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We experimentally demonstrate hybrid orbital angular momentum (OAM) Mode and Gaussian mode encoding/decoding for 10-Gbit/s data transmission through a 2.6-km conventional graded-index multimode Fiber (OM3), and achieve bit-error rate (BER) below 3.8e-3.
We experimentally demonstrate 20 Gbit/s data transmission over a 1.1 km elliptical-core few-mode fiber (EC-FMF) link assisted by mapping from conventional amplitude modulation to spatial mode modulation, and achieve a 0.7 dB OSNR penalty improvement than single mode transmission at a BER of 3.8e-3.
We propose and fabricate high-performance subwavelength grating (SWG) slot waveguides on an SOI platform for the short-wave infrared (SWIR). We further demonstrate 5-Gbit/s direct modulation data transmission in the emerging 2 μm communications waveband.
Silicon strip and slot waveguides are fabricated and 5 Gb/s directly-modulated data transmission is demonstrated in 2 μm waveband. The results indicate the suitability of SOI platform for chip-scale data transmission in the mid-infrared wavelength.
Carcinoembryonic antigen (CEA) is a glycosylphosphatidylinositol cell surface anchored glycoprotein that is a well-known, broad spectrum biomarker related to various cancers and it is also an indicator of disease recurrence. In this work, metal-enhanced fluorescence (MEF) is utilized to lower the detection limit of CEA in immunofluorescence assays. Silver nanocubes (AgNCs) of 50 nm edge-length were...
The sensing characteristic of fiber optical current transformer(FOCT) is affected by linear birefringence. In this paper, evolution process of optical polarization is derived and linear birefringence's influence on sensing characteristic of FOCT is analyzed in essence. Phase difference of light field components during transmission process is resulted by wave vector's inequality in non-propagating...
On-load tap changer (OLTC) is essential in regulating the operation status of power transformers employed in modern power systems. While exploring power flow analysis, electromagnetic and electromechanical simulations by using the on-load tap changer, it is found that inaccuracy problem may occur with the assumption in conventional transformers that tap positions only affect the turns ratio parameter;...
A five-stage 93.9 GHz-105.6 GHz common-source CMOS amplifier is presented in this paper. The customized on-chip inductor and transmission line (TL) are designed for matching networks. Fabricated in a 65nm bulk CMOS process, this amplifier achieves a peak gain of 9 dB at 100 GHz and 11.7GHz 3-dB bandwidth range from 93.9 GHz to 105.6 GHz, consuming total power of 49.2 mW under 1.2 V voltage supply...
Resonant wireless power transmission has the advantages of long transmission distance and high efficiency. Series — series (SS) transmitting and receiving system is suitable for small load research. In this paper SS-type circuit is analyzed and discussed by using equivalent circuit theory. The mathematical models of the transmission efficiency and output power are derived. The influencing factors,...
A novel vibrating ring gyroscope is proposed in this paper, and the structure employs axisymmetric ring resonator and capacitance transducers. Motion characteristics of the ring resonator and the setting of the capacitance electrodes are discussed in detail. The simulation results demonstrate that the natural resonant frequency of the operating mode of the gyroscope is 8.805 kHz and 8.807 kHz, and...
This paper studies the non-fragile H∞ control for switched linear systems with an event-triggering strategy. With the proposed strategy, the system state is only sampled and updated when the defined error exceeds a given threshold. More in detail, first, based on multi-Lyapunov function method and average dwell time technique, sufficient conditions for the H∞ control performance are given, and subsequently...
The finite-time stabilization for a class of stochastic nonlinear systems with Markovian switching and uncertain transition probabilities is studied in this paper. Different from existing results for stochastic systems with Markovian switching which are all about strong solutions, the results in this paper are about weak solutions. Firstly, we develop Lyapunov theorems for the existence of a global...
The transmission characteristics of a two-dimensional coaxial Bragg structure have been investigated in this paper. The dielectric layer between the outer and the inner conductors of the coaxial waveguide in the structure is helically corrugated and the grooves are loaded with a metallic strip. It is found that, a dominant transmission bandgap can be obtained from the mode conversion induced by the...
A fully synthesizable analog-like loop filter for a Low-Dropout regulator using only digital standard cells is proposed. To accommodate this, various blocks such as comparator, time-to-digital converter and charge-pumps are developed using only standard cells. The fabricated prototype in 0.13μm process occupying 0.0875mm2 provides 15mA current with minimum quiescent current of 140μA and load transient...
Nonlinear ultrasonic measurements has been proposed to characterize the creep damage evolution of P92 martensitic ferritic steels at a temperature of 650 °C and stresses of 100 MPa and 115 MPa, respectively. The correlation of increase-decrease-increase between the ultrasonic nonlinearity and the creep strain was achieved for both sets of specimens. Considering the metallographic studies, nonlinear...
P92 martensitic ferritic steels are an attractive material for critical components in power industries due to the excellent creep property. However, these steels are usually susceptible to creep strength degradation during a long service period under the elevated temperature and pressure. Creep damage evaluation is of concern to quantitatively assess the remaining lifespan of the critical components...
Because of excellent electrical properties, epoxy resin is widely used in packaging and casting power equipment. Moisture and temperature in the environment are inclined to seriously affect the insulation tolerance of epoxy resin. This work focuses on the aging characteristics of epoxy resin in hygrothermal environment. The effect of hygrothermal aging on the properties of epoxy resin was deeply studied...
A lid is widely used in integrated circuit and package to provide the die protection, heat spreading and warpage control. High-speed signals from a die and traces can be coupled to the lid causing radiated emissions, which usually result in Electromagnetic Interference (EMI) problems. One method to mitigate the emissions is to connect the lid to the package ground by using electrically conductive...
0.35mm fine pitch wafer level chip scale package (WLCSP) has been developed by NCAP for portable electronic applications. It can provide 196 pin counts in 5mm × 5mm package body size. This paper reports the development work of WLCSP and the package level and board level reliability study including thermal cycling and drop test. The technology is evaluated using a 5mm × 5mm test vehicle with 0.35mm...
Due to the demands of the market, high density and low profile packaging options of small packaging are continuously developed. As high density packaging technologies such as Molded Underfill (MUF) on flip chip package are usually used due to its simplification of assembly process steps and the saving of the cost. For MUF process, in order to ensure void free package, it is often constructed a vacuum...
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