Mr. Zuoliang Duan Profile

Zuoliang Duan

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Proceedings Article | 15 December 2022 Paper

Performance analysis of super multi-view based near-eye light field displays based on Gaussian beam

Jianlei Zhang, Juan Zhang, Zuoliang Duan

Proceedings Volume 12478, 124780C (2022) https://doi.org/10.1117/12.2647357

KEYWORDS: Eye, Gaussian beams, Retina, Point spread functions, 3D displays, Visualization

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The issue of vergence-accommodation conflict in conventional stereoscopic displays has received considerable critical attention due to the lack of monocular focus cue. The super multi-view (SMV) based light field display is potentially capable of providing depth information to a monocular eye. In this paper, the depth resolution of SMV based light field display is deduced. Discrete depth plane can be reproduced by SMV based light field display, which is consistent with the nonuniform depth perception ability of the human eye. The retinal projected spot formation process of SMV based light field display from the display device to visual system is derived using Gaussian beams. The depth characteristic, the optimal choice of Gaussian beam, relationship between the synthetic PSF and viewpoints are discussed by simulation experiment. The present results can contribute to the design of SMV based light field displays with high-quality visual perception.

Proceedings Article | 2 December 2020 Paper

Long-distance underwater optical wireless communication with PPLN wavelength conversion

Yi Yang, Lirong Fan, Fengtao He, Yuqin Song, Zuoliang Duan, Yunzhou Zhu, Bili Li

Proceedings Volume 11717, 117172J (2020) https://doi.org/10.1117/12.2587316

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In this thesis, we designed and experimentally demonstrated a high-power high-speed underwater optical wireless communication (UOWC) system with wavelength conversion construction. External modulation based on 1064nm laser is used for high-speed information communication, as well as the optical amplifier is used to obtain enough optical power of 1064nm laser. After that, according to the quasi-phase-matching (QPM) conditions, the PPLN optical structure is designed to improve the wavelength conversion efficiency for achieving higher 532nm laser output power in 24.5℃~40°C. Compared to the 532nm LD modulation system, this system can output 1.4W 532nm laser power in 100Mbps. This system experiments in single link 100m water tap of the attenuation coefficient 0.73dB/m equivalent to the clear ocean, and the measured bit error rate (BER) is 6.2×10^-6 in 100Mbps pseudo-random binary sequence (PRBS) data without the forward error correction (FEC). Based on receiver sensitivity and the seawater channel optical transmission model, the transmission performance was predicted to be 340m@100Mbps and 100m@2Gbps in the attenuation coefficient equivalent to pure seawater.

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