Silicon Integrated Interferometric Optical Gyroscope

Wu, Beibei; Yu, Yu; Xiong, Jiabi; Zhang, Chi

doi:10.1038/s41598-018-27077-x

Cited by 39 publications

(16 citation statements)

References 28 publications

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“…Photonic integrated circuits (PICs) are widely employed in the field of data- and telecommunication 1 , and have gained much attention in various other fields of application such as bio-medical and chemical sensing 2,3 , optical gyroscopes 4,5 , optical coherence tomography 6,7 , and astronomy 8 . Most of these PICs rely either on an external coupling of coherent light into the chip, which can be achieved for example by end-facet 9 or grating coupling 10,11 , or the heterogeneous integration of a semiconductor laser through bonding.…”

Section: Introductionmentioning

confidence: 99%

Slot-Waveguide Silicon Nitride Organic Hybrid Distributed Feedback Laser

Vogelbacher

Sagmeister

Kraft

et al. 2019

Sci Rep

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One of the major barriers for a widespread commercial uptake of silicon nitride photonic integrated circuits for cost-sensitive applications is the lack of low-cost monolithically integrated laser light sources directly emitting into single-mode waveguides. In this work, we demonstrate an optically pumped organic solid-state slot-waveguide distributed feedback laser designed for a silicon nitride organic hybrid photonic platform. Pulsed optical excitation of the gain medium is achieved by a 450 nm laser diode. The optical feedback for lasing is based on a second-order laterally coupled Bragg grating with a slot-waveguide core. Optimized material gain properties of the organic dye together with the increased modal gain of the laser mode arising from the improved overlap of the slot-waveguide geometry with the gain material enable single-mode lasing at a wavelength of 600 nm. The straightforward integration and operation with a blue laser diode leads to a cost-effective coherent light source for photonic integrated devices.

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Section: Introductionmentioning

confidence: 99%

Slot-Waveguide Silicon Nitride Organic Hybrid Distributed Feedback Laser

Vogelbacher

Sagmeister

Kraft

et al. 2019

Sci Rep

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“…Optical gyroscopes have been widely used in strap-down inertial navigation systems (SINS) [1,2], in which fiber optic gyroscopes (FOGs) have become ideal sensors because of their low cost, light weight, high reliability, easy integration, and high accuracy [3]. FOGs are based on the Sagnac effect, which is mainly composed of a light source, a phase modulator, a fiber coil, a detector, and a coupler, each of which can generate noise [4].…”

Section: Introductionmentioning

confidence: 99%

A Gyroscope Signal Denoising Method Based on Empirical Mode Decomposition and Signal Reconstruction

Liu

Yang

Shi

et al. 2019

Sensors

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To suppress the random drift error of a gyroscope signal, this paper proposes a novel denoising method, which is based on processing the intrinsic mode functions (IMFs) obtained by empirical mode decomposition (EMD). Considering that a gyroscope signal contains colored noise in addition to Gaussian white noise, fractal Gaussian noise (FGN) was introduced to quantify the noise in the gyroscope data. The proposed denoising method combines the FGN energy model and the modified method of Hausdorff distance (HD) to adaptively divide the IMFs into three categories (pure noise, pure information, and mixed components of noise and information). Then, the information IMFs and the mixed components after thresholding were selected to give the optimal signal reconstruction. Static and dynamic signal tests of the fiber optic gyroscope (FOG) were carried out to illustrate the performance of the proposed method, and compared with other traditional EMD denoising methods, such as the Euclidean norm measure method (EMD-l2-norm) and the sliding average filtering method (EMD-SA). The results of the analysis of both the static and dynamic signal tests indicate the effectiveness of the proposed method.

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“…However, both the Fiber Optic Gyroscope (FOG) and Ring Laser Gyroscope (RLG) have some serious disadvantages, as they are bulky, expensive, and energy intensive [5,6,7,8]. In order to overcome these shortcomings in traditional optical gyroscopes, the Micro Optic Gyroscope (MOG), which includes the Resonant Integrated Optic Gyroscope (RIOG) and the Interferometric Integrated Optical Gyroscope (IIOG), based on a waveguide ring resonator (WRR) was proposed [9,10,11,12,13,14,15,16]. The interferometric optical gyroscope is restricted by the transmission loss of the waveguide.…”

Section: Introductionmentioning

confidence: 99%

Asymmetry Analysis of the Resonance Curve in Resonant Integrated Optical Gyroscopes

Yan

et al. 2019

Sensors

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The Resonant Integrated Optic Gyroscope (RIOG) is a type of high accuracy gyroscope based on the Sagnac effect. A symmetrical resonance curve is very important to the performance of the RIOG. To further investigate and design a RIOG with a waveguide ring resonator, an in-depth research of the asymmetric resonance curve and its influence on the RIOG is fully developed. Four possible optical noises inducing the resonance curve asymmetry are analyzed and their mathematic models are established. These four optical noises are the normal mode effect, the backscattering noise, the backreflection noise and the polarization noise. Any asymmetry of the resonance curve will not only induce a large output bias error into the gyro output, but also seriously decrease the frequency discrimination parameter of the demodulation curve. By using a tunable fiber laser, the high aspect ratio silicon nitride WRR and the silicon dioxide WRR were tested. The experiment measured resonance curves can be well fitted with the theoretical simulation results. The experimental results show that a high aspect ratio silicon nitride waveguide can effectively suppress the polarization noise in the RIOG.

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Silicon Integrated Interferometric Optical Gyroscope

Cited by 39 publications

References 28 publications

Slot-Waveguide Silicon Nitride Organic Hybrid Distributed Feedback Laser

Slot-Waveguide Silicon Nitride Organic Hybrid Distributed Feedback Laser

A Gyroscope Signal Denoising Method Based on Empirical Mode Decomposition and Signal Reconstruction

Asymmetry Analysis of the Resonance Curve in Resonant Integrated Optical Gyroscopes

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