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Phase Error Evaluation via Differentiation and Cross-Multiplication Demodulation in Phase-Sensitive Optical Time-Domain Reflectometry
(Peer reviewed; Journal article, 2023)Phase-sensitive optical time-domain reflectometry (φOTDR) is a technology for distributed vibration sensing, where vibration amplitudes are determined by recovering the phase of the backscattered light. Measurement noise ... -
Phased Array for UHF satellite ground station - Raising Efficiency and Lowering Costs through Heterodyne Steering
(Master thesis, 2024)Existing high gain antennas for the communication with orbiting satellites are often large to reach sufficient gain and require mechanical two-dimensional steering to be dynamically pointed at passing satellites (or other ... -
Photoluminescence study of as-grown self-catalyzed GaAs/AlGaAs core-shell nanowires
(Master thesis, 2012)A macro-photoluminescence study of self-catalyzed nanowires, using a specializedsetup for this purpose, has been performed. Several samples were even comparedto single nanowire micro-photoluminescence measurements, on the ... -
Photoluminescence Study of Enhanced Light Emission from HgCdTe Thin Films due to a Surface Pattern
(Master thesis, 2015)HgCdTe thin film samples with a CdTe passivation layer have been grown by molecular beam epitaxy, and photolithography has been used to etch a triangular pattern of holes into the passivation layer. The enhancement in ... -
Photonic crystal light emitting diode
(Master thesis, 2010)This master's thesis describe electromagnetic simulations of a gallium antimonide (GaSb) light emitting diode, LED. A problem for such devices is that most of the generated light is reflected from the surface due to total ... -
Photonic Crystal Structures: Design and Fabrication
(Master thesis, 2013)This thesis is devoted to the study of photonic crystal (PhC) design and fabrication. The design of a trigonal PhC waveguide is evaluated using finite element method (FEM) simulation software, and some considerations ... -
Photonic Crystal Waveguide Fabrication
(Master thesis, 2012)This research is entirely devoted to the study and fabrication of structures with periodic dielectric constants, also known as photonic crystals (PhCs). These structures show interesting dispersion characteristics which ... -
Photonic-crystal membranes for optical detection of single nano-particles, designed for biosensor application
(Peer reviewed; Journal article, 2012)A sensor designed to detect bio-molecules is presented. The sensor exploits a planar 2D photonic crystal (PC) membrane with sub-micron thickness and through holes, to induce high optical fields that allow detection of ... -
Physical Layer Security for In-Body Wireless Cardiac Sensor Network
(Doctoral theses at NTNU;2020:136, Doctoral thesis, 2020)The thesis explores the physical layer security approaches for securing an in body multi-nodal leadless cardiac pacemaker (LCP) communication system. Pacemakers are implanted medical devices, used to treat different types ... -
Physical-Statistical Channel Model for Off-body Area Network
(Journal article; Peer reviewed, 2017)Abstract: In this letter, a physical-statistical-based channel model for off-body wireless communications is presented. The model utilizes a dynamic human walking model, which provides detailed description of the movement ... -
Physically Based Rendering on Mobile
(Master thesis, 2023)Mobile phones are widely used and its hardware is now capable of rendering advanced graphics. Physically based rendering (PBR) is a technique which makes computer graphics look realistic and professional. PBR has been used ... -
Physics-based Analytical Engineering Models of Graphene Micro- and Nanostrip Lines
(Journal article; Peer reviewed, 2019)In this paper, new approximate analytical models of graphene-based micro-and nanostrip transmission lines are given. These models are based on the representation of the mentioned lines by a parallel-plate waveguide embedded ... -
Physics-based characterization of soft marine sediments using vector sensors
(Peer reviewed; Journal article, 2021)In a 2007 experiment conducted in the northern North Sea, observations of a low-frequency seismo-acoustic wave field with a linear horizontal array of vector sensors located on the seafloor revealed a strong, narrow peak ... -
Physics-informed and learning-based approaches to biomedical hyperspectral data analysis
(Doctoral theses at NTNU;2021:157, Doctoral thesis, 2021)The high spectral and spatial resolution of hyperspectral imaging makes it a promising imaging technique for a wide range of biomedical applications. A recurring challenge is the handling and processing of the large amounts ... -
Plasma-assisted oxide removal from p-type GaSb for low resistivity ohmic contacts
(Journal article, 2015)The effect of several plasma-assisted oxide removal techniques prior to metallization of p-type GaSb was investigated. Compared to conventional chemical methods, the plasma-assisted oxide removal resulted in significant ... -
Plasmonic FET Terahertz Spectrometer
(Peer reviewed; Journal article, 2020)We show that Si MOSFETs, AlGaN/GaN HEMTs, AlGaAs/InGaAs HEMTs, and p-diamond FETs with feature sizes ranging from 20 nm to 130 nm could operate at room temperature as THz spectrometers in the frequency range from 110 GHz ... -
Point to point wireless audio with limited bandwidth and processing
(Master thesis, 2012)This project investigates the possibility of implementing a point-to-point wireless audio transmission system for real-time operation on a specific embedded platform. The platform is originally intended for wireless PC ... -
Polarization Dependent Loss (PDL) in Polarization Multiplexed and Hybrid Optical Networks
(Master thesis, 2007)Study of the Polarization Dependent Loss caused by the combined effect of orthogonality degradation and dynamic power fluctuations in a hybrid network, which combines circuit switching with packet switching to transmit ... -
Polarization Effects in Wavelength Converters based on Semiconductor Optical Amplifiers
(Master thesis, 2007)Polarization Effects in Wavelength Converters based on Semiconductor Optical Amplifiers -
Polarization Sensing In an Urban Environment - Exploring The Sensing Potential of Telecom infrastructure
(Master thesis, 2023)Optiske fibernettverk har blitt hovedtransportmiddelet for informasjon i den moderne verden. Etterhvert som det globale fibernettverket vokser, åpner det seg muligheter for nye komplementære anvendelser i tillegg til de ...