A High-Speed Fully-Integrated VLC Receiver With Large-Area Photodetector

A High-Speed Fully-Integrated VLC Receiver With Large-Area Photodetector

This paper presents a fully integrated visible light communication (VLC) receiver with a large photo-sensitive area optimized for high-speed data transmission. The photodetector (PD) featuring a size of 410 &#x03BC;m &#x00D7; 410 &#x03BC;m is implemented using a P<inline-formula>&l...

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Bibliographic Details
Main Authors: Sheng Xie, Xiaoxia Hu, Jia Cong
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Photonics Journal
Subjects:
Visible light communication
optical receivers
photodetectors
CMOS analog integrated circuits
Online Access:https://ieeexplore.ieee.org/document/10955680/
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Summary:This paper presents a fully integrated visible light communication (VLC) receiver with a large photo-sensitive area optimized for high-speed data transmission. The photodetector (PD) featuring a size of 410 &#x03BC;m &#x00D7; 410 &#x03BC;m is implemented using a P<inline-formula><tex-math notation="LaTeX">$^{+}$</tex-math></inline-formula>/N-well/P-sub structure and was segmented into multiple P<inline-formula><tex-math notation="LaTeX">$^{+}$</tex-math></inline-formula>/N-well detection cells to enhance the response speed while maintaining high sensitivity. To further extend the overall bandwidth of optical receiver, a continuous-time linear equalizer (CTLE) with negative capacitance technique is incorporated, effectively compensating for the high-frequency gain loss. The proposed VLC receiver was fabricated in CSMC 0.25 &#x03BC;m CMOS technology, and its performance is verified in a VLC test system. The experimental results indicate that this receiver can achieve a data rate of 980 Mbit/s at a bit error rate (BER) of 3.8 &#x00D7; 10<inline-formula><tex-math notation="LaTeX">$^{-3}$</tex-math></inline-formula>.
ISSN:1943-0655

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