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首页> 外文期刊>Nonlinear Optics, Quantum Optics >Highly Directional Emission from a Broadband Organic Light-Emitting Diode using a Substrate Diffractive Optical Element for Visible Light Communications
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Highly Directional Emission from a Broadband Organic Light-Emitting Diode using a Substrate Diffractive Optical Element for Visible Light Communications

机译：宽带有机发光二极管的高方向性发射，使用衬底衍射光学元件进行可见光通信

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摘要

An important challenge for organic light-emitting diodes (OLEDs) is to control their emission pattern. Here a SuperYellow OLED was fabricated and the spatial distribution of the emission from the OLED was strongly shaped into a directional beam by using a butt-coupled diffractive optical element and a green band-pass filter. The out-coupled beam peaked at 535 nm with a full- width-half-maximum (FWHM) of ~20 nm and the overall FWHM divergence of the beam integrated from 500 nm to 570 nm was 10~0 for s-polarisation and 14~0 for p-polarisation, which shows a strong directionality, compared with the normally Lambertian emission of an OLED. Such directional emission can be used to enhance data-rates of visible light communications by using parallel data transmission and decreasing cross talk.
机译：有机发光二极管（OLED）的一个重要挑战是控制其发射模式。在这里，制造了超级黄色OLED，并通过使用对接耦合的衍射光学元件和绿色带通滤光片，将OLED发射的空间分布强烈地塑造为定向光束。出射光束在535 nm处达到峰值，半峰全宽（FWHM）为〜20 nm，并且从s偏振积分到500 nm至570 nm的光束的整体FWHM发散为10〜0，而14与OLED的正常朗伯发射相比，p极化的〜0表现出很强的方向性。通过使用并行数据传输和减少串扰，此类定向发射可用于增强可见光通信的数据速率。

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