| 1 | 1.3 GHz E-O bandwidth GaN-based micro-LED for multi-gigabit visible light communication显示文摘The data rate of a visible light communication(VLC) system is basically determined by the electrical-to-optical(E-O) bandwidth of its light-emitting diode(LED) source. In order to break through the intrinsic limitation of the carrier recombination rate on E-O bandwidth in conventional c-plane LEDs based on In Ga N quantum wells,a blue micro-LED with an active region of nano-structured In Ga N wetting layer is designed, fabricated, and packaged to realize a high-speed VLC system. The E-O bandwidth of the micro-LED can reach up to 1.3 GHz. Based on this high-speed micro-LED, we demonstrated a data rate of 2 Gbps with a bit error rate(BER) of 1.2×10^(-3) with simple on-off keying signal for a 3-m real-time VLC. In addition, a 4-Gbps VLC system using quadrature phase shift keying-orthogonal frequency-division multiplexing with a BER of 3.2×10^(-3) is also achieved for the same scenario. Among all the point-to-point VLC systems based on a single-pixel LED,this work has the highest distance-bandwidth product of 3 GHz·m and the highest distance-rate product of 12 Gbps·m. | LEI WANG ZIXIAN WEI CHIEN-JU CHEN LAI WANG H.Y.FU LI ZHANG KAI-CHIA CHEN MENG-CHYI WU YUHAN DONG ZHIBIAO HAO YI LUO | 2021 | Photonics Research2021，9，5： | 4 |
| 2 | Epsilon-near-zero photonics:infinite potentials显示文摘With its unique and exclusive linear and nonlinear optical characteristics,epsilon-near-zero(ENZ)photonics has drawn a tremendous amount of attention in the recent decade in the fields of nanophotonics,nonlinear optics,plasmonics,light-matter interactions,material science,applied optical science,etc.The extraordinary optical properties,relatively high tuning flexibility,and CMOS compatibility of ENZ materials make them popular and competitive candidates for nanophotonic devices and on-chip integration in all-optical and electro-optical platforms.With exclusive features and high performance,ENZ photonics can play a big role in optical communications and optical data processing.In this review,we give a focused discussion on recent advances of the theoretical and experimental studies on ENZ photonics,especially in the regime of nonlinear ENZ nanophotonics and its applications.First,we overview the basics of the ENZ concepts,mechanisms,and nonlinear ENZ nanophotonics.Then the new advancements in theoretical and experimental optical physics are reviewed.For nanophotonic applications,the recent decades saw rapid developments in various kinds of different ENZ-based devices and systems,which are discussed and analyzed in detail.Finally,we give our perspectives on where future endeavors can be made. | JIAYE WU ZE TAO XIE YANHUA SHA H.Y.FU QIAN LI | 2021 | Photonics Research2021，9，8： | 4 |
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