicore fibers
AU - Munkueva, Zh
AU - Dostovalov, A.
AU - Bronnikov, K.
AU - Golikov, E.
AU - Egorova, O.
AU - Semjonov, S.
AU - Babin, S.
PY - 2024/12/1
Y1 - 2024/12/1
N2 - Fiber optic sensors which use reflectometry methods to process Rayleigh backscattering signal, are susceptible to any optical losses due to the inherently low level of Rayleigh backscattering in standard telecom optical fibers. In this work, we fabricate and study the shape sensor based on a multicore optical fiber with randomly spaced discrete-point reflectors inscribed in its cores by femtosecond laser pulses. By testing the sensor on different 3D shape samples, we demonstrate the robustness of the shape reconstruction accuracy to introduced optical losses of the signal up to 20 dB with the relative reconstruction error being less than 4 %. In contrast, such level of optical losses dramatically increases the reconstruction error when the unmodified fiber cores are used. A higher signal-to-noise ratio together with low birefringence of the inscribed point reflectors enable accurate shape sensing including the forms with low curvature.
AB - Fiber optic sensors which use reflectometry methods to process Rayleigh backscattering signal, are susceptible to any optical losses due to the inherently low level of Rayleigh backscattering in standard telecom optical fibers. In this work, we fabricate and study the shape sensor based on a multicore optical fiber with randomly spaced discrete-point reflectors inscribed in its cores by femtosecond laser pulses. By testing the sensor on different 3D shape samples, we demonstrate the robustness of the shape reconstruction accuracy to introduced optical losses of the signal up to 20 dB with the relative reconstruction error being less than 4 %. In contrast, such level of optical losses dramatically increases the reconstruction error when the unmodified fiber cores are used. A higher signal-to-noise ratio together with low birefringence of the inscribed point reflectors enable accurate shape sensing including the forms with low curvature.
KW - 3D shape sensor
KW - Fs-laser induced refractive index change
KW - Rayleigh backscattering
UR - https://www.mendeley.com/catalogue/a456950a-ff8c-3208-bd07-99f7abf952b8/
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85205597203&origin=inward&txGid=fc0b4f559d770994633d6dee79ac2ef8
U2 - 10.1016/j.sna.2024.115946
DO - 10.1016/j.sna.2024.115946
M3 - Article
VL - 379
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
SN - 0924-4247
M1 - 115946
ER -
ID: 60778841