Fundamentals of Passive Optical Network Components & its Variants


Passive Optical Network
Passive optical elements (splitter, coupler, ) based optical distribution network
Special form of FTTC or FTTH
Physical star, but logical bus
Cost effective technology for distribution services
No powering of remote electronics
Eliminates need for conditioned enclosures
Transparent to signal formats
Simplifies future upgrades

Passive Optical Network
Op ....etc

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In passive solar building design, windows, walls, and floors are made to collect, store, and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.

The key to design a passive solar building is to best take advantage of the local climate performing an accurate site analysis. Elements to be considered include window placement and size, and glazing type, the ....etc

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INTRODUCTION

Miniaturization has been a key contributor to advances in electronic technology. Certainly, miniaturization has been made possible mostly through remarkable breakthroughs in reducing the size of active components. But as integrated circuits get smaller and more complex, there is an increasing need to also reduce the space required for the supporting passive components. If any of the electronic devices such as cellphone, camcorder, computer, or other consumer electronics system is opened, one or two circuit boards on which are mo ....etc

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Active and Passive Voice


In the active voice, the subject of the sentence performs the action:
I aced the exam.
Subject/actor verb object/thing acted on
In the passive voice, the object of the action becomes the subject of the sentence, and
the actor appears in a prepositional phrase, or is absent from the sentence:
The exam was aced (by me).
Subject verb actor/object of prepositional phrase
Use the active voice when the actor s identity is important.
Active: The butler did it. ....etc

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Stereoscopic Passive Millimeter-Wave Imaging and Ranging

Thomas L thi and Christian M tzler, Senior Member, IEE


Abstract

This paper presents the first stereoscopic range measurements
at a wavelength of 3.3 mmand discusses the accuracy of
this new method. The synthesis of passive millimeter-wave imaging
and stereoscopy combines the advantages of both principles, naturally
looking high-contrast images and superior poor-weather performance
(compared to visible and infrared wavelengths), as well
as the pas ....etc

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to get information about the topic ethernet passive optical networks full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-ethernet-passive-optical-networks

http://seminarsprojects.net/Thread-gigabit-ethernet-passive-optical-network-ge-pon ....etc

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what are the limitations of reflex klystron? ....etc

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Locally Adaptive Passive Error Concealment
for Wavelet Coded Images

Joost Rombaut, Aleksandra Pi zurica, Member, IEE, and Wilfried Philips, Member, IEE



Abstract

This letter presents a novel locally adaptive error concealment
method for subband coded images. For each lost low-frequency
coefficient, we estimate the optimal interpolation weights
from its neighborhood. The calculation of the interpolation weights
is optimized in the mean squared error sense, and it takes into account
the error ....etc

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Design and Testing of Superconducting Microwave Passive Components for Quantum Information Processing
Abstract
We report on the design, fabrication and testing of
two superconducting passive microwave components, a quadrature
hybrid and a 20 dB directional coupler. These components
are designed to be integrated with superconducting qubits or
Josephson parametric amplifiers and used in quantum information
processing applications. For the coupler, we measure return
loss and isolation 20 dB, and insertion loss 0.3 dB in a 2 G ....etc

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Abstract
A Gigabit Ethernet passive optical network (GE-PON)
The GE-PON includes an optical line terminal (OLT), a plurality of optical couplers, and a plurality of optical network units (ONUs). The OLT sets up an active page link and a standby page link in response to a registration request message received over an optical cable. Each of the ONUs is doubly connected with the OLT via the optical cable and is adapted to transmit the registration request message to the OLT, form the active page link with the OLT via the optical cable if it rec ....etc

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