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Relevant bibliographies by topics / Optical Modulation / Dissertations / Theses

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Dissertations / Theses on the topic 'Optical Modulation'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Haris, Muhammad. "Advanced modulation formats for high-bit-rate optical networks." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24811.

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Thesis (Ph.D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Chang, Gee-Kung; Committee Co-Chair: Yu, Jianjun; Committee Member: Altunbasak, Yucel; Committee Member: Ji, Chunayi; Committee Member: Ralph, Stephen; Committee Member: Xu, Jun.

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2

Tsai, Hsin-Yu Sidney. "Absorbance modulation optical lithography." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42253.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 91-94).<br>In this thesis, the concept of absorbance-modulation optical lithography (AMOL) is described, and the feasibility experimentally verified. AMOL is an implementation of nodal lithography, which is not bounded by the diffraction limit of incident lights. Experimental results showed p

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3

davoudzadeh, mahboub sedigh Nima. "optical engineer." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/dissertations/894.

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In this research an approach to all optical delta sigma modulator (ADSM) has been elaborated. Two important components of ADSM; "leaky integrator" and "inverted bi-stable quantizer" were modeled, on the basis of cross gain modulation of the Semiconductor Optical Amplifier (SOA). The simulations (via VPI photonics) were all in micrometer scale (suitable for chip fabrication). By simulating each element of ADSM the whole circuit was simulated and results have been showed and analyzed. By investigating the ADSM, the limiting factor for reaching higher frequencies (THz) was recognized to be the q

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4

Hong, Stanley Seokjong 1977. "Surface acoustic wave optical modulation." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86715.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.<br>Includes bibliographical references (leaves 50-54).<br>by Stanley Seokjong Hong.<br>M.Eng.

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5

Joshi, Harita. "Modulation for optical wireless communications." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/55521/.

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6

Bhatranand, Apichai. "Electrooptic light modulator with improved response linearity using optical feedback." Diss., Texas A&M University, 2004. http://hdl.handle.net/1969.1/2750.

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The use of optical feedback for improving response linearity of electrooptic light modulators has been investigated. The modulator is configured as a straight channel waveguide flanked by electrodes in a lithium niobate (LiNbO3) substrate. Light is coupled into the waveguide in both TE and TM polarizations, and a voltage applied across electrodes causes a relative phase shift between two polarization components. An output analyzer converts the phase modulation to intensity modulation. Optical feedback of light in both polarization modes results from reflection of light at the polished edges of

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7

Wang, Jun. "All-optical microwave filters based on optical phase modulation." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27192.

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In this thesis three different microwave filter architectures based on optical phase modulation are proposed and demonstrated. The first photonic microwave filter consists of an electro-optic phase modulator (EOPM), a length of high birefringence (Hi-Bi) fiber, a 25-km single-mode fiber and a narrow linewidth laser source. In the second and the third photonic microwave filters, we focus on the technique to obtain bipolar coefficients based on phase modulation to intensity modulation (PM-IM) conversion. In the second filter, chirped fiber Bragg gratings (CFBGs) are used as PM-IM conversion devi

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8

Ferreira, Ricardo Xavier da Graça. "Acoustic optical modulation in optical fibre for sensing applications." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11646.

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Mestrado em Engenharia Física<br>O presente trabalho teve como objetivo desenvolver um sensor de fibra óptica intrínseco para viscosidade com base no efeito acústoótico aplicado em redes de Bragg. Foram utilizadas fibras de silica e poliméricas para medições com baseadas no espectro e no tempo de resposta da rede quanto sujeitas ao efeito acústo-ótico. O resultado é um viscosímetro multi-paramétrico com um distinto potencial futuro. Com base no conhecimento adquirido, é proposto um novo design e mecanismo de detecção.<br>The present work aimed to develop an intrinsic optical fibre senso

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9

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

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10

Yekani, Khoei Aminreza. "Advanced modulation for optical communication systems." Doctoral thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/33709.

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La demande toujours croissante pour la capacité du réseau conduit au développement de systèmes de communication optique pour couvrir les normes Terabit Ethernet récemment proposées. Les applications de courte distance nécessitent une solution peu coûteuse et peu complexe avec détection directe. Cependant, le coût de la détection cohérente diminue chaque jour et en fait un bon candidat pour les applications à courte distance futures afin d'accroître l'efficacité spectrale et d'utiliser des formats de modulation avancés. Dans cette thèse, nous étudions des solutions pour les applications court-c

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11

Dionísio, Rogério Pais. "Advanced optical modulation and format conversion." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/12850.

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Doutoramento em Engenharia Electrotécnica<br>Over the years, the increased search and exchange of information lead to an increase of traffic intensity in todays optical communication networks. Coherent communications, using the amplitude and phase of the signal, reappears as one of the transmission techniques to increase the spectral efficiency and throughput of optical channels. In this context, this work present a study on format conversion of modulated signals using MZI-SOAs, based exclusively on all- optical techniques through wavelength conversion. This approach, when applied in in

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12

Srinivas, K. T. "Axial strain effects on optical fiber mode patterns." Thesis, This resource online, 1987. http://scholar.lib.vt.edu/theses/available/etd-04122010-083554/.

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13

Buyuksahin, Oncel F. Feza. "Modulation Formats For Wavelength Division Multiplexing (wdm) Systems." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611039/index.pdf.

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Optical communication networks are becoming the backbone of both national and international telecommunication networks. With the progress of optical communication systems, and the constraints brought by WDM transmissions and increased bit rates, new ways to convert the binary data signal on the optical carrier have been proposed. There are different factors that should be considered for the right choice of modulation format, such as information spectral density (ISD), power margin, and tolerance against group-velocity dispersion (GVD) and against fiber nonlinear effects like self-phase modul

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14

Luo, Haitao. "Snapshot Imaging Polarimeters Using Spatial Modulation." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/193905.

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The recent demonstration of a novel snapshot imaging polarimeter using the fringe modulation technique shows a promise in building a compact and moving-parts-free device. As just demonstrated in principle, this technique has not been adequately studied. In the effort of advancing this technique, we build a complete theory framework that can address the key issues regarding the polarization aberrations caused by using the functional elements. With this model, we can have the necessary knowledge in designing, analyzing and optimizing the systems. Also, we propose a broader technique that uses ar

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15

An, Dechang. "Electro-optic polymer-based monolithic waveguide devices with multi-functions of amplification switching and modulation." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3035933.

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16

Alahmari, Abdallah Said. "Turbo coded pulse position modulation for optical communications." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/15388.

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17

Andrikogiannopoulos, Nikolas I. "RF phase modulation of optical signals and optical/electrical signal processing." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/42930.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 125-127).<br>Analog RF phase modulation of optical signals has been a topic of interest for many years, mainly focusing on Intensity Modulation Direct Detection (IMDD). The virtues of coherent detection combined with the advantages of Frequency Modulation, however, have not been explored thor

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18

Thorn, Andrew Peter. "Electro-optical modulation in III-V semiconductors." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46578.

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19

Jones, David Rhys. "Forward Error Correction in Memoryless Optical Modulation." UNF Digital Commons, 2011. http://digitalcommons.unf.edu/etd/171.

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The unprecedented growth in demand for digital media has led to an all-time high in society’s demand for information. This demand will in all likelihood continue to grow as technology such as 3D television service, on-demand video and peer-to-peer networking continue to become more common place. The large amount of information required is currently transmitted optically using a wavelength division multiplexing (WDM) network structure. The need to increase the capacity of the existing WDM network infrastructure efficiently is essential to continue to provide new high bandwidth services to end-u

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20

Lopes, Ana Patrícia da Silva. "Advanced modulation formats for optical access networks." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11680.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Nos últimos anos, as comunicações ópticas têm-se revelado a solução para a crescente procura de elevados ritmos de informação. De facto, nenhuma outra tecnologia (com ou sem fios) permite transmissões a Tbps, ou até dezenas de Tbps, como as comunicações ópticas permitem. Contudo, as actuais redes ópticas passivas não exibem uma capacidade agregada de fibra superior a 10 Gbps e os operadores esperam mais delas. Assim, uma evolução destas redes a médio prazo, a NG-PON2, tem sido discutida, sendo 40 e 10 Gbps as velocidades de downloa

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21

Harrison, James Ashley. "All-optical processing using cross-phase modulation." Thesis, Aston University, 2005. http://publications.aston.ac.uk/8020/.

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The following thesis presents results obtained from both numerical simulation and laboratory experimentation (both of which were carried out by the author). When data is propagated along an optical transmission line some timing irregularities can occur such as timing jitter and phase wander. Traditionally these timing problems would have been corrected by converting the optical signal into the electrical domain and then compensating for the timing irregularity before converting the signal back into the optical domain. However, this thesis posses a potential solution to the problem by remaining

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22

Zong, Jie. "Conversion efficiency improvement in acousto-optical modulation." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/298755.

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A high conversion efficiency in acousto-optical (AO) modulation can be obtained through careful design of an acousto-optic modulator (AOM), as well as careful selection of the following: the AO crystal material, the orientation in the AO crystal with respect to direction of propagation of the acoustic wave, the piezoelectric transducer material, the orientation of the transducer material, and the AOM fabrication method. A class of AOM's has been introduced wherein the diffraction efficiency of the AOM is improved by augmenting the design of the AOM so as to produce two or more passes of the op

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23

Dumenil, Arnaud. "Polarization dependent loss in next-generation optical networks : challenges and solutions." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAS006.

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La demande de débit en augmentation constante requiert des canaux de communication fiables et robustes. Les réseaux optiques terrestres ainsi que les liens sous-marins représentent le cœur de l'infrastructure des télécommunications au niveau mondial, et transportent des centaines de canaux fréquentiels modulés à haut débit. Ces liens se composent non seulement de kilomètres de fibre mais aussi de composants optiques comme les amplificateurs à fibre dopée à l'erbium (EDFA) pour relever régulièrement la puissance des signaux atténués, ou encore des commutateurs sélectifs en longueur d'onde (WSS)

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24

Ireeta, Winston Tumps. "Aerial optical fibres in telecommunication systems : SOP and PMD monitoring, and tolerance of modulation formats." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1478.

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The topic of this thesis is aerial optical fibres in telecommunication systems: state of polarization (SOP) and polarization mode dispersion (PMD) monitoring and tolerance of modulation formats. Errors in optical fibre telecommunication systems are introduced when these polarization effects (SOP and PMD) change. These changes are so intense especially in aerial optical fibres. Part of the backbone of South Africa’s national grid includes long distances of aerial optical fibre between transmission exchange stations. The work in this thesis can be divided into three parts which all deal with the

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25

Wongpaibool, Virach. "Improvement of Fiber Optic System Performance by Synchronous Phase Modulation and Filtering at the Transmitter." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/26111.

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In this dissertation the performance of a novel variant of a return-to-zero (RZ) modulation format, based on square-wave phase modulation and filtering of a continuous-wave (CW) signal, is investigated and compared with various modulation formats considered in the literature. We call this modulation format continuous-wave square-wave (CWSW). With CWSW an RZ pulse train is generated by phase modulating the CW signal by a periodic square-wave phase function having an amplitude of and frequency of half the bit rate, and then filtering the signal. The filter performs phase-to-amplitude conversio

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26

Grelaud, Guillaume. "New electrochromic organometallic materials for light modulation." Phd thesis, Rennes 1, 2012. http://www.theses.fr/2012REN1S120.

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Au cours de cette thèse, de nouveaux complexes alcynyles du fer et du ruthénium ont été synthétisés et caractérisés. Ces composés ont été élaborés pour permettre l'électro-commutation de leurs propriétés en optique non linéaire (ONL) entre plusieurs états redox. Dans un premier temps, des unités hétéro-bimétalliques ferrocène-ruthénium ont été étudiées. Il a pu être démontré que ces unités, qui sont des complexes à valence mixte de classe II dans leur état mono-cationique, possèdent les propriétés électrochromiques requises pour leur incorporation dans des assemblages conjugués plus étendus et

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27

HOLM, DAVID ALLEN. "QUANTUM THEORY OF MULTIWAVE MIXING (RESONANCE FLUORESCENCE, SATURATION SPECTROSCOPY, MODULATION, PHASE CONJUGATION, QUANTUM NOISE)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187980.

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This dissertation formulates and applies a theory describing how one or two strong classical waves and one or two weak quantum mechanical waves interact in a two-level medium. The theory unifies many topics in quantum optics, such as resonance fluorescence, saturation spectroscopy, modulation spectroscopy, the build up of laser and optical bistability instabilities, and phase conjugation. The theory is based on a quantum population pulsation approach that resembles the semiclassical theories, but is substantially more detailed. Calculations are performed to include the effects of inhomogeneous

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28

Pérez, Galacho Diego. "High speed optical modulation, advanced modulation formats and mode division multiplexing in Silicon photonics." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS194/document.

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La demande en bande passante des systèmes de communication optique ne cesse de croitre. Des débits de données de l’ordre de plusieurs centaines de TBit/s sont attendus dans un futur proche. La photonique silicium est une technologie majeure pour faire face à ces besoins croissants. Sa compatibilité avec les technologies CMOS permet naturellement une co-intégration photonique/électronique sur les mêmes circuits. A court terme, l’augmentation des débits de données dans les générations futures de système de communication optique passe par l’utilisation de formats de modulation avancés, et l’augme

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Fang, Yi-chin. "Performance evaluation of discrete IR optical system." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270211.

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Cryan, Robert Anthony. "High sensitivity optical digital pulse position modulation systems." Thesis, University of Huddersfield, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306086.

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Digital pulse position modulation (PPM) is a transmission format that can be used to exchange excess channel bandwidth for improved receiver sensitivity. This thesis is concerned with the performance of digital PPM for use in optical fibre systems such that increased single-span transmission distances can be achieved. It includes a literature survey and a thorough theoretical investigation into uncoded directly detected and coherently detected digital PPM, along with an evaluation of forward error correction coded PPM. Original contributions are described for digital PPM systems employing PIN-

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31

Grennek, David S. "Amplitude modulation using a nonlinear optical loop mirror." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA358980.

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Thesis (M.S. in Applied Physics) Naval Postgraduate School, December 1998.<br>"December 1998." Thesis advisor(s): Andres Larraza, H. Sarma Lakkaraju. Includes bibliographical references (p. 41). Also available online.

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32

Zeng, Yu. "Adaptive modulation schemes for optical wireless communication systems." Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/3837/.

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High-speed wireless optical communication links have become more popular for personal mobile applications. This is a consequence of the increasing demand from the personal information service boom. Compared to the radio frequency domain, optical wireless communication offers much higher speeds and bit rates per unit power consumption. As stated by the official infrared standard IrDA optical communication enjoys much lower power consumption than Bluetooth, with an inherent security feature while in Line of Sight (LOS) applications. There are also drawbacks such as the infrared radiation cannot

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33

Kaluarachchi, Eraj Dulip. "Digital pulse interval modulation for optical communication systems." Thesis, Sheffield Hallam University, 1997. http://shura.shu.ac.uk/9101/.

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Pulse time modulation (PTM) techniques have drawn considerable attention over the years as suitable schemes for transmission of information over optical fibres. PTM schemes are known to utilise the vast optical bandwidth to provide efficient transmission characteristics. Pulse code modulation is one such modulation scheme that has been used widely in various communication systems. In this thesis digital pulse interval modulation (DPIM), a form of PTM, is proposed as a suitable modulation scheme for optical communication systems. In this scheme the information is represented by means of varying

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34

Menon, Mahesh. "Analysis of modulation formats for optical wireless systems." Thesis, Northumbria University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434760.

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35

Calvert, N. "An optical fibre digital pulse position modulation system." Thesis, University of Huddersfield, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382254.

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36

Jones, Liam. "Synthesis and regeneration of advanced optical modulation formats." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/419063/.

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This thesis explores all-optical regeneration techniques for advanced modulation formats with the overall aim of increasing the transmission reach of optical data links. In order to carry out this work, a number of tools were developed for the generation of advanced optical modulation formats. They included a combination of techniques involving the use of a delay line interferometer (DLI), time gating and coherent temporal superposition. A BPSK seed signal was used to generate QPSK (with a single DLI) and 16-QAM (with two concatenated DLIs) signals. The all-optical regeneration schemes studied

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37

Liu, Tao. "Advanced Coded Modulation for High Speed Optical Transmission." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/613291.

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In the recent years, the exponential Internet traffic growth projections place enormous transmission rate demand on the underlying information infrastructure at every level, from the long haul submarine transmission to optical metro networks. In recent years, optical transmission at 100 Gb/s Ethernet date rate has been standardized by ITU-T and IEEE forums and 400Gb/s and 1Tb/s rates per DWDM channel systems has been under intensive investigation which are expected to be standardized within next couple of years.To facilitate the implementation of 400GbE and 1TbE technologies, the new advanced

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Batshon, Hussam George. "Coded Modulation for High Speed Optical Transport Networks." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194075.

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At a time where almost 1.75 billion people around the world use the Internet on a regular basis, optical communication over optical fibers that is used in long distance and high demand applications has to be capable of providing higher communication speed and re-liability. In recent years, strong demand is driving the dense wavelength division multip-lexing network upgrade from 10 Gb/s per channel to more spectrally-efficient 40 Gb/s or 100 Gb/s per wavelength channel, and beyond. The 100 Gb/s Ethernet is currently under standardization, and in a couple of years 1 Tb/s Ethernet is going to be

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LI, RIXIN. "mixed modulation format for future optical transmission systems." Doctoral thesis, Politecnico di Torino, 2016. http://hdl.handle.net/11583/2641453.

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Developing a flexible network to fully utilize the existing spectral resource is a hot topic in the novel paradigm of optical transmission systems. In this thesis, I analysed hybrid modulation formats as an effective technique for the implementation of flexible transponders that are capable of trading-off the delivered data rate by the light path quality of transmission with a finer granularity. The flexible transponder is an enabling technology to introduce the elastic paradigm in the state-of-the-art networks, while maintaining compatibility with the installed equipment, including fibers, mu

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Jaiswal, Anshul. "Design and performance evaluation of FSO system with OSSK modulation scheme." Thesis, IIT Delhi, 2019. http://eprint.iitd.ac.in:80//handle/2074/8111.

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41

Debnath, Kapil. "Photonic crystal cavity based architecture for optical interconnects." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3870.

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Today's information and communication industry is confronted with a serious bottleneck due to the prohibitive energy consumption and limited transmission bandwidth of electrical interconnects. Silicon photonics offers an alternative by transferring data optically and thereby eliminating the restriction of electrical interconnects over distance and bandwidth. Due to the inherent advantage of using the same material as that used for the electronic circuitry, silicon photonics also promises high volume and low cost production plus the possibility of integration with electronics. In this thesis, I

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42

Ladner, Michael Christopher. "Optical modulator LM 0202 P characteristics : application to amplitude modulation of argon-ion laser." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA313485.

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43

Hosseini, Seyedreza, and Kambiz Jamshidi. "Modulation efficiency enhancement of an optical phase modulator using one dimensional photonic crystal structures." SPIE, 2015. https://tud.qucosa.de/id/qucosa%3A35320.

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Slow light effect based rib silicon waveguide structures are studied in this paper to enhance modulation efficiency of an optoelectronic carrier plasma dispersion effect based phase modulator. Center frequency to achieve desired slow down factor and band width limitations of the structures are investigated through finite element method simulations. Optical modulation efficiency is modeled and the effects of doping, bias voltage and slow light on its performance are studied.

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Zhao, Lu. "Optical transmission of wideband video signals using SWFM." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317775.

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Detwiler, Thomas Frederick. "Continuous phase modulation for high speed fiber-optic links." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42867.

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Fiber-optic networks are continually evolving to accommodate the ever increasing data rates demanded by modern applications and devices. The current state-of-the art systems are being deployed with 100 Gb/s rates per wavelength while maintaining the 50 GHz channel spacing established for 10 Gb/s dense wavelength division multiplexed (DWDM) systems. Phase modulation formats (in particular quadrature phase shift keying - QPSK) are necessary to meet the spectral efficiency (SE) requirements of the application. The main challenge for phase modulated optical systems is fiber nonlinearities, where c

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46

Kamdar, Ketan Dilip. "Terfenol based optical phase modulator and magnetometer." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06302009-040256/.

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Tsonev, Dobroslav Antonov. "High speed energy efficient incoherent optical wireless communications." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/10571.

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The growing demand for wireless communication capacity and the overutilisation of the conventional radio frequency (RF) spectrum have inspired research into using alternative spectrum regions for communication. Using optical wireless communications (OWC), for example, offers significant advantages over RF communication in terms of higher bandwidth, lower implementation costs and energy savings. In OWC systems, the information signal has to be real and non-negative. Therefore, modifications to the conventional communication algorithms are required. Multicarrier modulation schemes like orthogona

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48

Li, Jun. "Ultrasound-modulated optical tomography for biomedical applications." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1274.

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I experimentally studied ultrasound-modulated optical tomography, which holds the promise for biomedical diagnosis. I measured the degree of polarization of laser speckles generated by scattered light transmitted through turbid media, investigated three signal-detection schemes for extracting the intensity of the ultrasound-modulated light, carried out experiments to image thick biological-tissue samples, and studied two techniques providing resolution in the cross-sections containing the ultrasonic axis. The study of degree of polarization presented results important for the understanding o

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Kim, Dong Kwon. "Optical properties of asymmetric double quantum wells and optimization for optical modulators." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22649.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Citrin, David; Committee Member: Dupuis, Russell; Committee Member: Gaylord, Thomas; Committee Member: Rhodes, William; Committee Member: Zhang, Zhuomin.

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Elayoubi, Karim. "Study of communications channels for optical links through the atmosphere." Thesis, Toulouse, ISAE, 2019. http://www.theses.fr/2019ESAE0016/document.

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Les télécommunications optiques en espace libre pour les applications satellites deviennent unealternative aux communications radiofréquences pour les liens feeder (segment Satellite-Gateway) quicommencent à présenter une saturation en termes de bande passante avec une faible capacité desliaisons. Ces liaisons optiques présentent des avantages majeurs notamment une large bande passantedisponible, l’insensibilité aux interférences ou encore l’absence de régulation (pas de coût lié àl’utilisation de telle ou telle bande de longueur d’onde a contrario de la RF). Elles sont envisagées pourles futu

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