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Maximally flat digital differentiators are widely used as narrow-band digital differentiators because of their high accuracy around their center frequency of flat property. To obtain highly accurate differentiation over narrow-band, it is important to avoid the undesirable amplification of noise. In this paper, we introduce a design method of linear phase FIR band-pass differentiators with flat passband...
The surface band bending was investigated by angle-resolved XPS measurements in both metal-polar and N-polar GaN and InN films grown by RF-MBE. Clear difference on the bending direction was observed between GaN and InN films.
New multi-channel waveguides having hybrid comb-clad are proposed for optical interconnect. A large delta-n between the core and clad has potential as small bending radius. A prototype shows a 90-deg bending loss of 1.1 dB.
Transconductance (gm) enhancement in n-type and p-type nanowire field-effect-transistors (nwFETs) is demonstrated by introducing controlled tensile strain into channel regions by pattern dependant oxidation (PADOX). Values of gm are enhanced relative to control devices by a factor of 1.5 in p-nwFETs and 3.0 in n-nwFETs. Strain distributions calculated by a three-dimensional molecular dynamics simulation...
This manuscript reports the measurement results of narrowband signal propagation of PLC channels. In Japan, in-house wiring is single-phase three-wire, and each branch between an outlet of 100 V and the panel board is connected to one of two live conductors and the neutral. Thus a pair of outlets can be classified into three types: connected to different live conductors, connected to the same live...
We have developed a high-efficiency source of cross-polarized photon pairs in a 800-nm band via type-II quasi-phase matched spontaneous parametric down-conversion using periodically poled lithium niobate. We obtained 25,000 coincidence counts sec-1 mW-1 of the photon pairs.
We have developed a high-efficiency source of cross-polarized photon pairs via type-II quasi-phase matched spontaneous parametric down-conversion using periodically poled lithium niobate (PPLN). The photon pairs are generated from the PPLN in fifth-order quasi-phase matched condition around 800 nm, which matches the wavelength band of efficient Si avalanche photodiodes. We obtained 25,000 coincidence...
C/sub 60/ / amorphous carbon (a-C) superlattice structures are fabricated by shutter controlled high-vacuum evaporator. From the UV-Visible reflectance/ transmittance measurements, the energy shift of absorption edge is observed in the superlattice structures corresponding with their thickness of C/sub 60/ and a-C layers. The photoconductivity is measured using solar simulating light (AM 1.5) of 100...
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