Changkun Feng, Yonggui Zhang, Honghao Ma, Hui Li, Lishuang Feng. Improving long-term temperature bias stability of an integrated optical gyroscope employing a Si3N4 resonator[J]. Photonics Research, 2022, 10(7): 1661
- Photonics Research
- Vol. 10, Issue 7, 1661 (2022)
Fig. 1. Relationship between gyroscope sensitivity and coupling coefficient at different waveguide propagation losses.
Fig. 2. Variation of the peak value of the resonance curve at different propagation losses.
![(a) According to the polarization model [19] calculated three-dimensional resonance curve output at different birefringences; D=35 mm, σ=30°, ε=3°, αx=αy=0.5 dB/m, kx=ky=0.05, αCx=αCy=0.01 dB. (b) The relationship between the resonance curve of the resonator and the polarization axis error of the incident light; D=35 mm, ε=0°, αx=αy=0.5 dB/m, kx=ky=0.05, αCx=αCy=0.01 dB. (c) When the polarization-dependent loss αy=800 dB/m, the relationship between the resonance curve of the resonator and the polarization axis error of the incident light; D=35 mm, ε=10°, αx=0.5 dB/m, kx=ky=0.05, αCx=αCy=0.01 dB.](/Images/icon/loading.gif){kind=icon}
Fig. 3. (a) According to the polarization model [19] calculated three-dimensional resonance curve output at different birefringences; D = 35 mm σ = 30 ° ε = 3 ° α x = α y = 0.5 dB/ m k x = k y = 0.05 α Cx = α Cy = 0.01 dB D = 35 mm ε = 0 ° α x = α y = 0.5 dB/ m k x = k y = 0.05 α Cx = α Cy = 0.01 dB α y = 800 dB/ m D = 35 mm ε = 10 ° α x = 0.5 dB/ m k x = k y = 0.05 α Cx = α Cy = 0.01 dB
Fig. 4. (a) Structure diagram of the Si 3 N 4
Fig. 5. Infrared photograph of the Si 3 N 4
Fig. 6. Relative test curve of the Si 3 N 4
Fig. 7. Measured resonance curves at different temperatures: (a) Si 3 N 4
Fig. 8. RIOG measurement system based on the Si 3 N 4 LiNbO 3
Fig. 9. Measurement results of the RIOG based on the Si 3 N 4
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