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Relevant bibliographies by topics / Optical phased array (OPA)

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Journal articles

Academic literature on the topic 'Optical phased array (OPA)'

Author: Grafiati

Published: 30 November 2024

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Journal articles on the topic "Optical phased array (OPA)"

1

Liu, Qiankun, Tom Smy, Ahmad Atieh, Pavel Cheben, Alejandro Sánchez-Postigo, and Winnie N. Ye. "Integrated circular optical phased array." EPJ Web of Conferences 255 (2021): 01004. http://dx.doi.org/10.1051/epjconf/202125501004.

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Existing OPAs are typically based on 2D rectangular arrays or 1D linear arrays. Both approaches present a limited field-of-view (FOV) due to the presence of the grating lobes when the element spacing is larger than λ/2. To address the need for an increased steering range, we propose a new design strategy of an OPA system utilizing a 2D circular phased array, with a substantially increased FOV. We present a circular OPA using a demonstrated antenna element design, with an 820-element array. A steering range ΩSR calculated as a solid angle of 0.51π sr, and an angular beamwidth of 0.22°, was achi

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2

Wang, Zheng, Yibo Yang, Ruiting Wang, et al. "Improved SPGD Algorithm for Optical Phased Array Phase Calibration." Applied Sciences 12, no. 15 (2022): 7879. http://dx.doi.org/10.3390/app12157879.

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A chip-level optical beam steerer is an inevitable choice for next-generation light detection and ranging (LiDAR). The research on optical phased array (OPA) is the most intriguing. However, the complexity of control and calibration speed limit the full potential as the number of channels increases. In this paper, an improved stochastic parallel gradient-descent algorithm combined with the Nesterov accelerated gradient method (NSPGD) is presented and applied in a 512-channel OPA. This algorithm can reduce the phase calibration time of large-scale OPA and demonstrates a better convergence perfo

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3

Yue, Jian, Anqi Cui, Fei Wang, et al. "Design of Monolithic 2D Optical Phased Arrays Heterogeneously Integrated with On-Chip Laser Arrays Based on SOI Photonic Platform." Micromachines 13, no. 12 (2022): 2117. http://dx.doi.org/10.3390/mi13122117.

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In this work, heterogeneous integration of both two-dimensional (2D) optical phased arrays (OPAs) and on-chip laser arrays based on a silicon photonic platform is proposed. The tunable multi-quantum-well (MQW) laser arrays, active switching/shifting arrays, and grating antenna arrays are used in the OPA module to realize 2D spatial beam scanning. The 2D OPA chip is composed of four main parts: (1) tunable MQW laser array emitting light signals in the range of 1480–1600 nm wavelengths; (2) electro-optic (EO) switch array for selecting the desired signal light from the on-chip laser array; (3) E

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4

Nguyen, Anh-Hang, and Hyuk-Kee Sung. "Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array." Photonics 9, no. 11 (2022): 868. http://dx.doi.org/10.3390/photonics9110868.

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Relative intensity noise (RIN) is an important factor that determines the performance of optical phased arrays (OPA) that are configured using semiconductor lasers as light emission sources. This study proposes a method of improving the optical signal-to-noise ratio (OSNR) of an OPA by reducing the RIN and using high coherence of optically injection-locked (OIL) laser arrays. We numerically demonstrated a laser RIN reduction of 22.7 dB by the OIL laser compared to a free-running laser. We achieved an OPA RIN reduction of 13.2 dB by combining the coherent outputs with the uncorrelated noise of

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5

Lei, Yufang, Lingxuan Zhang, Yulong Xue, et al. "Suppressing grating lobes of large-aperture optical phased array with circular array design." Applied Optics 62, no. 15 (2023): 4110. http://dx.doi.org/10.1364/ao.488916.

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An optical phased array (OPA), especially a two-dimensional (2D) OPA, suffers from the trade-off among steering range, beam width, and the number of antennas. Aperiodic 2D array designs currently aimed to reduce the number of antennas and reduce grating lobes within a wide range fall short when an aperture approaches millimeter size. A circular OPA design is proposed to address this issue. The circular design substantially reduces the number of antennas while achieving the same wide steering range and narrow beam width of optimized aperiodic 2D OPA designs. Its efficient suppression of grating

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6

Chen, Jingye, Shi Zhao, Wenlei Li, Xiaobin Wang, Xiang’e Han, and Yaocheng Shi. "Silicon Optical Phased Array Hybrid Integrated with III–V Laser for Grating Lobe-Free Beam Steering." Photonics 11, no. 10 (2024): 952. http://dx.doi.org/10.3390/photonics11100952.

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A silicon photonics-based optical phased array (OPA) is promising for realizing solid-state and miniature beam steering. In our work, a 1 × 16 silicon optical phased array (OPA) hybrid integrated with a III–V laser is proposed and demonstrated. The III–V laser chip is vertically coupled with a silicon OPA chip based on a chirped grating coupler with a large bandwidth. The coupling efficiency reaches up to 90% through utilizing the metal reflector underneath the silicon oxide layer. The one-dimensional antenna array comprising silicon waveguides with half-wavelength spacing enables beam steerin

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7

Wang, Zhicheng, Junbo Feng, Haitang Li, et al. "Ultra-Compact and Broadband Nano-Integration Optical Phased Array." Nanomaterials 13, no. 18 (2023): 2516. http://dx.doi.org/10.3390/nano13182516.

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The on-chip nano-integration of large-scale optical phased arrays (OPAs) is a development trend. However, the current scale of integrated OPAs is not large because of the limitations imposed by the lateral dimensions of beam-splitting structures. Here, we propose an ultra-compact and broadband OPA beam-splitting scheme with a nano-inverse design. We employed a staged design to obtain a T-branch with a wavelength bandwidth of 500 nm (1300–1800 nm) and an insertion loss of −0.2 dB. Owing to the high scalability and width-preserving characteristics, the cascaded T-branch configuration can signifi

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8

Nguyen, Anh-Hang, Jun-Hyung Cho, and Hyuk-Kee Sung. "Theoretical Demonstration of Security Improvement of Optical Phased Array Based on Optically Injection-Locked Lasers." Photonics 8, no. 11 (2021): 469. http://dx.doi.org/10.3390/photonics8110469.

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The high security of optical phased array (OPA) signals is an important requirement for OPA-based optical wireless communication (OWC). We propose a method for improving the security of OPA-based OWC systems using optically injection-locked (OIL) semiconductor lasers. We theoretically demonstrate the amplitude and phase modulation of OIL-OPA elements by controlling the injection-locking parameters of the OIL lasers. When a Taylor window function is applied as the amplitude profile of the OPA transmitter, the sidelobe level decreases by 22 dB and the unsecured distance reduces 10 times compared

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9

Liu, Qiankun, Daniel Benedikovic, Tom Smy, Ahmad Atieh, Pavel Cheben, and Winnie N. Ye. "Circular Optical Phased Arrays with Radial Nano-Antennas." Nanomaterials 12, no. 11 (2022): 1938. http://dx.doi.org/10.3390/nano12111938.

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On-chip optical phased arrays (OPAs) are the enabling technology for diverse applications, ranging from optical interconnects to metrology and light detection and ranging (LIDAR). To meet the required performance demands, OPAs need to achieve a narrow beam width and wide-angle steering, along with efficient sidelobe suppression. A typical OPA configuration consists of either one-dimensional (1D) linear or two-dimensional (2D) rectangular arrays. However, the presence of grating sidelobes from these array configurations in the far-field pattern limits the aliasing-free beam steering, when the a

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10

Zhao, Shi, Jingye Chen, and Yaocheng Shi. "All-Solid-State Beam Steering via Integrated Optical Phased Array Technology." Micromachines 13, no. 6 (2022): 894. http://dx.doi.org/10.3390/mi13060894.

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Light detection and ranging (LiDAR), combining traditional radar technology with modern laser technology, has much potential for applications in navigation, mapping, and so on. Benefiting from the superior performance, an all-solid-state beam steering realized by integrated optical phased array (OPA) is one of the key components in the LiDAR system. In this review, we first introduce the basic principle of OPA for beam steering. Then, we briefly review the detailed advances of different solutions such as micro-electromechanical system OPA, liquid crystal OPA, and metasurface OPA, where our mai

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