Relevant bibliographies by topics / Polarization modulator

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Polarization modulator'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Polarization modulator.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Polarization modulator"

1

Xu, Yin, Feng Li, Zhe Kang, Dongmei Huang, Xianting Zhang, Hwa-Yaw Tam, and P. Wai. "Hybrid Graphene-Silicon Based Polarization-Insensitive Electro-Absorption Modulator with High-Modulation Efficiency and Ultra-Broad Bandwidth." Nanomaterials 9, no. 2 (January 27, 2019): 157. http://dx.doi.org/10.3390/nano9020157.

Full text
Abstract:
Polarization-insensitive modulation, i.e., overcoming the limit of conventional modulators operating under only a single-polarization state, is desirable for high-capacity on-chip optical interconnects. Here, we propose a hybrid graphene-silicon-based polarization-insensitive electro-absorption modulator (EAM) with high-modulation efficiency and ultra-broad bandwidth. The hybrid graphene-silicon waveguide is formed by leveraging multi-deposited and multi-transferred methods to enable light interaction with graphene layers in its intense field distribution region instead of the commonly used weak cladding region, thus resulting in enhanced light–graphene interaction. By optimizing the dimensions of all hybrid graphene-silicon waveguide layers, polarization-insensitive modulation is achieved with a modulation efficiency (ME) of ~1.11 dB/µm for both polarizations (ME discrepancy < 0.006 dB/µm), which outperforms that of previous reports. Based on this excellent modulation performance, we designed a hybrid graphene-silicon-based EAM with a length of only 20 µm. The modulation depth (MD) and insertion loss obtained were higher than 22 dB and lower than 0.23 dB at 1.55 µm, respectively, for both polarizations. Meanwhile, its allowable bandwidth can exceed 300 nm by keeping MD more than 20 dB and MD discrepancy less than 2 dB, simultaneously, and its electrical properties were also analyzed. Therefore, the proposed device can be applied in on-chip optical interconnects.
APA, Harvard, Vancouver, ISO, and other styles
2

Zou, Xinhai, Yujia Zhang, Zhihui Li, Yiwei Yang, Shangjian Zhang, Zhiyao Zhang, Yali Zhang, and Yong Liu. "Polarization-Insensitive Phase Modulators Based on an Embedded Silicon-Graphene-Silicon Waveguide." Applied Sciences 9, no. 3 (January 28, 2019): 429. http://dx.doi.org/10.3390/app9030429.

Full text
Abstract:
A polarization-insensitive phase modulator concept is presented, based on an embedded silicon-graphene-silicon waveguide. Simulation results show that the effective mode index of both transverse electric (TE) and transverse magnetic (TM) modes in the silicon-graphene-silicon waveguide undergoes almost the same variations under different biases across a broad wavelength range, in which the real-part difference is less than 1.2 × 10−3. Based on that, a polarization-insensitive phase modulator is demonstrated, with a 3-dB modulation bandwidth of 135.6 GHz and a wavelength range of over 500 nm. Moreover, it has a compact size of 60 μm, and a low insertion loss of 2.12 dB. The proposed polarization-insensitive waveguide structure could be also applied to Mach-Zehnder modulators and electro-absorption modulators.
APA, Harvard, Vancouver, ISO, and other styles
3

Yang, D., J. C. Canit, and E. Gaignebet. "Photoelastic modulator: polarization modulation and phase modulation." Journal of Optics 26, no. 4 (July 1995): 151–59. http://dx.doi.org/10.1088/0150-536x/26/4/002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Liu, Qiushi, and Ming Liu. "Circular-polarization modulator." Nature Photonics 11, no. 10 (September 29, 2017): 614–16. http://dx.doi.org/10.1038/s41566-017-0015-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Feng, Li Shuang, Bo Hao Yin, Zhen Zhou, Jia Wei Sui, and Chen Long Li. "Design and Simulation of a Polarization-Independent Active Metamaterial Terahertz Modulator." Applied Mechanics and Materials 455 (November 2013): 167–72. http://dx.doi.org/10.4028/www.scientific.net/amm.455.167.

Full text
Abstract:
The design and simulation of a polarization-independent active metamaterial terahertz modulator is presented in this work. The device incorporates an array of gold triple SRRs on an n-doped gallium arsenide layer to create an active metamaterial terahertz modulator with a high modulation depth, a high modulation speed and an especial polarization-independent performance for use in terahertz communication, imaging and sense.We established the theoretical model and simulatedthe key performances of the device with Ansoft HFSS.The results showed that the device exhibits a polarization-insensitivebehavior with a maximum amplitude modulation depth of 71% and a modulation rate of3.2Mbps at the resonance frequency of0.86 THz.
APA, Harvard, Vancouver, ISO, and other styles
6

Zhao, Feng, Jianjun Yu, and Jingling Li. "Dual-services generation using an integrated polarization multiplexing modulator." Chinese Optics Letters 18, no. 11 (2020): 110601. http://dx.doi.org/10.3788/col202018.110601.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Jullien, Aurélie. "Spatial light modulators." Photoniques, no. 101 (March 2020): 59–64. http://dx.doi.org/10.1051/photon/202010159.

Full text
Abstract:
Spatial Light Modulators (SLMs) are quasiplanar devices, allowing for the modulation of the amplitude, phase and polarization, or a combination of these parameters of an incident light beam according to the two spatial dimensions of the modulator. SLMs are employed in many different fields and are the subject of continuous technological development.
APA, Harvard, Vancouver, ISO, and other styles
8

Wan, Yuhang, Mengxuan Cheng, Zheng Zheng, and Kai Liu. "Polarization-Modulated, Goos–Hanchen Shift Sensing for Common Mode Drift Suppression." Sensors 19, no. 9 (May 5, 2019): 2088. http://dx.doi.org/10.3390/s19092088.

Full text
Abstract:
A polarization-modulation-based Goos–Hanchen (GH) sensing scheme leveraging the polarization-dependence of the Bloch surface wave enhanced GH shift is proposed and experimentally demonstrated. Based on a simple setup utilizing a liquid crystal modulator to switch the polarization state of the input beam periodically, the alternating positions of the reflected beam for both polarizations are monitored by a lock-in amplifier to handily retrieve the GH shift signal. The conventional direct measurement of the beam position for the target state of polarization is vulnerable to instabilities in the optomechanical setup and alignment. Our proposed scheme provides a sensitive yet robust GH shift-sensing setup where the common mode drift and noise could be suppressed to ensure better system stability.
APA, Harvard, Vancouver, ISO, and other styles
9

Maeda, Shiro, Kazuhiro Nakae, and Yohji Shindo. "High-Performance Photoelastic Modulator for Polarization Modulation Spectrometer." Enantiomer: A Journal of Sterochemistry 7, no. 4-5 (July 2002): 175–83. http://dx.doi.org/10.1080/10242430212885.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hu, Xiao, and Jian Wang. "Design of graphene-based polarization-insensitive optical modulator." Nanophotonics 7, no. 3 (February 23, 2018): 651–58. http://dx.doi.org/10.1515/nanoph-2017-0088.

Full text
Abstract:
AbstractBy exploiting the electroabsorption effect of graphene, we present a graphene-based polarization-insensitive optical modulator. The waveguide structure consists of a silica substrate, high-index silicon strip waveguide, Si3N4dielectric spacer, two graphene layers, and two metal electrodes. The modulator performance is comprehensively studied in terms of attenuation, insertion loss, modulation depth, and bandwidth. We achieve broadband >16 dB attenuation graphene-based optical modulator over a 35 nm wavelength range (covering C band) with an imbalance of no >1 dB and insertion loss of <2 dB for transverse magnetic and transverse electric polarized modes. Moreover, the electrical properties such as energy per bit consumption (Ebit) are also studied.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Polarization modulator"

1

Keeling, David. "Novel thin film optical modulator/tunable retarder." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/29595.

Full text
Abstract:
Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2007.
Committee Chair: A. Rahman Zaghloul ; Committee Members: W. Russell Callen and Doug Yoder. Part of the SMARTech Electronic Thesis and Dissertation Collection.
APA, Harvard, Vancouver, ISO, and other styles
2

Runyon, Matthew. "Experimental Design and Implementation of Two Dimensional Transformations of Light in Waveguides and Polarization." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36881.

Full text
Abstract:
Photonics, the technological field that encompasses all aspects of light, has been rapidly growing and increasingly useful in uncovering fundamental truths about nature. It has helped detect gravitational waves, allowed for a direct measurement of the quantum wave function, and has helped realize the coldest temperatures in the universe. But photonics has also had an enormous impact on day-to-day life as well; it has enabled high capacity and/or high speed telecommunication, offered cancer treatment solutions, and has completely revolutionized display and scanning technology. All of these discoveries and applications have required a superb understanding of light, but also a high degree of control over the sometimes abstract properties of light. The work contained in this thesis explores two novel means of controlling and manipulating two different abstract properties of light. In Part I, the property under investigation is the polarization state of light – a property that is paramount to all light-matter interactions, and even some light-light interactions such as interference. Here, a liquid crystal on silicon spatial light modulator (LCOS-SLM)’s capabilities in manipulating the polarization state of light is theoretically examined and experimentally exploited, tested, and reported on. It is found through experimentation that, for an appropriate range of beam sizes and input polarizations, a single LCOS-SLM can be used to produce any light field with an arbitrary, spatially varying polarization profile. In Part II, the property under investigation loosely corresponds to light’s spatial degree of freedom – how light can move from one spot in space to another in a non-trivial manner. Here, control over light’s position through a waveguide array through the use of quantum geometric phase is theoretically examined, simulated, and experimentally designed. It is found through simulation that a threewaveguide array is capable of implementing two dimensional unitary transformations. The common theme between Part I and Part II is manipulating these properties of light to realize classes of general transformations. Moreover, if the light field is treated as a quantum state in the basis of either property under investigation, a two dimensional computational basis ensues. This is precisely the right cardinality for applications in quantum information.
APA, Harvard, Vancouver, ISO, and other styles
3

Dasgupta, Abhijeet. "High efficiency S-Band vector power modulator design using GaN technology." Thesis, Limoges, 2018. http://www.theses.fr/2018LIMO0021/document.

Full text
Abstract:
L’évolution des systèmes de télécommunications, liée à une demande sans cesse croissante en termes de débit et de volume de données, se concrétise par le développement de systèmes proposant des bandes passantes très larges, des modulations à très hautes efficacités spectrales, de la flexibilité en puissance et en fréquence d’émission. Par ailleurs, la mise en œuvre de ces dispositifs doit se faire avec un souci permanent d’économie d’énergie d’où la problématique récurrente de l’amplification de puissance RF qui consiste à allier au mieux rendement, linéarité et bande passante. L’architecture conventionnelle d’une chaine d’émission RF consiste dans une première étape à réaliser l’opération de modulation-conversion de fréquence (Modulateur IQ) puis dans une deuxième étape l’opération de conversion d’énergie DC-RF (Amplificateur de Puissance), ces deux étapes étant traditionnellement traitées de manière indépendante. L’objectif de ces travaux de thèse est de proposer une approche alternative qui consiste à combiner ces deux opérations dans une seule et même fonction : le modulateur vectoriel de puissance à haute efficacité énergétique. Le cœur du dispositif, conçu en technologie GaN, repose sur un circuit à deux étages de transistors HEMT permettant d’obtenir un gain en puissance variable en régime de saturation. Il est associé à un modulateur de polarisation multi-niveaux spécifique également en technologie GaN. Le dispositif réalisé a permis de générer directement, à une fréquence de 2.5 GHz, une modulation vectorielle 16QAM (100Msymb/s) de puissance moyenne 13 W, de puissance crête 25W avec un rendement global de 40% et une linéarité mesurée par un EVM à 5%
The evolution of telecommunications systems, linked to a constantly increasing demand in terms of data rate and volume, leads to the development of systems offering very wide bandwidths, modulations with very high spectral efficiencies, increased power and frequency flexibilities in transmitters. Moreover, the implementation of such systems must be done with a permanent concern for energy saving, hence the recurring goal of the RF power amplification which is to combine the best efficiency, linearity and bandwidth. Conventional architectures of RF emitter front-ends consist in a first step in performing the frequency modulation-conversion operation (IQ Modulator) and then in a second step the DC-RF energy conversion operation (Power Amplifier), these two steps being usually managed independently. The aim of this thesis is to propose an alternative approach that consists in combining these two operations in only one function: a high efficiency vector power modulator. The core of the proposed system is based on a two-stage GaN HEMT circuit to obtain a variable power gain operating at saturation. It is associated with a specific multi-level bias modulator also design using GaN technology. The fabricated device generates, at a frequency of 2.5 GHz, a 16QAM modulation (100Msymb/s) with 13W average power, 25W peak power, with an overall efficiency of 40% and 5% EVM
APA, Harvard, Vancouver, ISO, and other styles
4

Zhou, Sichao. "Complex Optical Fields Generation Using a Vectorial Optical Field Generator." University of Dayton / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1461689435.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Hällstig, Emil. "Nematic Liquid Crystal Spatial Light Modulators for Laser Beam Steering." Doctoral thesis, Uppsala University, Quantum Chemistry, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4693.

Full text
Abstract:

Laser beam control is important in many applications. Phase modulating spatial light modulators (SLMs) can be used to electronically alter the phase distribution of an optical wave-front and thus change the direction and shape of a laser beam. Physical constraints set limitations to the SLM and an ideal phase distribution can usually not be realised. In order to understand how such components can be used for non-mechanical beam control three nematic liquid crystal (NLC) SLMs have been thoroughly characterised and modelled.

The pixel structure and phase quantisation give a discrepancy between ideal and realised phase distributions. The impact on beam steering capability was examined by measurements and simulations of the intensity distribution in the far-field.

In two of the studied SLMs the pixel period was shorter than the thickness of the LC layer giving the optical phase shift. This results in a so-called “fringing field”, which was shown to degrade the phase modulation and couple light between polarisation modes. The deformation of the LC was simulated and a finite-difference time-domain (FDTD) algorithm was used to calculate how polarised light propagates through the optically anisotropic SLM.

Non-mechanical beam steering and tracking in an optical free-space communication link were demonstrated. Continual optimisation of the steering angle was achieved by feedback from a video camera.

The optical properties of the SLM in the time period right after a voltage update were studied. It was shown how light is redistributed between orders during the switching from one blazed grating to another. By appropriate choice of the blazed gratings the effects on the diffraction efficiency can be minimised.

The detailed knowledge of the SLM structure and its response to electronic control makes it possible to predict and optimise the device performance in future systems.

APA, Harvard, Vancouver, ISO, and other styles
6

Tang, Yongbo. "Study on electroabsorption modulators and grating couplers for optical interconnects." Doctoral thesis, KTH, Mikroelektronik och tillämpad fysik, MAP, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-24178.

Full text
Abstract:
Decades of efforts have pushed the replacement of electrical interconnects by optical links to the interconnects between computers, racks and circuit boards. It may be expected that optical solutions will further be used for inter-chip and intra-chip interconnects with potential benefits in bandwidth, capacity, delay, power consumption and crosstalk. Silicon integration is emerging to be the best candidate nowadays due to not only the dominant status of silicon in microelectronics but also the great advantages brought to the photonic integrated circuits (PICs). Regarding the recent breakthroughs concerning active devices on silicon substrate, the question left is no longer the feasibility of the optical interconnects based on silicon but the competitiveness of the silicon device compared with other alternatives. This thesis focuses on the study of two key components for the optical interconnects, both especially designed and fabricated for silicon platform. One is a high speed electroabsorption modulator (EAM), realized by transferring an InP-based segmented design to the hybrid silicon evanescent platform. The purpose here is to increase the speed of the silicon PICs to over 50  Gb/s or more. The other one is a high performance grating coupler, with the purpose to improve the optical interface between the silicon PICs and the outside fiber-based communication system. An general approach based on the transmission line analysis has been developed to evaluate the modulation response of an EAM with a lumped, traveling-wave, segmented or capacitively-loaded configuration. A genetic algorithm is used to optimize its configuration. This method has been applied to the design of the EAMs on hybrid silicon evanescent platform. Based on the comparison of various electrode design, segmented configuration is adopted for the target of a bandwidth over 40 GHz with as low as possible voltage and high extinction ratio. In addition to the common periodic analysis, the grating coupler is analyzed by the antenna theory assisted with an improved volume-current method, where the directionality of a grating coupler can be obtained analytically. In order to improve the performance of the grating coupler, a direct way is to address its shortcoming by e.g. increasing the coupling efficiency. For this reason, a nonuniform grating coupler with apodized grooves has been developed with a coupling efficiency of 64%, nearly a double of a standard one. Another way is to add more functionalities to the grating coupler. To do this, a polarization beam splitter (PBS) based on a bidirectional grating coupler has been proposed and experimentally demonstrated. An extinction ratio of around -20 dB, as well as a maximum coupling efficiency of over 50% for both polarizations, is achieved by such a PBS with a Bragg reflector underneath.
QC 20100906
APA, Harvard, Vancouver, ISO, and other styles
7

Lin, Yi-Hsin. "POLARIZATION-INDEPENDENT LIQUID CRYSTAL DEVICES." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4199.

Full text
Abstract:
Liquid crystal (LC) devices can be operated as amplitude modulators and phase modulators. LC amplitude modulation is commonly used in liquid crystal display (LCD) while phase-only modulation is useful for laser beam steering, tunable grating, prism, lens, and other photonic devices. Most LC devices are polarization dependent and require at least one polarizer. As a result, the optical efficiency is low. To enhance display brightness, a power hungry backlight has to be used leading to a high power consumption and short battery life. In a LC phase modulator, the polarization dependent property complicates the laser beam steering system. It is highly desirable to develop new operating mechanisms that are independent of the incident light polarization. In this dissertation, we have developed eight polarization-independent liquid crystal operation principles: three of them are aimed for displays and the other five are for phase modulators. For amplitude modulations, a new polymer-dispersed liquid crystal (PDLC) and two new dye-doped LC gels are polarizer-free by combining light scattering with dye-absorption effects. In phase modulation, we explore five device concepts: PDLC and Polymer-Stabilized Cholesteric Texture (PSCT), homeotropic LC gels, thin polymer film separated double-layered structure, and double-layered LC gels. In the low voltage regime, both PDLC and PSCT have a strong light scattering. However, as the voltage exceeds a certain level, the phase modulation is scattering-free and is independent of polarization. The homeotropic LC gels do not require any biased voltage and the response time is still fast. Although the remaining phase in these devices is small, they are still useful for micro-photonic device applications. To increase the phase change, thin polymer film separated double-layered structure is a solution. The orthogonal arrangement of top and bottom LC directors results in polarization independence. However, the response time is slow. Similarly, double-layered LC gels are not only polarization independent but also fast response due to the established polymer network.
Ph.D.
Optics and Photonics
Optics
APA, Harvard, Vancouver, ISO, and other styles
8

Stoller, Patrick C. "Polarization-modulated second harmonic generation microscopy in collagen /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Robinson, Risa J. "Polarization modulation and splicing techniques for stressed birefringent fiber /." Online version of thesis, 1995. http://hdl.handle.net/1850/12228.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

LaCasse, Charles. "Modulated Imaging Polarimetry." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/247279.

Full text
Abstract:
In this work, image processing algorithms are presented for an advanced sensor classification known collectively as imaging modulated polarimetry. The image processing algorithms presented are novel in that they use frequency domain based approaches, in comparison to the data domain based approaches that all previous algorithms have employed. Under the conditions on the data and imaging device derived in this work, the frequency domain based demodulation algorithms will optimally reduced reconstruction artifacts in a least squared sense. This work provides a framework for objectively comparing polarimeters that modulate in different domains (i.e. time vs. space), referred to as the spectral density response function. The spectral density response function is created as an analog to the modulation transfer function (or the more general transfer function for temporal devices) employed in the design of conventional imaging devices. The framework considers the total bandwidth of the object to be measured, and then can consider estimation artifacts that arise in both time and space due to the measurement modality that has been chosen. Using the framework for objectively comparing different modulated polarimeters (known as the spectral density response function), a method of developing a Wiener filter for multi-signal demodulation is developed, referred to as the polarimetric Wiener filter. This filter is then shown to be optimal for one extensive test case. This document provides one extensive example of implementing the algorithms and spectral density response calculations on a real system, known as the MSPI polarimeter. The MSPI polarimeter has been published extensively elsewhere, so only a basic system description here is used as necessary to describe how the methods presented here can be implemented on this system.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Polarization modulator"

1

Lauer, James L. Polarization modulated ellipsometry. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Division, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Brand, Izabella. Application of Polarization Modulation Infrared Reflection Absorption Spectroscopy in Electrochemistry. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-42164-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

George C. Marshall Space Flight Center., ed. Development of a large field-of-view KD*P modulator: Center director's discretionary fund final report (project no. 91-23). [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Brand, Izabella. Application of Polarization Modulation Infrared Reflection Absorption Spectroscopy in Electrochemistry. Springer, 2020.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Badimon, Lina, and Gemma Vilahur. Atherosclerosis and thrombosis. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199687039.003.0040.

Full text
Abstract:
Atherosclerosis is the main underlying cause of heart disease. The continuous exposure to cardiovascular risk factors induces endothelial activation/dysfunction which enhances the permeability of the endothelial layer and the expression of cytokines/chemokines and adhesion molecules. This results in the accumulation of lipids (low-density lipoprotein particles) in the extracellular matrix and the triggering of an inflammatory response. Accumulated low-density lipoprotein particles suffer modifications and become pro-atherogenic, enhancing leucocyte recruitment and further transmigration across the endothelium into the intima. Infiltrated monocytes differentiate into macrophages which acquire a specialized phenotypic polarization (protective or harmful), depending on the stage of the atherosclerosis progression. Once differentiated, macrophages upregulate pattern recognition receptors capable of engulfing modified low-density lipoprotein, leading to foam cell formation. Foam cells release growth factors and cytokines that promote vascular smooth muscle cell migration into the intima, which then internalize low-density lipoprotein via low-density lipoprotein receptor-related protein-1 receptors. As the plaque evolves, the number of vascular smooth muscle cells decline, whereas the presence of fragile/haemorrhagic neovessels increases, promoting plaque destabilization. Disruption of this atherosclerotic lesion exposes thrombogenic surfaces that initiate platelet adhesion, activation, and aggregation, as well as thrombin generation. Both lipid-laden vascular smooth muscle cells and macrophages release the procoagulant tissue factor, contributing to thrombus propagation. Platelets also participate in progenitor cell recruitment and drive the inflammatory response mediating the atherosclerosis progression. Recent data attribute to microparticles a potential modulatory effect in the overall atherothrombotic process. This chapter reviews our current understanding of the pathophysiological mechanisms involved in atherogenesis, highlights platelet contribution to thrombosis and atherosclerosis progression, and provides new insights into how atherothrombosis may be modulated.
APA, Harvard, Vancouver, ISO, and other styles
6

Badimon, Lina, and Gemma Vilahur. Atherosclerosis and thrombosis. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199687039.003.0040_update_001.

Full text
Abstract:
Atherosclerosis is the main underlying cause of heart disease. The continuous exposure to cardiovascular risk factors induces endothelial activation/dysfunction which enhances the permeability of the endothelial layer and the expression of cytokines/chemokines and adhesion molecules. This results in the accumulation of lipids (low-density lipoprotein particles) in the intimal layer and the triggering of an inflammatory response. Accumulated low-density lipoprotein particles attached to the extracellular matrix suffer modifications and become pro-atherogenic, enhancing leucocyte recruitment and further transmigration across the endothelium into the intima. Infiltrated pro-atherogenic monocytes (mainly Mon2) differentiate into macrophages which acquire a specialized phenotypic polarization (protective/M1 or harmful/M2), depending on the stage of the atherosclerosis progression. Once differentiated, macrophages upregulate pattern recognition receptors capable of engulfing modified low-density lipoprotein, leading to foam cell formation. Foam cells release growth factors and cytokines that promote vascular smooth muscle cell migration into the intima, which then internalize low-density lipoproteins via low-density lipoprotein receptor-related protein-1 receptors becoming foam cells. As the plaque evolves, the number of vascular smooth muscle cells decline, whereas the presence of fragile/haemorrhagic neovessels and calcium deposits increases, promoting plaque destabilization. Disruption of this atherosclerotic lesion exposes thrombogenic surfaces rich in tissue factor that initiate platelet adhesion, activation, and aggregation, as well as thrombin generation. Platelets also participate in leucocyte and progenitor cell recruitment are likely to mediate atherosclerosis progression. Recent data attribute to microparticles a modulatory effect in the overall atherothrombotic process and evidence their potential use as systemic biomarkers of thrombus growth. This chapter reviews our current understanding of the pathophysiological mechanisms involved in atherogenesis, highlights platelet contribution to thrombosis and atherosclerosis progression, and provides new insights into how atherothrombosis may be prevented and modulated.
APA, Harvard, Vancouver, ISO, and other styles
7

Badimon, Lina, and Gemma Vilahur. Atherosclerosis and thrombosis. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199687039.003.0040_update_002.

Full text
Abstract:
Atherosclerosis is the main underlying cause of heart disease. The continuous exposure to cardiovascular risk factors induces endothelial activation/dysfunction which enhances the permeability of the endothelial layer and the expression of cytokines/chemokines and adhesion molecules. This results in the accumulation of lipids (low-density lipoprotein particles) in the intimal layer and the triggering of an inflammatory response. Accumulated low-density lipoprotein particles attached to the extracellular matrix suffer modifications and become pro-atherogenic, enhancing leucocyte recruitment and further transmigration across the endothelium into the intima. Infiltrated pro-atherogenic monocytes (mainly Mon2) differentiate into macrophages which acquire a specialized phenotypic polarization (protective/M1 or harmful/M2), depending on the stage of the atherosclerosis progression. Once differentiated, macrophages upregulate pattern recognition receptors capable of engulfing modified low-density lipoprotein, leading to foam cell formation. Foam cells release growth factors and cytokines that promote vascular smooth muscle cell migration into the intima, which then internalize low-density lipoproteins via low-density lipoprotein receptor-related protein-1 receptors becoming foam cells. As the plaque evolves, the number of vascular smooth muscle cells decline, whereas the presence of fragile/haemorrhagic neovessels and calcium deposits increases, promoting plaque destabilization. Disruption of this atherosclerotic lesion exposes thrombogenic surfaces rich in tissue factor that initiate platelet adhesion, activation, and aggregation, as well as thrombin generation. Platelets also participate in leucocyte and progenitor cell recruitment are likely to mediate atherosclerosis progression. Recent data attribute to microparticles a modulatory effect in the overall atherothrombotic process and evidence their potential use as systemic biomarkers of thrombus growth. This chapter reviews our current understanding of the pathophysiological mechanisms involved in atherogenesis, highlights platelet contribution to thrombosis and atherosclerosis progression, and provides new insights into how atherothrombosis may be prevented and modulated.
APA, Harvard, Vancouver, ISO, and other styles
8

Wehrey, Frederic, and Anouar Boukhars. Salafism in the Maghreb. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190942403.001.0001.

Full text
Abstract:
This volume explores the growth and transformation of a particular variant of Islamism—Salafism—in the Maghreb region. Drawing on extensive fieldwork and from previous scholarship on Salafi typologies—specifically, quietist, political, and jihadist variants—it seeks to understand the socioeconomic and political drivers between the growth or diminishing of each trend. The volume pays particular attention to exploring how state-sponsored Salafists compete with more informal, nonstate, and transnational variants, particularly jihadists. It analyses how local political contexts determine the calculations and trajectories of Salafist factions that appear to share a certain doctrinal uniformity but whose actual practice on the ground, in the sphere of Arab politics, varies significantly. Specifically, it assesses state capacities and policies toward Salafis as a crucial variable that has shaped the transformation of Salafism across the Maghreb’s different countries. A key feature of the book is its attention to the blurring of the boundaries between Salafi quietism, political activism, and the imperative, in some countries, for Salafis to modulate aspects of their doctrine to gain public support. It concludes with the observation that Salafism’s growth is the product of a growing and youthful disenchantment with the existing order and especially authoritarianism, corruption, and dislocation. At a time of heightened polarization in the region and unfortunate American misapprehensions of Islamism—at both public and official levels—the book’s granular insights provide correctives for understanding a diverse religious current that has too often been synonymous with extremism.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Polarization modulator"

1

Karmakar, Subhajit, Ravendra K. Varshney, and Dibakar Roy Chowdhury. "Polarization Sensitive Terahertz Modulator Based on Electrically Controlled Fano Metasurfaces." In Springer Proceedings in Physics, 895–98. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9259-1_205.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Weik, Martin H. "polarization modulation." In Computer Science and Communications Dictionary, 1296. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_14265.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Jellison, Gerald E., and Frank A. Modine. "Polarization Modulation Ellipsometry." In Handbook of Ellipsometry, 433–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27488-x_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Schellman, J. A. "Polarization Modulation Spectroscopy." In Polarized Spectroscopy of Ordered Systems, 231–74. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3039-1_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Kulikovska, Olga A., Victor B. Taranenko, and Vladimir Yu Bazhenov. "Time-resolved nonlinear polarization-modulated spectroscopy of bacteriorhodopsin." In Spectroscopy of Biological Molecules: New Directions, 181–82. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4479-7_80.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Serdega, B. K., S. P. Rudenko, L. S. Maksimenko, and I. E. Matyash. "Plasmonic optical properties and the polarization modulation technique." In Polarimetric Detection, Characterization and Remote Sensing, 473–500. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1636-0_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

de las Casas-Engel, Mateo, and Angel L. Corbí. "Serotonin Modulation of Macrophage Polarization: Inflammation and Beyond." In Advances in Experimental Medicine and Biology, 89–115. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07320-0_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Chen, Zhiyong, Aijun Liu, Xiaohu Liang, and Xuan Yi. "Multi-user Directional Modulation Based on Polarization Transmission." In Lecture Notes in Electrical Engineering, 678–85. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6264-4_80.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Grinevych, V. S., L. M. Filevska, V. A. Smyntyna, M. O. Stetsenko, S. P. Rudenko, L. S. Maksimenko, and B. K. Serdega. "Characterization of SnO2 Sensors Nanomaterials by Polarization Modulation Method." In Nanomaterials for Security, 259–66. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7593-9_20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Tang, Yize, Dong He, Ying Jiang, Qiuhan Wu, Tongfei Xia, Kejun Xie, and Zhiyuan Ye. "Research on Polarization Modulated QKD Through Overhead Transmission Lines." In Lecture Notes in Electrical Engineering, 116–24. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6264-4_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Polarization modulator"

1

de Wijn, Alfred G., Steven Tomczyk, Roberto Casini, and Peter G. Nelson. "The polychromatic polarization modulator." In SPIE Astronomical Telescopes + Instrumentation, edited by Ian S. McLean, Suzanne K. Ramsay, and Hideki Takami. SPIE, 2010. http://dx.doi.org/10.1117/12.857745.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Benedetto, S., A. Djupsjobacka, R. Q. Hui, B. Lagerstrom, P. T. Poggiolini, and R. Gaudino. "LiNbO3 modulator for binary and multilevel polarization modulation." In Optical Fiber Communication Conference. Washington, D.C.: OSA, 1994. http://dx.doi.org/10.1364/ofc.1994.fb7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Zarei, S. "Polarization-independent broadband terahertz modulator." In 12th European Quantum Electronics Conference CLEO EUROPE/EQEC. IEEE, 2011. http://dx.doi.org/10.1109/cleoe.2011.5942672.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Polavarapu, P. L. "Achromatic Long Wavelength Polarization Modulator." In 33rd Annual Techincal Symposium, edited by Russell A. Chipman. SPIE, 1990. http://dx.doi.org/10.1117/12.962918.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Monin, Jean, Olivier Brevet-Philibert, Valerie Cabuil, and Lionel Delaunay. "Polarization modulator using ferrofluid material." In 15th Int'l Optics in Complex Sys. Garmisch, FRG, edited by F. Lanzl, H. J. Preuss, and G. Weigelt. SPIE, 1990. http://dx.doi.org/10.1117/12.34878.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Gisler, Daniel, Alex Feller, and Achim M. Gandorfer. "Achromatic liquid crystal polarization modulator." In Astronomical Telescopes and Instrumentation, edited by Silvano Fineschi. SPIE, 2003. http://dx.doi.org/10.1117/12.458835.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Krejny, M., D. T. Chuss, G. Novak, G. M. Voellmer, E. J. Wollack, C. K. Walker, M. Jackson, et al. "The variable-delay polarization modulator." In SPIE Astronomical Telescopes + Instrumentation, edited by Jonas Zmuidzinas, Wayne S. Holland, Stafford Withington, and William D. Duncan. SPIE, 2006. http://dx.doi.org/10.1117/12.671927.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Liu, Xing, and David B. Patterson. "Single-mode fiber polarization modulator." In 10th Optical Fibre Sensors Conference. SPIE, 1994. http://dx.doi.org/10.1117/12.185003.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Nan, Meng, Zhang Xiaochan, Ma Juntao, and Zhang Shaokun. "Polarization Code Shift Keying OCDMA System Using Polarization Modulator." In 2012 Second International Conference on Instrumentation, Measurement, Computer, Communication and Control (IMCCC). IEEE, 2012. http://dx.doi.org/10.1109/imccc.2012.153.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Dennis, Michael L., and Irl N. Duling. "Polarization independent electro-optic intensity modulator." In Integrated Photonics Research. Washington, D.C.: OSA, 2000. http://dx.doi.org/10.1364/ipr.2000.ifg4.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Polarization modulator"

1

Benedetto, S., L. Kazovsky, and P. Poggiolini. Minimum Polarization Modulation: A Highly Bandwidth Efficient Coherent Optical Modulation Scheme. Fort Belvoir, VA: Defense Technical Information Center, January 1991. http://dx.doi.org/10.21236/ada247556.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Stoller, P. Polarization-Modulated Second Harmonic Generation Microscopy in Collagen. Office of Scientific and Technical Information (OSTI), September 2002. http://dx.doi.org/10.2172/15002240.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Barrett, Terence W. Propagation of Polarization Modulated Beams Through a Turbulent Atmosphere. Fort Belvoir, VA: Defense Technical Information Center, November 2014. http://dx.doi.org/10.21236/ada614270.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Choquette, K. D., K. L. Lear, R. P. Jr Schneider, J. J. Figiel, S. P. Kilcoyne, M. Hagerott-Crawford, J. C. Zolper, and R. E. Leibenguth. Polarization characteristics, control, and modulation of vertical-cavity surface emitting lasers. Office of Scientific and Technical Information (OSTI), March 1995. http://dx.doi.org/10.2172/34417.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Polarization modulator' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography