Analysis and Improvement of Frequency Stabilization Characteristics of a Total Reflection Prism Laser Gyro

Tao, Yuanbo; Li, Sihai; Liu, Shiming

doi:10.1109/access.2018.2880569

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…The application of TIR combined with Light-Emitting Diodes (LEDs) effectively enhances the efficiency of light energy, which utilizes the evanescent wave in a TIR setup coupled with a conductive interface [ 40 ]. Besides, the design of the following applications involves TIR theory, for example the polarizing prism [ 41 ], total internal reflection fluorescence microscopy [ 42 ], the total reflection prism laser gyro [ 43 ], etc. These works inspired us to introduce TIR theory in the design of the bilayer micropyramid structure photonic nanojet.…”

Section: Introductionmentioning

confidence: 99%

Novel Bilayer Micropyramid Structure Photonic Nanojet for Enhancing a Focused Optical Field

Liu

Zhang

et al. 2021

Nanomaterials

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In this paper, synthetically using refraction, diffraction, and interference effects to achieve free manipulation of the focused optical field, we firstly present a photonic nanojet (PNJ) generated by a micropyramid, which is combined with multilayer thin films. The theory of total internal reflection (TIR) was creatively used to design the base angle of the micropyramid, and the size parameters and material properties of the microstructure were deduced via the expected optical field distribution. The as-designed bilayer micropyramid array was fabricated by using the single-point diamond turning (SPDT) technique, nanoimprint lithography (NIL), and proportional inductively coupled plasma (ICP) etching. After the investigation, the results of optical field measurement were highly consistent with those of the numerical simulation, and they were both within the theoretical calculation range. The bilayer micropyramid array PNJ enhanced the interference effect of incident and scattered fields; thus, the intensity of the focused light field reached 33.8-times that of the initial light, and the range of the focused light field was extended to 10.08λ. Moreover, the full width at half maximum (FWHM) of the focal spot achieved was 0.6λ, which was close to the diffraction limit.

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Section: Introductionmentioning

confidence: 99%

Novel Bilayer Micropyramid Structure Photonic Nanojet for Enhancing a Focused Optical Field

Liu

Zhang

et al. 2021

Nanomaterials

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“…Laser strapdown inertial navigation system has become the mainstream of medium and high precision inertial navigation systems, and its core component is laser gyro [1]- [4]. Total reflection prism laser gyros (TRPLGs) are mainly used in aviation, aerospace and railway measurement fields [5], [6]. The I42-1-C strapdown inertial navigation system based on TRPLG has been widely used in civil aircraft IL-96-300 and TU-204 [7].…”

Section: Introductionmentioning

confidence: 99%

A Method for Improving Light Intensity Stability of a Total Reflection Prism Laser Gyro Based on Series Correction and Feedforward Compensation

Tao

et al. 2020

IEEE Access

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The instability of scale factor and null shift are closely related to the change of the light intensity of a total reflection prism laser gyro (TRPLG). To improve the light intensity stability, the light intensity stabilization principle of TRPLG was analyzed, and a mathematical model of light intensity stabilization system was established. Aiming at the problem that original system has a long adjustment time, a series correction method of adding a proportional integral differential (PID) link in the forward channel was adopted. According to the third-order optimal design, the original I-type third-order overdamped system was optimized to the new II-type third-order underdamped system, which ultimately improved the system's dynamic and steady-state performance. Feedforward compensation was used to introduce the light intensity disturbance during the longitudinal mode hopping into the closed-loop system, which realized the full compensation of the light intensity error and improved the light intensity characteristics during the longitudinal mode hopping. Combined with the above two methods, experimental results showed that the new system with feedforward compensation improved the light intensity stability by 32% at constant temperature and by 40% at variable temperature, with the TRPLG's bias stability improved by more than 16% at constant temperature and by 22% at variable temperature.

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Suppression of Back-Reflection From the End Face of Si₃N₄ Waveguide Resonator

Feng

Liu

et al. 2021

IEEE Access

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Analysis and Improvement of Frequency Stabilization Characteristics of a Total Reflection Prism Laser Gyro

Cited by 3 publications

References 18 publications

Novel Bilayer Micropyramid Structure Photonic Nanojet for Enhancing a Focused Optical Field

Novel Bilayer Micropyramid Structure Photonic Nanojet for Enhancing a Focused Optical Field

A Method for Improving Light Intensity Stability of a Total Reflection Prism Laser Gyro Based on Series Correction and Feedforward Compensation

Suppression of Back-Reflection From the End Face of Si₃N₄ Waveguide Resonator

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Analysis and Improvement of Frequency Stabilization Characteristics of a Total Reflection Prism Laser Gyro

Cited by 3 publications

References 18 publications

Novel Bilayer Micropyramid Structure Photonic Nanojet for Enhancing a Focused Optical Field

Novel Bilayer Micropyramid Structure Photonic Nanojet for Enhancing a Focused Optical Field

A Method for Improving Light Intensity Stability of a Total Reflection Prism Laser Gyro Based on Series Correction and Feedforward Compensation

Suppression of Back-Reflection From the End Face of Si3N4 Waveguide Resonator

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Suppression of Back-Reflection From the End Face of Si₃N₄ Waveguide Resonator