Studies on multiplication effect of noises of PPDs, and a proposal of a new structure to improve the performance
نویسندگان
چکیده
Pixelated Photon Detectors (PPDs) are the most promising semiconductor photodetectors in recent years. One of the issues with the PPD is its high noise rate. As well as random noise, PPD also exhibits so called after-pulsing and optical crosstalk, and these limit the applicable range of its gain as well as its size. By accurately measuring each of these causes of noises independently, we quantitatively evaluated how the performance of the present device is limited by multiplication effect of these noises. With this result and the pulsing mechanism of PPD, we propose a new structure of PPD which could have high gain with low noise.
منابع مشابه
A New Parallel Matrix Multiplication Method Adapted on Fibonacci Hypercube Structure
The objective of this study was to develop a new optimal parallel algorithm for matrix multiplication which could run on a Fibonacci Hypercube structure. Most of the popular algorithms for parallel matrix multiplication can not run on Fibonacci Hypercube structure, therefore giving a method that can be run on all structures especially Fibonacci Hypercube structure is necessary for parallel matr...
متن کاملضربکننده و ضربجمعکننده پیمانه 2n+1 برای پردازنده سیگنال دیجیتال
Nowadays, digital signal processors (DSPs) are appropriate choices for real-time image and video processing in embedded multimedia applications not only due to their superior signal processing performance, but also of the high levels of integration and very low-power consumption. Filtering which consists of multiple addition and multiplication operations, is one of the most fundamental operatio...
متن کاملStudy of Noise Loudness and Sharpness Effects on Cognitive Performance on Male Students of Tehran University of Medical Sciences
Introduction: The noise could affect some aspects of human health, including the cognitive performance. In addition to sound pressure level and exposure time, the psychoacoustic features of noise may cause destructive effects on humans. A few recent studies have been conducted on effect of sound quality on cognitive performance. This study aims to find the noise loudness and sharpness levels as...
متن کاملA New Two-Stage Method for Damage Identification in Linear-Shaped Structures Via Grey System Theory and Optimization Algorithm
The main objective of this paper is concentrated on presenting a new two-stage method for damage localization and quantification in the linear-shaped structures. A linear-shaped structure is defined as a structure in which all elements are arranged only on a straight line. At the first stage, by employing Grey System Theory (GST) and diagonal members of the Generalized Flexibility Matrix (GFM),...
متن کاملDevice and Circuit Performance Simulation of a New Nano- Scaled Side Contacted Field Effect Diode Structure
A new side-contacted field effect diode (S-FED) structure has beenintroduced as a modified S-FED, which is composed of a diode and planar double gateMOSFET. In this paper, drain current of modified and conventional S-FEDs wereinvestigated in on-state and off-state. For the conventional S-FED, the potential barrierheight between the source and the channel is observed to b...
متن کامل