Session Index

Progress in understanding resonant subwavelength optical structures has fueled a worldwide explosion of interest in both fundamental processes and nanophotonic/plasmonic devices for imaging, sensing, solar energy conversion, and information processing. However, plasmonic platforms in the visible region with robust, high performance, thermo-stable, and low-cost remains remain unexplored. In this presentation, I will particularly discuss emerging plasmonic platforms based on transition metal nitrides. I will present an overview of my research works over the past five years on the plasmon-enhanced light-matter interactions in the visible regions and its applications [1-6], including the plasmonic nanolasers [1-2], tunable plasmonic modulators [3], plasmonic phototransistors [4], plasmon-enhanced solar energy harvesting [5], and the refractory plasmonic colors for back-light free displays [6]. My group discovered several unique working mechanisms that utilize plasmonic nanostructures to improve optoelectronic device performance. By engineering the local electromagnetic field confinement, the light-matter interaction strength can be enhanced, which results in efficient energy conversion in the designed nanosystem. The detailed mechanisms and possible applications will be discussed. These results have broad implications for the use of plasmonic crystals/metasurfaces in high-performance optoelectronic devices with efficient energy conversion.


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In recent years, high-speed data transmission has become an important issue for the needs of high-resolution image/audio, data streaming, and data cloud storage/computing. At the transmitted end, the VCSEL has been developed to enhance transmission capacity because of its great performance. With some tradeoffs, the few-mode (FM) VCSEL has emerged as a suitable solution for increasing transmission capacity and distance. In addition, after performing waveform pre-emphasis processing, the allowable NRZ-OOK data rate is increased to 69 Gbit/s. And for 69 Gbit/s NRZ-OOK transmission, the received BER of less than 2.6 × 10−5 is still lower than the forward-error correction criterion.

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In this manuscript, A 1270nm uncooled directly-modulated, InGaAlAs multiple quantum wells (MQWs) high speed DFB laser was demonstrated. A small signal frequency response bandwidth 20GHz was achieved at 45 °C. Furthermore, we realized 25Gb/s non-return-to-zero transmission with a clear eye-opening feature at room temperature (25 °C).

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We report the use of cascaded multi-plate supercontinuum that generate 12 fs, 515nm pulse with pulse energy 120 uJ and achieve pulse broadening for 6 fs transform limited.

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We report on the first observation of bound solitons in Cr-Er co-doped passively mode-locked fiber laser. The employed gain fiber is a Cr-Er co-doped mode-locked fiber, which enables broader emission spectrum than commercial Er-doped fibers and owns unique optical parameters allowing us to obtain the bound soliton operation easily. Both conventional and bound solitons can be generated in the same passively mode-locked fiber laser, and the operation states can be easily switched through the adjustment of pulse polarization.

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The pulse duration of the de-chirped pulses of around 1 m regime has been measured by the fringe-resolved autocorrelation (FRAC) through the nonlinear absorption of the ZnSe plate. Here, the de-chirped pulse was produced from the pulse amplifier of dissipative soliton from all normal dispersion passively mode-locked Yb-doped fiber laser (ANDi PML-YDFL) and compression by the grating pair. Through the measurement of de-chirped pulse around 1047nm, we demonstrated that the emission intensity of ZnSe reveals a quadratic increase with the pump intensity, which demonstrated the domination of the two-photon absorption (TPA).

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