Ultralow Photon Flux OWC Links Using UV-C Single-Photon Detection

IF 10 1区物理与天体物理 Q1 OPTICS

Laser & Photonics Reviews Pub Date : 2025-03-24 DOI:10.1002/lpor.202401804

Feng Liu, James Farmer, Grahame Faulkner, Jonathan J. D. McKendry, Enyuan Xie, Qianfang Zheng, Zhaoming Wang, Jianming Wang, Jordan Hill, Johannes Herrnsdorf, Martin D. Dawson, Dominic O'Brien

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Abstract

Low photon flux optical wireless communication (OWC) links are difficult to operate under normal daylight conditions as the interference from daylight will overwhelm any signal. However, in the UV-C region of the spectrum, light from the sun is highly attenuated, offering the possibility of link operation. In this paper, ultralow photon flux OWC links using a UV-C micro-LED and a silicon photomultiplier (SiPM) based UV-C single-photon detector (SPD) are reported. A 1 megabaud per second (MB s⁻¹) symbol rate 128-pulse-position modulation (128-PPM) link is demonstrated with 7.7 transmitted photons per bit, corresponding to 0.97 detected photon per bit. A maximum bit rate of 120 Mbit s⁻¹ is achieved in 8-PPM links with a transmitted power of 1.7 nW. In addition, a 500 MHz single-photon link is established with a bit error rate (BER) of $4.32 \times 10^{- 2}$ and a measured bit rate of 2.12 Mbit s⁻¹, showing the potential for a quantum key distribution (QKD) system operating at the UV-C region.

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使用UV-C单光子检测的超低光子通量OWC链路

低光子通量光无线通信（OWC）链路难以在正常日光条件下运行，因为日光的干扰会压倒任何信号。然而，在光谱的UV-C区域，来自太阳的光被高度衰减，提供了链接操作的可能性。本文报道了利用UV-C微型led和基于硅光电倍增管（SiPM）的UV-C单光子探测器（SPD）实现的超低光子通量OWC链路。1兆波特/秒（MB s−1）符号速率128-脉冲位置调制（128-PPM）链路，每比特传输7.7个光子，对应于每比特检测0.97个光子。在8ppm链路中，最大比特率为120mbps−1，传输功率为1.7 nW。此外，建立了500 MHz单光子链路，误码率（BER）为4.32×10−2$4.32 \times{{10}^{- 2}}$，测量比特率为2.12 Mbit s−1，显示了在UV-C区域运行量子密钥分发（QKD）系统的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Laser & Photonics Reviews 物理-光学

CiteScore

14.20

自引率

5.50%

发文量

314

审稿时长

2 months

期刊介绍： Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications. As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics. The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.