2.805 Gbit/s high-bandwidth phosphor white light visible light communication utilizing an InGaN/GaN semipolar blue micro-LED

Author:

Chang Yun-Han12ORCID,Huang Yu-Ming12,Liou Fang-Jyun12,Chow Chi-Wai12ORCID,Liu Yang3,Kuo Hao-Chung12,Yeh Chien-Hung4ORCID,Gunawan Wahyu Hendra12,Hung Tun-Yao12,Jian Yin-He12

Affiliation:

1. National Yang Ming Chiao Tung University

2. National Chiao Tung University

3. Philips Electronics Ltd., N.T.

4. Feng Chia University

Abstract

We propose and implement a high-bandwidth white-light visible light communication (VLC) system accomplishing data rate of 2.805 Gbit/s utilizing a semipolar blue micro-LED. The system uses an InGaN/GaN semipolar (20-21) blue micro-LED to excite yellow phosphor film for high-speed VLC. The packaged 30 μm 2 × 4 blue micro-LED array has an electrical-to-optical (EO) bandwidth of 1042.5 MHz and a peak wavelength of 447 nm. The EO bandwidth of the white-light VLC system is 849 MHz. Bit error rate (BER) of 2.709 × 10−3 meeting the pre-forward error correction (FEC) threshold is accomplished by employing a bit and power loaded orthogonal frequency division multiplexing (OFDM) signal. The proposed white-light VLC system employs simple and inexpensive yellow phosphor film for white-light conversion, complex color conversion material is not needed. Besides, no optical blue filter is employed in the white-light VLC system. The fabrication of the InGaN/GaN semipolar (20-21) blue micro-LED is discussed, and its characteristics are also evaluated.

Funder

Ministry of Science and Technology, Taiwan

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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