TY - JOUR

T1 - A Prototype for a Passive Resonant Interferometric Fiber Optic Gyroscope with a 3 x 3 Directional Coupler

AU - Ovchinnikov, Konstantin

AU - Gilev, Daniil G.

AU - Krishtop, Victor V.

AU - Volyntsev , Anatoliy B.

AU - Maximenko , Vitaliy A.

AU - Garkushin, Alexey A.

AU - Filatov, Yurii V.

AU - Kukaev, Alexander S.

AU - Sevryugin, Alexander A.

AU - Shalymov, Egor V.

AU - Venediktova, Anastasiya V.

AU - Venediktov, Vladimir Yu.

N1 - Ovchinnikov, K.A.; Gilev, D.G.; Krishtop, V.V.; Volyntsev, A.B.; Maximenko, V.A.; Garkushin, A.A.; Filatov, Y.V.; Kukaev, A.S.; Sevryugin, A.A.; Shalymov, E.V.; Venediktova, A.V.; Venediktov, V.Y. A Prototype for a Passive Resonant Interferometric Fiber Optic Gyroscope with a 3 × 3 Directional Coupler. Sensors 2023, 23, 1319. https://doi.org/10.3390/s23031319

PY - 2023/1/24

Y1 - 2023/1/24

N2 - Reducing the dimensions of optical gyroscopes is a crucial task and resonant fiber optic gyroscopes are promising candidates for its solution. The paper presents a prototype of a miniature resonant interferometric gyroscope of a strategic accuracy class. Due to the use of passive optical elements in this gyroscope, it has a great potential for miniaturization, alongside a low production cost and ease of implementation, since it does not require many feedback loops. The presented prototype shows results on a zero instability of 20°/h and an angle random walk of 0.16°/√h. A theoretical model explaining the nature of the multipath interference of resonant spectra and establishing the relationship between the resonator parameters and the output parameters of the presented prototype is proposed. The results predicted are in agreement with the experimental data. The prototype gyroscope demonstrates a scale factor instability and a change in the average signal level, which is due to the presence of polarization non-reciprocity, occurring due to the induced birefringence in the single-mode fiber of the contour. This problem requires further investigation to be performed.

AB - Reducing the dimensions of optical gyroscopes is a crucial task and resonant fiber optic gyroscopes are promising candidates for its solution. The paper presents a prototype of a miniature resonant interferometric gyroscope of a strategic accuracy class. Due to the use of passive optical elements in this gyroscope, it has a great potential for miniaturization, alongside a low production cost and ease of implementation, since it does not require many feedback loops. The presented prototype shows results on a zero instability of 20°/h and an angle random walk of 0.16°/√h. A theoretical model explaining the nature of the multipath interference of resonant spectra and establishing the relationship between the resonator parameters and the output parameters of the presented prototype is proposed. The results predicted are in agreement with the experimental data. The prototype gyroscope demonstrates a scale factor instability and a change in the average signal level, which is due to the presence of polarization non-reciprocity, occurring due to the induced birefringence in the single-mode fiber of the contour. This problem requires further investigation to be performed.

KW - fiber optical ring resonator

KW - fiber optic gyroscope

KW - polarization

KW - resonant fiber optic gyroscope

KW - 3 × 3 directional coupler

KW - multibeam interference

UR - https://www.mdpi.com/1424-8220/23/3/1319

M3 - Article

VL - 23

JO - Sensors

JF - Sensors

SN - 1424-3210

IS - 3

M1 - 1319

ER -