Browsing by Title
Now showing items 1797717996 of 25401

Polar compressive sampling: A novel technique using polar codes
(IEEE, 2010)Recently introduced Polar coding is the first practical coding technique that can be proven to achieve the Shannon capacity for a multitude of communication channels. Polar codes are close to ReedMuller codes except the ... 
Polar optical phonon scattering and negative KromerEsakiTsu differential conductivity in bulk GaN
(Elsevier, 200109)GaN is being considered as a viable alternative semiconductor for highpower solidstate electronics. This creates a demand for the characterization of the main scattering channel at high electric fields. The dominant ... 
Polar Policryps diffractive structures generate cylindrical vector beams
(American Institute of Physics Inc., 2015)Local shaping of the polarization state of a light beam is appealing for a number of applications. This can be achieved by employing devices containing birefringent materials. In this article, we present one such enables ... 
Polar vs. nonpolar InGaN/GaN quantum heterostructures: Opposite quantum confined electroabsorption and carrier dynamics behavior
(IEEE, 2010)We present a study of quantum confined electroabsorption and carrier dynamics in polar cplane and nonpolar aplane InGaN/GaN quantum heterostructures. We demonstrate redshifting absorption edge, due to quantum confined ... 
Polarization characteristics of compact SOI rib waveguide racetrack resonators
(IEEE, 2005)We report on the development of compact optical racetrack resonators on silicononinsulator (SOI) rib waveguides. We make use of largecrosssection waveguides instead of photonic wire waveguides. We fabricated resonators ... 
Polarization for arbitrary discrete memoryless channels
(IEEE, 2009)Channel polarization, originally proposed for binaryinput channels, is generalized to arbitrary discrete memoryless channels. Specifically, it is shown that when the input alphabet size is a prime number, a similar ... 
Polarization included geometry based channel modeling for MIMO systems
(Bilkent University, 2008)Most of the studies in the literature about channel modeling do not include the polarization. Aiming to develop a more realistic geometric model including polarization, the channel characteristics are examined using ... 
Polarization independent thermooptic modulators for integrated optics
(Bilkent University, 2003)In this work, we studied MMI and Yjunction based MachZehnder modulators on both silicononinsulator and polymer based on thermooptic effect. Both Pπ values and frequency response of the devices were measured and ... 
Polarization of dipole radiation in quantum domain
(American Physical Society, 1998)For a dipole radiation, the set of generalized Stokes parameters and corresponding Stokes operators are discussed. A qualitatively new behavior of quantum fluctuations of the Stokes parameters is predicted. The possibility ... 
Polarization of free electromagnetic field and electromagnetic radiation in quantum domain
(Institute of Physics Publishing, 19980706)Il is shown that conventional disreg;ird.of lo.ngitudinal component, which always e~ists iil radiation ofa localized source, can lead to some. qualitative errors in the description 9f polarization within the quantum domain. ... 
Polarization of free electromagnetic field and electromagnetic radiation in quantum domain
(1999)It is shown that conventional disregard of longitudinal component, which always exists in radiation of a localized source, can lead to some qualitative errors in the description of polarization within the quantum domain. ... 
Polarization of radiation in multipole JaynesCummings model
(Taylor & Francis Ltd, 2002)We discuss the spatial properties of quantum radiation emitted by a multipole transition in a single atom. It is shown that the polarization of multipole radiation and quantum fluctuations of polarization change with ... 
Polarization selfscreening in [0001] oriented InGaN/GaN lightemitting diodes for improving the electron injection efficiency
(AIP Publishing, 2014)InGaN/GaN lightemitting diodes (LEDs) grown along the [0001] orientation inherit very strong polarization induced electric fields. This results in a reduced effective conduction band barrier height for the ptype AlGaN ... 
Polarizationdependent circular Dammann grating made of azodye doped liquid crystals
(Optical Society of America, 20110519)A polarizationdependent circular Dammann grating (CDG) was generated from an azodyedoped liquid crystal (LC) cell. A simple multiexposure photoalignment process was used to fabricate a binary phase LC CDG zone plane, ... 
Polaronic effects in a gaussian quantum dot
(Elsevier, 2008)The problem of an electron interacting with longitudinaloptical (LO) phonons is investigated in an Ndimensional quantum dot with symmetric Gaussian confinement in all directions using the RayleighSchrödinger perturbation ... 
Polaronic effects in asymmetric quantum wire: An allcopuling variational approach
(Elsevier, 200605)An allcoupling variational calculation based on LeeLowPinesHuybrechts (LLPH) theory is performed to study the ground state and the first excited state in an asymmetric polar semiconductor quantum wire that is valid for ... 
Polatlı Belediyespor Kadın Hentbol Takımı'nın tarihi
(Bilkent University, 2020)Araştırma konumuz Polatlı Belediyespor Kadın Hentbol Takımı tarihi olup öncelikle hentbolun genel tarihi araştırılmış ve Polatlı Belediyesi'nin spor üzerine yaptığı çalışmalar ortaya konulmuştur. Polatlı Belediyesi'nin ... 
Polatlı'nın Kurtuluş Savaşındaki rolü
(Bilkent University, 2014) 
Pole assignment problem: A structural investigation
(Taylor & Francis, 1991)Based on the structure of a closedloop system under a specified feedback pattern, a qualitative analysis of the problem of pole assignability is considered. The problem is first formulated algebraically, in terms of the ... 
Polezero computation in microwave circuits using multipoint Padé approximation
(Institute of Electrical and Electronics Engineers, 199501)A new method is proposed for dominant pole zero (or poleresidue) analysis of large linear microwave circuits containing both lumped and distributed elements. The method is based on a multipoint Padé approximation. It ...