Interferometric Air-Core Anti-Resonant Fiber Optic Gyroscope With Enhanced Thermal Stability

Article Optics

Angular velocity measurement with wide range based on dual-comb Sagnac interferometer

Ruyu Ma et al.

Summary: A dual-comb Sagnac interferometer-based angular velocity measurement system is proposed in this paper, which offers a larger dynamic range and provides higher accuracy and faster speed for angular velocity measurements.

OPTICS LETTERS (2022)

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Article Optics

Towards high-power mid-IR light source tunable from 3.8 to 4.5 μm by HBr-filled hollow-core silica fibres

Zhiyue Zhou et al.

Summary: This study reports the efficient mid-IR laser emission achieved using HBr-filled silica hollow-core fibers, with a breakthrough in the longest emission wavelength and largest tuning range. It opens new opportunities for the development of broadly tunable high-power mid-IR fiber lasers.

LIGHT-SCIENCE & APPLICATIONS (2022)

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Article Optics

Navigation-grade resonant fiber-optic gyroscope using ultra-simple white-light multibeam interferometry

Shuangxiang Zhao et al.

Summary: The miniaturization of the gyroscope is crucial for various applications such as spacecrafts and drones. The resonant fiber-optic gyroscope (RFOG) shows potential for miniaturization and high resolution, but its performance is affected by laser-induced noise and complexity. In this study, we present a navigation-grade RFOG with improved performance achieved by driving it with a broadband light source and using a simplified scheme.

PHOTONICS RESEARCH (2022)

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Article Engineering, Electrical & Electronic

Evaluation and Suppression of the Effect of Laser Frequency Noise on Resonant Fiber Optic Gyroscope

Lu Liu et al.

Summary: This article presents a novel method to analyze the impact of laser frequency noise on a resonant fiber optic gyroscope (RFOG). A theoretical model is established to evaluate and verify the effect of laser frequency noise on the RFOG. The study shows that laser frequency noise deteriorates the stability of the gyroscope, and the reciprocal modulation-demodulation technique improves the measurement accuracy of the RFOG.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2022)

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Article Optics

Resonant fiber optic gyroscope using a reciprocal modulation and double demodulation technique

Lu Liu et al.

Summary: A resonant fiber optic gyroscope (RFOG) with a reciprocal modulation and double demodulation technique based on a single laser source is proposed and demonstrated. The residual amplitude modulation of the phase modulator is effectively suppressed thanks to the reciprocal modulation and demodulation. In addition, the backscattering noise is eliminated through the double demodulation process. The long-term bias stability of the RFOG is successfully improved to 0.2 degrees/h for a test time of 45 hours.

OPTICS EXPRESS (2022)

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Article Optics

Wavelength-dependence reduction of the scale factor for tactical-grade fiber optic gyroscopes

Linghai Kong et al.

Summary: In this study, a simple yet effective technique is proposed to reduce the wavelength dependence of the scale factor in fiber optic gyroscopes. By using the size of the digital-ramp register as the actuator, the technique successfully decreases the compensated scale-factor inaccuracy to 282 ppm, compared to 2065 ppm in the conventional case. This approach relaxes the stringent wavelength stability requirements of the super-luminescent diode (SLD), enabling the large-scale production and application of tactical-grade FOGs.

OPTICS EXPRESS (2022)

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Article Optics

Impact of cladding elements on the loss performance of hollow-core anti-resonant fibers

Md Selim Habib et al.

Summary: Understanding the impact of the cladding tube structure on the guiding performance of hollow-core fiber is crucial. By optimizing the nested elements and their geometry, significant improvements in propagation loss can be achieved. The novel fiber design shows promise for applications in optical communication systems and nonlinear optics.

OPTICS EXPRESS (2021)

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Article Optics

Hollow-core resonator fiber optic gyroscope using nodeless anti-resonant fiber

Glen A. Sanders et al.

Summary: The research successfully improved the stability of the hollow-core fiber optic gyroscope using high-performance fiber technology, nearing the level required for civil aircraft navigation.

OPTICS LETTERS (2021)

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Article Optics

Epsilon negative-based, broadband single-polarization single-mode hollow core anti-resonant photonic crystal fiber

Shidi Liu et al.

Summary: This paper proposes a new type of broadband single-polarization single-mode hollow core anti-resonant photonic crystal fiber (HC-ARPCF) for polarization maintaining and high-power laser systems. By optimizing the design parameters, the fiber achieves SPSM behavior with a large loss difference, as well as a large effective mode area and near-zero dispersion properties across the entire operation bandwidth.

OPTICS EXPRESS (2021)

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Article Engineering, Electrical & Electronic

Three-Dimensional Topological Reconstruction of the Sensing Coil of a Fiber-Optic Gyroscope Using X-Ray Computed Tomography

Jeremie Pillon et al.

Summary: The study focuses on the precise topological reconstruction of the sensing coil of a fiber-optic gyroscope using X-ray computed tomography. It evaluates the quality of the winding, quantifies crossovers and layer transition fibers, and highlights winding defects.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2021)

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Article Optics