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Microfluidic paper-based analytical devices can be used in preliminary screening and diagnosis of specific diseases. It has the advantages of low costs and quick diagnosis. After chemical reaction, the paper chip will display the disease's relative status through color identification or electrochemistry testing. When compared to electrochemistry testing, the non-contact color identification method...
High-quality Tl-2212 superconducting films were prepared on CeO2 coated r-cut sapphire substrates. An in situ two-temperature deposition process was introduced in the growth of CeO2 buffer layers. XPS measurements showed that the deposition process can sharply decrease the mutual diffusion at the interface. The critical temperature Tc of Tl-2212 film grown on the buffer layer was 108.2 K, the critical...
This paper purposes a global optimization method that could be applied in parameter estimation of wind generation unit model. When complex nonlinear models, like a wind generation unit model are used, the parameter estimation based on local optimization methods, such as nonlinear least squares method or Newton's method, may not be able to find parameter values with acceptable accuracy. The global...
A silicon Cu-photonics interposer, consisting of monolithically integrated Si modulators and Ge photodetectors, has been explored for integrated optical communication. Up to 33.7 GHz-bandwidth of this integrated circuit are enabled by travelling-wave electrode via Cu-BEOL.
We present silicon-based WDM photonics link for 240 Gb/s data transmission on 1.3 μm with above 50 GHz silicon modulator and 20GHz Germanium photo-detector. Photonics link has a bandwidth of 53.4GHz limited by the impedance mismatch.
CMOS-compatible silicon photonics technology is becoming a promising candidate to realize very large-scale complex photonics-CMOS integration system. For the purpose of CMOS-compatible complete-Cu integration, a traveling-wave electrode (TWE) of a silicon optical modulator via Cu-based back-end-of-line (BEOL) process is demonstrated in this work. A latticed Cu surface pattern is designed for the requirement...
This paper presents a global sparse grid optimization algorithm applied in parameter identification of a wind generation Root Mean Square (RMS) phasor model. The details of vendor specific RMS models used in dynamic simulation software (e.g. PSSE) are not provided by manufacturers. Therefore, there is a need to develop a procedure which can convert vendor specific models to standardized generic models...
High-performance silicon optical modulator is demonstrated with up to 50-Gb/s data rate upon 1.3-Vpp. The measured extinction ratios of the optical eye-diagrams are respectively 5.97-dB, 5.13-dB and 4.44-dB at 28-Gb/s, 40-Gb/s and 50-Gb/s data rate.
In the proposed method, the requirements of different customer connected to the distribution system are determined and measured by customer satisfaction degree, where, the direct and indirect economic losses caused by the power quality disturbances occurring in the distribution system can be determined by the customer satisfaction degree. By the help of customer losses, a high supply quality system...
We demonstrate the first silicon-based parallel-fed travelling-wave photodetector array (TWPDA). Impedance-matched travelling-wave electrode is designed considering periodic loading effect. The demonstrated up to 4-channel TWPDAs show >10GHz 3-dB bandwidths and ∼0.75A/W responsivity using 30µm-length PDs.
Silicon photonics platform in a commercial 0.18 µm CMOS foundry line is described. Low-loss Si passives and high speed germanium photodetectors (>20GHz) with low dark current (∼11nA) and high responsivity (1.06A/W) at 1550nm are presented.
A mode converter is fabricated with SiON to reduce the coupling loss between SiN waveguide and cleaved single-mode-fiber. The coupling loss is 1.2dB/facet and 1.4dB/facet for TE and TM mode, respectively, with 3dB alignment tolerance of ±3.5µm.
We demonstrate a cost-effective silicon microring-based bio/chemical sensor, which integrates vertical grating couplers, two cascaded microrings for optical sensing and electrical tracing, and Ge photodetector for direct sensing interrogation. Detection limit of 1.5×10-5 is demonstrated.
A carrier-induced silicon-waveguide Bragg-grating filter with a pin junction is demonstrated. The bandwidth and the extinction ratio of the filter are 0.3nm and 14dB, respectively. It can be tuned by both forward and reverse biases.
In this paper, a high efficient fiber-to-waveguide mode converter is demonstrated on the SOI platform, which is composed of a suspended tapered SiO2 waveguide and overlapped Si nano-tapers. The overlapped Si nano-tapers are located in the center of suspended tapered SiO2 waveguide. With a refractive index (<1.4) matching liquid, the coupling losses between the cleaved optical fiber and this...
We demonstrate a multiple-channel optical receiver integrating multiple thermally tunable microring resonator as the WDM demultiplexing and Ge photodetector for light detection. We fabricated 4-channel and 10-channel of such WDM receivers using CMOS-compatible fabrication process. We show that with the thermal tunability, the channel wavelengths can be adjusted to align with the selected channel grid...
The problem of robust H¡Þ fault-tolerant control for uncertain suspension system with time delay was investigated. Based on state feedback and Lyapunov stability theory, a sufficient condition of the existence of robust H¡Þ fault-tolerant controller was derived and then transformed to the corresponding linear matrix inequality. During inferential reasoning, the less conservative arithmetic dealing...
Take an experimental middle school of rural-distance education projects in the west area of China as an example, The paper constructs and implements a rural-distance education model based on Moodle. Although the study found that the model does not significantly improve the achievement of students, it can reduce the gap anong the students and improve students' interest in learning, and it can also...
We demonstrate a 4-channel 2×2 colorless WSS with channel spacing of 20nm, the total transmission loss of ∼10dB, power consumption of ∼2.5mW, and switching time of ∼006μs. High-throughput data transmission of 80Gb/s is demonstrated.
The paper discusses the design of protection circuits responsible for the reliability of arc welding power supply. The protection circuits include three parts, and they are soft-start circuit for anti-surge, circuit for eliminating transformer DC bias magnetic field and circuit for transient over-voltage suppression, respectively. The detail calculations about component parameters of these circuits...
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