Nanoscale PZT gratings are successfully transferred to a Pt substrate using reversal nanoimprint technique without any chemical etch processes. The transfer process is preliminarily studied by measuring the surface to...
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In order to meet the requirements of different filtering specifications in a reconfigurabie platform that supports multi-standard coexistence and high data rates, a general-purpose filter is indispensable. This pa...
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In order to meet the requirements of different filtering specifications in a reconfigurabie platform that supports multi-standard coexistence and high data rates, a general-purpose filter is indispensable. This paper presents a new architecture of a general filter composed of a lattice wave digital filter (LWDF) that has low sensitivity and excellent stability properties. Possessing advantages of small area and low latency, this general IIR filter can also achieve approximately linear phase.
In this work, we demonstrate the fabrication of silicon nanowires, with their widths ranging from 22 nm to 110 nm, using the combination of bilayer nanoimprint and angle deposition. The approach makes the widths of th...
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A l.0GHz, Voltage Controlled Oscillator (VCO) fabricated in TSMC 1.2V 1P9M 65nm CMOS LP-Process is presented in the paper. The output frequency is proportional to the control voltage (Vctrl). The advantage of the ...
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A l.0GHz, Voltage Controlled Oscillator (VCO) fabricated in TSMC 1.2V 1P9M 65nm CMOS LP-Process is presented in the paper. The output frequency is proportional to the control voltage (Vctrl). The advantage of the architecture is very simple and easy to be realized and it aims at low power, low area and low cost. Measured results show that the VCO operates at 400 MHz to 1.6 GHz while Vctrl ranges from 0.8V to 1.4V and the tuning range is even larger than 100％. The VCO works well in Register File and consumes 0.5 mA from a 1.2-V power supply, and occupies an area of 400 μm2.
A novel 40-Gb/s constant envelope optical frequency shift keying （FSK） transmitter and the transmission characteristics are investigated both by simulation and experiment. Meanwhile, to increase the spectrum efficie...
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A novel 40-Gb/s constant envelope optical frequency shift keying （FSK） transmitter and the transmission characteristics are investigated both by simulation and experiment. Meanwhile, to increase the spectrum efficiency of FSK, we propose a novel optical minimum-shift keying （MSK） scheme and analyze its per-formance compared with other MSK schemes and other traditional modulation formats. Simulation and experimental results show that the novel FSK scheme could be a potential candidate for the future high speed transmission and label switching systems. And the novel MSK scheme deserves future deep research for its potential excellent performance.
In this paper, genetic algorithm (GA) using parallel tabular technique is presented for the optimization of mixed polarity Reed Muller and mixed polarity dual Reed Muller functions. The algorithm is to find optimal so...
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In this paper, genetic algorithm (GA) using parallel tabular technique is presented for the optimization of mixed polarity Reed Muller and mixed polarity dual Reed Muller functions. The algorithm is to find optimal solution among 3" different solutions for large functions. To overcome the disadvantage of the traditional tabular technique, the cost function of GA is based on parallel tabular technique, in which new terms are generated at one time instead of generating in sequence. Without generating all the polarities, the proposed algorithm is efficient in terms of CPU time and achieves 8％ improvement in average.
A novel scheme to generate, transmit, and receive an optical orthogonal frequency division multiplexing （OFDM） continuous phase modulation （CPM） signal, which is combining minimum shift keying （MSK） coding with ...
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A novel scheme to generate, transmit, and receive an optical orthogonal frequency division multiplexing （OFDM） continuous phase modulation （CPM） signal, which is combining minimum shift keying （MSK） coding with OFDM optical modulation, for downlink application in a 4×2.5-Gb/s wavelength division multiplexing （WDM） passive optical access network, is proposed and experimentally validated. We also realize wavelength remodulation for carrying upstream on-off keying （OOK） data to reduce the cost budget at the optical network unit. The experimental results show that the power penalties for the downlink and the uplink data after transmission over 25-km SMF-28 fiber are 0.1 dB and smaller than 0.4 dB, respectively.
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