In recent years the PON research community has focused on future systems targeting 100 Gb/s/ $\lambda$ and beyond, with digital signal processing seen as a key enabling technology. Spectrally efficient 4-level pulse amplitude modulation...

the birth of Neuroengineering, a new research field recently introduced by the synergic overlap between neuroscience and electronic engineering disciplines, injected a great enthusiasm in researchers. In fact, it opened a new perspective for addressing complex problems such as the understanding of the brain functions and the development of novel and advanced brain-computers. In this article, we...

For the last 18 months the author has been involved with Pixel Technologies in developing and producing the high-gain low-noise preamp used with the company’s series of shielded magnetic loop antennas. Recently Pixel asked me to perform a series of comparative tests on the latest version of their loop antenna (Model RF PRO-1B) to determine how it performs relative to other loop antennas and oth...

Materials and methods A movable circle surface coils with a low input impedance preamplifier were made to connect the receive system of a 1.5T MRI scanner (Symphony, Siemens). The coil was moved together with the HIFU transducer during the HIFU ablation. The dynamic temperature images during HIFU ablation of porcine meat and living mini-pig leg were measured by this home-made coil. MR temperatu...

We demonstrate a sensitive method of charge detection based on radio-frequency readout of the Josephson inductance of a superconducting single-electron transistor. Charge sensitivity 1.4 x 10(-4) e/square root Hz, limited by a preamplifier, is achieved in an operation mode which takes advantage of the nonlinearity of the Josephson potential. Owing to reactive readout, our setup has more than 2 ...

AbstructIntermodulation and harmonic distortion are calculated for a simple fiber-optic link with a representative set of link parameters and a variety of electrooptic modulators: simple Mach-Zehnder, linearized dual and triple Mach-Zehnder, simple directional coupler (two operating points), and linearized directional coupler with one and two dc electrodes. The resulting dynamic ranges, gains, ...

Intensive use of laser guide stars with the new generation of extremely large telescopes and hypertelescopes will require the use of more efficient lasers to surmount novel limitations and aberrations. The pulsed frequency-shifted feedback (FSF) laser we have developed overcomes the saturation of sodium atoms and solves the new problems. This work presents a highly efficient solution for operat...

The results of electrical characterisation and X-ray detection measurements of two different active area (0.06 mm and 0.5 mm) commercial 4H-SiC Schottky photodiodes at room temperature are reported. The devices exhibited low dark currents (less than 10 pA) even at a high electric field strengths (403 kV/ cm for 0.06 mm diodes; 227 kV/cm for 0.5 mm diodes). The results of the X-ray measurements ...

The acoustic emission (AE) signal of wood damage is a kind of weak and highfrequency signal. Hardware circuit design and software programming are necessary for the acoustic emission data acquisition. In order to carry out further analysis, it needs to be preprocessed. The preprocessing hardware system consists of preamplifier, filtering circuit, main amplification circuit and AD converting circ...