Two-dimensional beam scanning of passive optical phased array based on silicon nitride delay line

Yu, Lei; Wang, Pengfei; Ma, Pengfei; Cui, Langlin; Wang, Zheng; Yang, Yibo; Zhang, Yejin; Pan, Jiaoqing

doi:10.1109/jlt.2023.3239002

Cited by 9 publications

(4 citation statements)

References 40 publications

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“…Optical phased array (OPA)-based Light Detection and Ranging (LiDAR) is a system that actualizes two-dimensional beam steering using phase and wavelength control, achieving the same functionality as traditional radars on a chip [1][2][3][4][5][6]. Due to its high anti-interference ability and response speed, it has broad application prospects in fields such as meteorology and the emerging prospect of autonomous driving, which has recently received significant attention [7][8][9][10][11]. Since the concept of OPAs was first proposed, it has developed rapidly [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The performance begins to suffer when it reaches a certain angle. There are several specially designed structures for weakening or bypassing the impact of the grating lobe, such as irregularly or aperiodically distributing antennas using an optimization algorithm [17,18] and splicing the field of view using optical switching [19,20]. The irregular antenna structures break the interference condition and disperse energy into bottom noise.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Influence of Fabrication Errors on the Far-Field Performance of Si and Si3N4 Antennas

Xin,

Liao,

et al. 2024

Photonics

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Antennas are important components in optical phased arrays. However, their far-field performance deteriorates when random phase noise is introduced because of fabricating errors. For the first time, we use a finite-difference time-domain solution to quantitatively analyze the far-field characteristics of Si and Si3N4 antennas considering process errors. Under rough surface conditions based on a fishbone structure, we find that the quality of the main lobe of the Si antenna deteriorates badly, with −0.87 dB and −0.51 dB decreases in the sidelobe level and 5.78% and 3.74% deteriorations in the main peak power in the φ (phase-controlled) and θ (wavelength-controlled) directions, respectively. However, the Si3N4 antenna is only slightly impacted, with mere 0.39% and 0.71% deteriorations in the main peak power in the φ and θ directions, respectively, which is statistically about 1/15 of the Si antenna in the φ direction and 1/5 in the θ direction. The decreases in the sidelobe level are also slight, at about −0.08 dB and −0.01 dB, respectively. Furthermore, the advantages of the Si3N4 antenna become more remarkable with the introduction of random errors into the waveguide width and thickness. This work is of great significance for the design and optimization of OPA chips.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Fabrication Errors on the Far-Field Performance of Si and Si3N4 Antennas

Xin,

Liao,

et al. 2024

Photonics

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“…LiDAR has gained considerable popularity as an environmental sensing solution in various industries, including automotive, robotics, and aerospace [1][2][3][4][5] . It possesses remarkable attributes, including high scanning speed, high resolution, and the capability to generate three-dimensional images.…”

Section: Introductionmentioning

confidence: 99%

Focal plane array with small-scale grating antenna receiving array for LiDAR

Yu,

Ma,

Wang

et al. 2023

AOPC 2023: AI in Optics and Photonics

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“…At the same time, the efficient compatibility of silicon on insulator (SOI) platforms and complementary metal oxide semiconductor (COMS) technology makes silicon photonic technology conducive to large-scale integration [11]. Therefore, the OPA based on a silicon photonic platform has become a research hotspot [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Intensive and Efficient Design of a Two-dimensional 8 × 8 Silicon-Based Optical Phased Array Transceiver

Zhang,

Wang,

Liu

et al. 2023

Sensors

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In recent years, the silicon-based optical phased array has been widely used in the field of light detection and ranging (LIDAR) due to its great solid-state steering ability. At the same time, the optical phased array transceiver integration scheme provides a feasible solution for low-cost information exchange of small devices in the future. Based on this, this paper designs a two-dimensional optical phased array transceiver with high efficiency and a large field of view, which can realize a dense array with antenna spacing of 5.5 μm × 5.5 μm by using low crosstalk waveguide wiring. Additionally, it can realize the conversion between the receiving mode and the transmitting mode by using the optical switch. The simulation results show that the scanning range of 16.3° × 16.3° can be achieved in the transmitting mode, and the overall loss is lower than 10dB. In the receiving mode, we can achieve a collection efficiency of more than 27%, and the antenna array receiving loss is lower than 12.1 dB.

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Two-dimensional beam scanning of passive optical phased array based on silicon nitride delay line

Cited by 9 publications

References 40 publications

Analysis of the Influence of Fabrication Errors on the Far-Field Performance of Si and Si3N4 Antennas

Analysis of the Influence of Fabrication Errors on the Far-Field Performance of Si and Si3N4 Antennas

Focal plane array with small-scale grating antenna receiving array for LiDAR

Intensive and Efficient Design of a Two-dimensional 8 × 8 Silicon-Based Optical Phased Array Transceiver

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