A Large-Range Steering Optical Phased Array Chip and High-Speed Controlling System

Tao, Min; Peng, Tao; Ding, Changchun; Guan, Jian; Zhang, Lanxuan; Chen, Bo-Song; Gao, Liangli; Li, Xueyan; Song, Jun; Gao, Fengli

doi:10.1109/tim.2021.3139692

Cited by 10 publications

(4 citation statements)

References 40 publications

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“…The SVM, as a powerful machine learning algorithm that seeks a balance between the model's learning ability and the complexity of the approximation function by minimizing structural risk, thereby improving the model's generalization ability. SVM has the advantages of simple structure, fast learning speed, need small sample data, as well as can effectively solve the nonlinear regression problem, which makes it widely used in areas such as classification, regression, and anomaly detection [30, 31]. The structure diagram of the SVM is shown in Figure 5.…”

Section: Experiments and Methodsmentioning

confidence: 99%

Quantitative detection of aging damage of solid propellant based on frequency impedance spectroscopy combined with CARS‐SVM algorithm

Duan,

Wang,

Zhang

et al. 2024

Propellants Explo Pyrotec

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Solid propellant, as the energy source for solid rocket engines, it is of great significance to achieve accurate quantitative detection of aging damage of solid propellant. In this paper, a novel approach based on frequency impedance spectroscopy impedance combined with CARS‐SVM algorithm was proposed. First, the temperature, humidity, and pressure of environmental information around the solid rocket motor were sampled, and then the impedance at corresponding frequencies of the propellant was obtained by AD5933 chip. Second, the processed experimental data were subjected to abnormal sample detection before further variables selection using uninformative variables elimination (UVE) competitive adaptive reweighted sampling (CARS), respectively. Finally, support vector machine (SVM), UVE‐SVM and CARS‐SVM quantitative calibration methods were established. The results showed that the determination coefficient (R2), root mean square error (RMSE), and mean absolute percentage error (MAPE) of CARS‐SVM model were 0.9919, 0.7540, and 0.0480, respectively. Therefore, the results prove that impedance of solid propellant combined with CARS‐SVM model can effectively achieve high precision quantitative detection of aging damage of solid propellant, which lays a new method for the application of solid propellants aging damage in the online quantitative detection.

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Section: Experiments and Methodsmentioning

confidence: 99%

Quantitative detection of aging damage of solid propellant based on frequency impedance spectroscopy combined with CARS‐SVM algorithm

Duan,

Wang,

Zhang

et al. 2024

Propellants Explo Pyrotec

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“…Most integrated OPAs reported are based on the thermo-optic (TO) effect [16], [17]. The TO phase shifter varies the temperature of the waveguide via current control.…”

Section: Optical Phased Arraymentioning

confidence: 99%

Development of a highly-efficient amplifier system for 10-channel satellite laser communication in the context of the HydRON project

Büttner

Hochheim

Brockmüller

et al. 2023

International Conference on Space Optics — ICSO 2022

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LIDARs are considered a key enabling technology for an array of applications in space, including celestial body approach, landing, rendezvous and docking, space debris identification and CubeSat constellations. Reliability, low cost and low size, weight and power (SWaP) are critical factors for these applications. Current spaceborne LIDAR systems are based on discrete optical components. These systems consume a lot of power and are bulky. In this work, a hybrid integrated (FMCW) LIDAR system operating at 1550 nm and based on an indium phosphide (InP) and silicon nitride (Si3N4) platform along with an external erbium-doped fiber amplifier (EDFA) compact module is proposed. By using a telecom-wavelength laser with an ultra-narrow linewidth of 1 kHz, and a 1D optical phased array (OPA) using lead zirconate titanate (PZT) phase shifters, the proposed PIC microlidar can operate up to 100 km. In order to realize small beam divergence, a 1x100 linear array consisting of 4 mm Si3N4 dual-layer grating antennas with a coupling efficiency of up to 80% of the incident power is utilized.

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“…Compared with mechanical LiDAR and hybrid solid-state LiDAR, there are no mechanical components in the OPA. OPA can achieve stable, accurate, fast beam deflection and arbitrary beam pointing [ 11 , 18 ], which can improve the robustness of LiDAR equipment. The current research on 1-D OPA is already mature and there are also excellent results on 2-D OPA [ 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

“…1-D OPA is divided into two mechanisms: end emission and grating emission. Compared with OPA based on liquid crystals (LC) and a micro-electromechanical system (MEMS), OPA based on silicon photon platforms can achieve a larger scanning range and faster scanning speeds [ 18 , 21 , 25 , 26 , 27 ]. In addition, OPA based on the photonic integrated chip (PIC) is compatible with complementary metal-oxide semiconductor (CMOS) technology and can be fabricated on a large scale by highly mature CMOS technology with the advantages of high production and low cost [ 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Beam Steering Technology of Optical Phased Array Based on Silicon Photonic Integrated Chip

Wang,

Song,

et al. 2024

Micromachines

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Light detection and ranging (LiDAR) is widely used in scenarios such as autonomous driving, imaging, remote sensing surveying, and space communication due to its advantages of high ranging accuracy and large scanning angle. Optical phased array (OPA) has been studied as an important solution for achieving all-solid-state scanning. In this work, the recent research progress in improving the beam steering performance of the OPA based on silicon photonic integrated chips was reviewed. An optimization scheme for aperiodic OPA is proposed.

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A Large-Range Steering Optical Phased Array Chip and High-Speed Controlling System

Cited by 10 publications

References 40 publications

Quantitative detection of aging damage of solid propellant based on frequency impedance spectroscopy combined with CARS‐SVM algorithm

Quantitative detection of aging damage of solid propellant based on frequency impedance spectroscopy combined with CARS‐SVM algorithm

Development of a highly-efficient amplifier system for 10-channel satellite laser communication in the context of the HydRON project

Beam Steering Technology of Optical Phased Array Based on Silicon Photonic Integrated Chip

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