Digitally Controlled Micro-LED Array for Linear Visible Light Communication Systems

Qian, Hua; Zhao, Shuang; Cai, Shuzhen; Zhou, Ting

doi:10.1109/jphot.2015.2424398

Cited by 23 publications

(11 citation statements)

References 16 publications

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“…Arrays of such LEDs can be used for transmission of different data from each LED, as described later in this paper, or aggregated to provide increased source power. As examples, in [50,51] arrays of LEDs are used to create sources that convert digital signals directly into light levels. Resonant cavity LEDs incorporate a lower finesse cavity than a laser structure in order to enhance efficiency and modulation bandwidth, and high data rates have been demonstrated with these devices [52].…”

Section: (B) Led Transmittersmentioning

confidence: 99%

Transmitter and receiver technologies for optical wireless

O’Brien

Rajbhandari

Chun

2020

Phil. Trans. R. Soc. A.

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Providing a reliable link, with sufficient signal-to-noise ratio (SNR) and bandwidth to deliver high-capacity communications is a critical challenge for optical wireless (OW) communications and understanding and jointly optimizing the performance of the transmitter and receiver subsystems is a key part of this. At the transmitter a source of light, either a laser or a light-emitting diode, must be modulated with the communications signal. The resulting emission must be directed, using optics or steering systems, as required for the particular application, and must be within any safety levels set by relevant standards. The receiver is the most critical part of any optical link, as its design is a dominant factor in determining the received SNR, which determines the capacity and ultimately the utility of the link. A receiver must collect, filter and concentrate signal radiation, then detect and amplify the resulting electrical signal. This review surveys the state-of–the-art transmitter and receiver technologies. Details of design constraints are discussed, and potential future directions discussed. This article is part of the theme issue ‘Optical wireless communication’.

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Section: (B) Led Transmittersmentioning

confidence: 99%

Transmitter and receiver technologies for optical wireless

O’Brien

Rajbhandari

Chun

2020

Phil. Trans. R. Soc. A.

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“…However, micro‐LED can save more energy with higher light output power. Moreover, the high response frequency and bandwidth not only make micro‐LED a great display device but also bring it a bright future of visible light communication/interconnection, as well as indoor/outdoor localization …”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the high response frequency and bandwidth not only make micro-LED a great display device but also bring it a bright future of visible light communication/interconnection, as well as indoor/outdoor localization. [14][15][16][17] Micro-LED technologies have been developed more than 10 years. In 2001, Prof H. X. Jiang's team reported a passive matrix (PM) blue micro-LED array with pixel size of 12 μm and resolution of 10 × 10.…”

Section: Introductionmentioning

confidence: 99%

Fully-integrated active matrix programmable UV and blue micro-LED display system-on-panel (SoP)

Zhang

Peng

Lau

et al. 2017

Jnl Soc Info Display

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High pixel per inch and high‐resolution micro‐LED displays are attracting more and more attentions. The increasing pixel number requires a large amount of bonding pads and brings huge difficulties to micro‐LED system design and lowers power efficiency as well. It is urgent to integrate row and column driving circuits onto the micro‐LED panel. Here, we report a fully integrated active matrix programmable micro‐LED system on panel (SoP) with ultraviolet and blue emission wavelengths. The micro‐LED SoP has a resolution of 60 × 60 and pixel pitch of 70 μm. The micro‐LED SoP was achieved by integrating micro‐LED arrays with silicon‐based p‐channel metal‐oxide semiconductor driving panel using fine‐toned flip‐chip bonding technology. With fully integrated scan and data circuits, the number of bonding pads was greatly reduced from 136 to 28, and large amount of metal interconnection lines were saved. The micro‐LED SoP panel was mounted on a periphery driving board, and representative characters were displayed successfully.

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“…Published driver architectures [8], [9] utilise discrete components to realise such communication links, whereas [11] realises an integrated complimentary metal oxide semiconductor (CMOS) Gallium Nitride (GaN) DLC system. Effects of µLED mismatch in such a system was studied in [10]. Symbol rates up to 100 MS/s have been achieved in [11] using 4-PAM and a voltage mode drive scheme.…”

Section: Introductionmentioning

confidence: 99%

High-Speed Integrated Digital to Light Converter for Short Range Visible Light Communication

Jalajakumari

Xie

McKendry

et al. 2017

IEEE Photon. Technol. Lett.

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Design details and characterisation results of an integrated digital to light converter (DLC) for short range visible light communication (VLC) is reported. The integrated DLC can generate 16 light intensity levels at fast switching speeds, up to 500 MHz, thus enabling fast intensity modulated VLC. Data rates up to 365 Mb/s are achieved with bit error rate (BER) 1 ⇥ 10 3 at a link distance of 5 cm and average electrical power efficiency of 70%. Optimisation in the micro light emitting diode (µLED) manufacturing process has resulted in approximately three fold increase in data rate of the system. Spectrally efficient modulation schemes like orthogonal frequency division multiplexing (OFDM) and pulse amplitude modulation (PAM) are also demonstrated using this integrated system.

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Digitally Controlled Micro-LED Array for Linear Visible Light Communication Systems

Cited by 23 publications

References 16 publications

Transmitter and receiver technologies for optical wireless

Transmitter and receiver technologies for optical wireless

Fully-integrated active matrix programmable UV and blue micro-LED display system-on-panel (SoP)

High-Speed Integrated Digital to Light Converter for Short Range Visible Light Communication

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