Résultats de la recherche - Dongdong Lin
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A Tunable Optical Delay Line Based on Cascaded Silicon Nitride Microrings for Ka-Band Beamforming
Publié 2019-01-01Accéder au texte intégralA continuously tunable optical delay line with low delay ripple based on four cascaded tunable silicon nitride microring resonators for Ka-band beamforming network is proposed. The delay responses of the tunable optical delay line were investigated theoretically and experimentally. And a maximum del...
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Implementation of a Highly-Sensitive and Wide-Range Frequency Measurement Using a Si<sub>3</sub>N<sub>4</sub> MDR-Based Optoelectronic Oscillator
Publié 2019-01-01Accéder au texte intégralMicrowave photonic technologies have been introduced for achieving broadband radio-frequency signal measurement. However, few of the proposed schemes mention the low-power radio-frequency signal detection, which stringently limits their practical applications in certain areas. In this paper, we desi...
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Amphiregulin impairs apoptosis-stimulating protein 2 of p53 overexpression–induced apoptosis in hepatoma cells
Publié 2017-03-01Accéder au texte intégralOverexpression of apoptosis-stimulating protein 2 of p53 (ASPP2) induces apoptotic cell death in hepatoma cells (e.g. HepG2 cells) by enhancing the transactivation activity of p53, but long-term ASPP2 overexpression fails to induce more apoptosis since activation of the epidermal growth factor/epide...
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A Seven Bit Silicon Optical True Time Delay Line for Ka-Band Phased Array Antenna
Publié 2019-01-01Accéder au texte intégralA seven-bit optical true time delay unit with a delay tuning increment of 1.42 ps was designed and fabricated on silicon photonics platform, which can be utilized in Ka-band phased array antenna systems. The delay unit consists of eight thermo-optical switches and seven waveguide delay li...
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Improving Performance of Silicon Thermo-Optic Switch by Combing Spiral Phase Shifter and Optimized Pulse Driving
Publié 2022-01-01Accéder au texte intégralFor the silicon photonics integrated circuits, the optical switch plays a vital role in many applications. Large scale integration requires low switching power and fast switching speed. However the switching time and switching power of silicon thermo-optic switch are typically limited to tens of mic...
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