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Updated: Aug 26, 2025

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Small Molecule Based Organic Photo Signal Receiver for High-Speed Optical Wireless Communications.

Seonghyeon Cho¹, Chul-Joon Heo², Younhee Lim²

¹Dept. of Information and Telecommunication Engineering, Incheon National University, Incheon-si, 22012, Republic of Korea.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|October 3, 2022

Summary

This summary is machine-generated.

This study developed an organic photodiode (OPD) for faster optical wireless communication. A 150 Mbps data rate was achieved using machine learning, significantly advancing visible light communication (VLC) systems.

Keywords:

bulk heterojunctions laser diodes machine learning optical wireless communications organic photodiodes visible light communications

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Last Updated: Aug 26, 2025

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Area of Science:

Optoelectronics
Materials Science
Communications Engineering

Background:

Organic photodiodes (OPDs) are crucial for optical wireless communication (OWC).
Optimizing photoelectric conversion layers is key for high-speed performance.
Bulk heterojunction (BHJ) and planar heterojunction (PHJ) are common OPD architectures.

Purpose of the Study:

To develop a high-speed organic photodiode (OPD) receiver for optical wireless communication (OWC).
To compare the performance of bulk heterojunction (BHJ) and planar heterojunction (PHJ) photoelectric conversion layers for communication applications.
To demonstrate a high data rate using the developed OPD receiver with advanced signal processing techniques.

Main Methods:

Fabrication and characterization of BHJ and PHJ organic photodiode (OPD) devices.
Performance evaluation including -3 dB bandwidth measurements under varying bias conditions.
Implementation of pre-equalization and machine learning (ML)-based digital signal processing (DSP) for data transmission.
Demonstration of visible light communication (VLC) data rates.

Main Results:

The BHJ-OPD device exhibited a -3 dB bandwidth of 0.65 MHz (zero bias) and up to 1.4 MHz (-4 V bias).
A record 150 Mbps single-channel visible light communication (VLC) data rate was achieved using the OPD receiver.
The demonstrated data rate is approximately 40 times higher than previously reported for OPD-based VLC systems.
The OPD receiver showed significantly higher spectral efficiency compared to organic photovoltaic (OPV) receivers.

Conclusions:

The developed organic photodiode (OPD) receiver enables high-speed optical wireless communication.
The combination of OPDs with advanced digital signal processing (DSP) significantly enhances data rates in visible light communication (VLC).
This work sets a new benchmark for data transmission speeds in OPD-based VLC systems.