Research on Novel Antimony Sulfide Detectors for Underwater Visible Light Communication

ZHU Jia-wei; QI Bao-liang; WANG Xing-jian; TANG Rong-xin; YU Li-su; WANG Zheng-hai; DENG Hui; WU Zhi-xu; XIA Yong; WANG Yu-hao

doi:10.13756/j.gtxyj.2023.04.012

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Research on Novel Antimony Sulfide Detectors for Underwater Visible Light Communication

更新时间：2023-08-14

- Research on Novel Antimony Sulfide Detectors for Underwater Visible Light Communication
- Study on Optical Communications Issue 4, Pages: 73-78(2023)
- 作者机构：
  
  1.南昌大学　信息工程学院，南昌　330031
  2.福州大学　物理与信息工程学院，福州　350108
  3.南昌大学　空间科学与技术研究院，南昌　330031
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2023.04.012
  CLC： TN929
- Published：10 August 2023，
  
  Received：15 April 2023，
  
  Revised：10 May 2023，
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朱佳伟，漆宝梁，王行健，等.面向水下可见光通信的新型硫化锑探测器研究[J].光通信研究，2023(4):73-78.

Zhu J W, Qi B L, Wang X J, et al. Research on Novel Antimony Sulfide Detectors for Underwater Visible Light Communication [J].Study on Optical Communications, 2023(4):73-78.
朱佳伟，漆宝梁，王行健，等.面向水下可见光通信的新型硫化锑探测器研究[J].光通信研究，2023(4):73-78. DOI： 10.13756/j.gtxyj.2023.04.012.

Zhu J W, Qi B L, Wang X J, et al. Research on Novel Antimony Sulfide Detectors for Underwater Visible Light Communication [J].Study on Optical Communications, 2023(4):73-78. DOI： 10.13756/j.gtxyj.2023.04.012.

摘要

可见光通信（VLC）由于其传输速度快和保密性强等诸多优势已成为了一种行之有效的水下通信技术。光在水下传播时容易发生散射现象，导致光传播的能量随传输距离的增大而减少，因此改善接收端响应度是实现水下VLC的关键和核心。为此，文章首先针对探测器前端设计了一种新型的全息波导聚光系统，可有效提升水下探测器的信噪比；然后，构建了具有弱光探测能力的低成本硫化锑薄膜探测器。在上述基础上搭建VLC系统，实验结果显示，其接收端探测器的暗电流仅为10

-7

A/cm

，3 dB带宽为220 kHz，响应度达0.2 A/W，且在蓝绿光波段的外量子效率超过70%。因此，新型硫化锑薄膜探测器结合全息波导聚光系统可以实现针对可见光的弱光探测，是一种十分有效的水下可见光接收系统。

Abstract

Visible Light Communication (VLC) has become an effective underwater communication technology due to its advantages such as fast transmission speed and strong confidentiality. When light propagates underwater

it is prone to scattering

resulting in a decrease in the energy of light propagation with the increase of transmission distance. Therefore

improving the responsiveness of the receiving end is the key technology to achieve underwater VLC. This article first designs a new holographic waveguide focusing system for the front end of the detector

which can effectively improve the signal-to-noise ratio of underwater detectors. Then

we construct a low-cost antimony sulfide thin film detector with weak light detection capability. Based on the built VLC system

the experimental results show that the dark current of the receiver detector is only 10

-7

A/cm

with a 3 dB bandwidth of 220 kHz

a response of 0.2 A/W

and an external quantum efficiency of over 70% in the blue green light band. Therefore

the new antimony sulfide thin film detector combined with a holographic waveguide focusing system can achieve weak light detection of visible light

making it a very effective underwater visible light receiving system.

关键词

水下可见光通信硫化锑探测器全息光栅光波导

Keywords

underwater VLCSb2S3detectorholographic gratingoptical waveguide

references

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Shah U A, Chen S, Khalaf G M G, et al. Wide Bandgap Sb2S3 Solar Cells [J]. Advanced Functional Materials, 2021, 31(27):2100265.

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Deng H, Cheng Y, Chen Z, et al. Flexible Substrate-Structured Sb2S3 Solar Cells with Back Interface Selenization [J]. Advanced Functional Materials, 2023, 33(12): 2212627.

朱秀丽. 全息波导显示的光能追迹与成像分析[D]. 南京:东南大学, 2020.

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Dou L, Yang Y, You J B, et al. Author Correction: Solution-processed Hybrid Perovskite Photodetectors with High Detectivity [J]. Nature Communications, 2019, 10(1):1866.

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