Suppression Method of Optical Noises in Resonator-Integrated Optic Gyroscopes

Kuai, Xuebao; Wei, Lei; Yang, Fuhua; Yan, Wei; Li, Zhaofeng; Wang, Xiaodong

doi:10.3390/s22082889

Cited by 9 publications

(5 citation statements)

References 97 publications

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“…Various types of cavities (integrated optical, fiber optical, and whispering gallery mode resonators), which can be used as a sensitive element of a miniature optical resonant gyroscope are found in international publications [ 2 , 4 ]. The problem with implementing a resonant gyroscope is that it is not possible to directly measure the displacement of the resonant frequency; therefore, it is necessary to use various methods for detecting the angular velocity.…”

Section: The Sagnac Effect In a Ring Optical Resonatormentioning

confidence: 99%

“…The solution to the problem can be the use of large and expensive radiation sources and an increase in the overall dimensions of the optical gyroscope due to the need to use thermal insulation materials. In addition, a narrow-band laser is highly coherent, and as a result, parasitic effects appear in the optical scheme, complicating the measurement of angular velocity; for example, Rayleigh backscattering and the Kerr effect [ 2 ].…”

Section: The Sagnac Effect In a Ring Optical Resonatormentioning

confidence: 99%

“…A decrease in the overall dimensions of the RLG entails an increase in the dead zone of the gyroscope. A resonant contour of optical gyroscopes is a new step in the development of optical gyroscopy, as is evidenced by recent research and the development of resonant gyroscopes [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Prototype for a Passive Resonant Interferometric Fiber Optic Gyroscope with a 3 × 3 Directional Coupler

Ovchinnikov

Gilev

Криштоп

et al. 2023

Sensors

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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.

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Section: The Sagnac Effect In a Ring Optical Resonatormentioning

confidence: 99%

Section: The Sagnac Effect In a Ring Optical Resonatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Prototype for a Passive Resonant Interferometric Fiber Optic Gyroscope with a 3 × 3 Directional Coupler

Ovchinnikov

Gilev

Криштоп

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Some detailed methods have been proposed in Refs. [132,138,153,[321][322][323][324][325][326][327][328][329].…”

Section: Outlook For Applicationsmentioning

confidence: 99%

Integrated photonic chips based on Sagnac interference

Juodkazis¹,

Moss²,

Wu³

et al. 2023

Preprint

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As a fundamental optical approach to interferometry, Sagnac interference has been widely used for reflection manipulation, precision measurements, and spectral engineering in optical systems. Compared to other interferometry configurations, it offers attractive advantages by yielding a reduced system complexity without the need for phase control between different pathways, thus offering a high degree of stability against external disturbance and a low wavelength dependence. The advance of integration fabrication techniques has enabled chip-scale Sagnac interferometers with greatly reduced footprint and improved scalability compared to more conventional approaches implemented by spatial light or optical fiber devices. This facilitates a variety of integrated photonic devices with bidirectional light propagation, showing new features and capabilities compared to unidirectional-light-propagation devices such as Mach-Zehnder interferometers (MZIs) and ring resonators (RRs). This paper reviews functional integrated photonic devices based on Sagnac interference. First, the basic theory of integrated Sagnac interference devices is introduced, together with comparisons to other integrated photonic building blocks such as MZIs, RRs, photonic crystal cavities, and Bragg gratings. Next, the applications of Sagnac interference in integrated photonics, including reflection mirrors, optical gyroscopes, basic filters, wavelength (de)interleavers, optical analogues of quantum physics, and others, are systematically reviewed. Finally, the open challenges and future perspectives are discussed.

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“…Optical signals with close intensities can achieve high optical heterodyne beat efficiency [8,9]. In addition, in the resonant cavity, the difference in light intensity between the CW and CCW lights will cause phase differences due to the Kerr effect, which will affect their resonant frequency and beat frequency [10][11][12]. If the difference between the CW and CCW light intensity changes continuously, a frequency jitter will be introduced into the beat signal, equivalent to introducing noise during frequency detection.…”

Section: Introductionmentioning

confidence: 99%

Intensity Equalization of Bidirectional Fiber Laser Based on a Non-Reciprocal Optical Attenuator

Wang

et al. 2023

Sensors

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The application of a bidirectional laser requires the laser intensity in both directions to be balanced. However, the CW and CCW light intensities in current bidirectional erbium-doped fiber laser experiments differ due to the gain competition effect. There is no report on equalizing the intensity in the CW and CCW directions. This paper proposes a bidirectional non-reciprocal optical attenuator using the Faraday optical rotation effect. Continuous attenuation adjustment is realized by changing the angle between the polarizer’s transmission axis and the linear polarized light. In this study, we analyzed the influence of different parameters on the device’s performance, built a non-reciprocal attenuator, and tested the bidirectional attenuation curve, which was consistent with the simulation results. The device was integrated into a bidirectional fiber laser, and the light intensity in both directions was balanced through non-reciprocal adjustment. Combined with closed-loop control, the average intensity difference fluctuation between the two directions was controlled at 0.28% relative to the average power, realizing stable long-term bidirectional fiber laser intensity equalization.

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Suppression Method of Optical Noises in Resonator-Integrated Optic Gyroscopes

Cited by 9 publications

References 97 publications

A Prototype for a Passive Resonant Interferometric Fiber Optic Gyroscope with a 3 × 3 Directional Coupler

A Prototype for a Passive Resonant Interferometric Fiber Optic Gyroscope with a 3 × 3 Directional Coupler

Integrated photonic chips based on Sagnac interference

Intensity Equalization of Bidirectional Fiber Laser Based on a Non-Reciprocal Optical Attenuator

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