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Dissertations / Theses on the topic 'Optical device'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Leon-Saval, Sergio G. "Optical fibre transitions for device applications." Thesis, University of Bath, 2005. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425651.

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2

Weiss, Bernard L. "Integrated optical and semiconductor device technology." Thesis, University of Newcastle upon Tyne, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424080.

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3

Bostock, R. M. "Silicon micromachining for micro-optical device manufacture." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596797.

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All current laser pig-tailing methods employ either glue or a weld to secure the fibre in place. This leads to difficulty in attaining initial alignment; to movement during bonding and to instability throughout the service life. Precautions are also required to avoid device damage due to glue wicking. The approach taken in the present research is to adopt a mechanical solution, eliminating the use of either glue or a weld. In addition, this must be integrated in one part with rest of the optical system to form a compatible solution. A novel solution is developed using silicon nitride clips whi

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4

Carey, Mark William. "Dynamic analysis of an optical MEMS device." Thesis, University of Canterbury. Mechanical Engineering, 2003. http://hdl.handle.net/10092/6603.

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This thesis formulates, implements and validates an integrated framework for analysing Micro-Electro-Mechanical-Systems (MEMS) devices including non-linear electrostatic loading, large deflections, structural contact and dynamic behaviours. Utilizing the framework developed enables the simulation of electrostaticallly actuated thin film bifurcating MEMS devices, with specific application to Eastman Kodak's conformal Grating Electro Mechanical System (GEMS) device. The resulting tool provides insight into the dynamic operation of MEMS devices allowing an assessment of the impact of variations i

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5

Hughes, Mark A. "Modified chalcogenide glasses for optical device applications." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/47761/.

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This thesis focuses on two different, but complementary, aspects of the modification of gallium lanthanum sulphide (GLS) glasses. Firstly the addition of transition metal ions as dopants is examined and their potential for use as active optical materials is explored. It is also argued that the spectroscopic analysis of transition metal ions is a useful tool for evaluating the local environment of their host. Secondly femtosecond (fs) laser modification of GLS is investigated as a method for waveguide formation. Through optical characterisation of fs laser written waveguides in GLS, a formation

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6

de, Barros Correia Kyotoku Bernardo. "Applications of optical coherence tomography and advances into a photonic integrated device." Universidade Federal de Pernambuco, 2011. https://repositorio.ufpe.br/handle/123456789/6125.

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Made available in DSpace on 2014-06-12T18:02:18Z (GMT). No. of bitstreams: 2 arquivo5666_1.pdf: 7107729 bytes, checksum: 331daa72875ae82bd7eecdcd35436b14 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2011<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Tomografia por coerência óptica (OCT) é uma técnica de imageamento não invasiva que usa radiação infravermelho para sondar alguns milímetros the profundidade de um alvo com um resolução de poucos micrômetros. Aqui, nós expomos a base teórica para entender a técnica. O

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7

Vogel, Robert. "Dye doped mesostructured materials for optical device applications /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17360.pdf.

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8

Ringaby, Erik. "Optical Flow Computation on Compute Unified Device Architecture." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15426.

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<p>There has been a rapid progress of the graphics processor the last years, much because of the demands from computer games on speed and image quality. Because of the graphics processor’s special architecture it is much faster at solving parallel problems than the normal processor. Due to its increasing programmability it is possible to use it for other tasks than it was originally designed for.</p><p>Even though graphics processors have been programmable for some time, it has been quite difficult to learn how to use them. CUDA enables the programmer to use C-code, with a few extensions, to p

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9

Fox, Natasha. "Optical characterisation of novel mid-infrared device structures." Thesis, University of Surrey, 2011. http://epubs.surrey.ac.uk/843108/.

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Optical techniques are used to characterise materials designed to emit and/or detect in the infrared. Two tri-metal InGaAlAs quantum well (QW) laser structure samples giown on InP are compared at room temperature to a conventional benchmark InGaAsP QW structure also grown on InP. The spectroscopic methods used to characterise the samples include photo-modulated reflectance (PR), electro-modulated reflectance (ER) and surface photo voltage spectroscopy (SPS). The positions of the QW transitions are compared with a theoretical model of a QW to find the conduction band offset. The InGaAlAs materi

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10

Green, M. R. "Investigation of a semiconductor waveguide optical routing device." Thesis, University of Bath, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336237.

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11

Sudeora, Sanjay. "Rare earth-based active optical fiber device development." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/42239.

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This work concentrates on the study, analysis, and development of rare-earth-based optical fiber active devices. The properties of the neodymium ion are analyzed and related to its potential role in the operation of various active optical devices. Existing technology in rare-earth-based fiber amplifiers is reviewed. Novel techniques for the fabrication of rare-earth-based glass rods and fibers are presented. Further, a discussion of results and ideas for the point sensing of temperature, and the simultaneous sensing of temperature and strain using optical time-domain reflectometry techniques w

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12

Johnson, Nigel Christopher. "All-optical regenerative memory using a single device." Thesis, Aston University, 2009. http://publications.aston.ac.uk/15331/.

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In recent years the optical domain has been traditionally reserved for node-to-node transmission with the processing and switching achieved entirely in the electrical domain. However, with the constantly increasing demand for bandwidth and the resultant increase in transmission speeds, there is a very real fear that current electronic technology as used for processing will not be able to cope with future demands. Fuelled by this requirement for faster processing speeds, considerable research is currently being carried out into the potential of All-optical processing. One of the fundamental obs

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13

Liu, Tao. "Photonic Crystal Based Optical Devices." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1294%5F1%5Fm.pdf&type=application/pdf.

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14

Raghavan, V. P. "High precision laser radar tracking device /." Online version of thesis, 1991. http://hdl.handle.net/1850/11453.

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15

Wang, Dongxue Michael. "Optoelectronic device simulation optical modeling for semiconductor optical amplifiers and solid state lighting /." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-03292006-132611/.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2006.<br>Buck, John, Committee Co-Chair ; Ferguson, Ian, Committee Chair ; Krishnamurthy,Vikram, Committee Member ; Chang, Gee-Kung, Committee Member ; Callen, W. Russell Jr., Committee Member ; Summers, Christopher, Committee Member.

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16

Binder, R., S. M. H. Luk, N. H. Kwong, et al. "Optical control of polaritons: from optoelectronic to spinoptronic device concepts." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/626497.

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Exciton-polaritons in semiconductor microcavities have been studied intensely, both with respect to their intriguing fundamental physical properties and with respect to their potential in novel device designs. The latter requires ways to control polaritonic systems, and all-optical control mechanisms are considered to be especially useful. In this talk, we discuss and review our efforts to control the polariton density, utilizing optical four-wave mixing instabilites, and the spin or polarization textures resulting from the optical spin Hall effect. Both effects are readily observable in the c

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17

Jaques, Stuart Roland. "A TLM analysis of an all-optical switching device." Thesis, University of Hull, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363266.

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18

Eggleston, James Michael. "Optical spectroscopy of thin film semiconductor structures." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4769/.

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This thesis consists of a study of several thin film semiconductor structures of practical technological use either presently or in the near future. The first system studied is an ultra thin film single crystal gallium arsenide layer. The absorption spectra of these layers are measured and transitions at both the F- point and L-point of the Brillouin Zone are observed, the latter are not normally measurable in thicker layers. The observed shift in the F-point absorption edge is attributed to contributions from the Franz-Keldysh Effect and the Moss-Burstein Effect. The temperature dependence of

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19

Kaplan, David Louis. "Characterizing chaos in a hybrid optically bistable device." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184440.

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Turbulence and periodic oscillations are easily seen with an optically bistable device with a delay in the feedback. The device is a hybrid, having both optical and electronic components. The details of the time-dependent output are investigated. In particular, as the input intensity is increased, the device output goes through a series of second-order nonequilibrium phase transitions or bifurcations. A truncated period-doubling sequence is observed prior to the onset of turbulence or chaos. The truncation is shown to be due to a noise-induced bifurcation gap. Within the chaotic regime, the de

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20

Loh, S. F. "The use of image derotation techniques and liquid crystal thermography to visualise the temperature patters of warm stationary and rotating components." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371959.

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21

Hamid, Sohail. "Fibre linked miniature laser transit anemometer for complex flow fields." Thesis, Cranfield University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.352950.

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22

Li, Yunchu. "Silicon Micro-ring Resonator Device Design for Optical Interconnect Systems." Thesis, University of Southern California, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3563933.

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<p> Optical interconnect systems is one of the most promising solutions to surpass the speed bottleneck of CPU from the electrical interconnects. To realize this idea, one of the key topics is to design compact photonic devices suitable for building the optical interconnects. </p><p> The use of silicon microring resonators is an attractive technology for the integrated photonics pursuing optical interconnect applications, highly exciting due to the high integration density, low power consumption, and versatile functionalities. The platform technologies available for silicon microring resona

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23

Juodawlkis, Paul W. "Low-temperature-grown InGaAs quantum wells for optical device applications." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/13752.

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24

Otazo, Marcos R. (Marcos Rafael). "Packaging of two dimensional optoelectronic device arrays for optical backplanes." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23372.

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The use of existing packaging techniques for microelectronics are studied in terms of their applicability to the packaging of optoelectronic device arrays for photonic inter-connect applications. In particular, the packaging of smart pixel arrays for free-space optical backplanes is quantitatively explored. This assessment is made from three basic perspectives: thermal management capabilities, connectivity and bandwidth, and alignment to a free-space optical system. In the assessment, a smart pixel array design space analysis is derived which shows that, by constraining the smart pixel array c

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25

Chen, Lawrence R. "Ultrashort optical pulse interaction with fibre gratings and device applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29402.pdf.

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26

Desmulliez, Marc P. Y. "Self-electro-optic-effect-device response analysis for optical computing." Thesis, Heriot-Watt University, 1995. http://hdl.handle.net/10399/767.

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27

SILVA, ROMANO JOSE MAGACHO DA. "INTEGRATING AN OPTICAL TRACKING DEVICE WITH A VIRTUAL REALITY TOOLKIT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5406@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Os sistemas de realidade virtual requerem dispositivos de interação que não obstruam o caráter imersivo da aplicação. Com a difusão das câmeras digitais, a captura óptica do movimento do usuário se firmou como uma nova área de pesquisa. Este trabalho apresenta a integração de um dispositivo óptico para interação em uma ferramenta de desenvolvimento de aplicações em realidade virtual. O dispositivo óptico proposto é composto por uma esfera revestida de material retroreflexivo rastreada por quatro câmeras com sensores infravermelhos.

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28

Kyle, David John. "Erbium and hydrogen implantation into glass for optical device applications." Thesis, University of Surrey, 1996. http://epubs.surrey.ac.uk/843641/.

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A material which exhibits a refractive index change on exposure to ultra violet light is obtained when germania doped silica is heated in a hydrogen atmosphere. This phenomena is called photosensitivity. Bragg gratings, which are useful for the fabrication of feedback mirrors in optical amplifiers and as optical filters, can be readily fabricated by exposing a photosensitive waveguide to an ultraviolet interference pattern. Ion implantation, which allows localised substrate doping, is a useful means of introducing hydrogen when compared to thermal annealing. In this thesis, it is demonstrated

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29

Hui, Jeremy R. (Jeremy Ryan) 1977. "Optical tweezers using the Texas Instruments' Digital Micromirror Device(tm)." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86699.

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Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.<br>Includes bibliographical references.<br>by Jeremy R. Hui.<br>M.Eng.and S.B.

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30

Lee, Do-Joon 1965. "A study on the standards in optical storage device industry." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9220.

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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2000.<br>Also available online at the DSpace at MIT website.<br>Includes bibliographical references (leaves 51-53).<br>Standards have been a very important issue in many industries as the innovators of the standard technology have tremendous power in the industry. The standard holders are supposed to have the dominant market position and technology leadership for further generation of the product as well as direct royalty income from the intellectual property. However, othe

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31

Masnadi, Shirazi Nejad Mostafa. "Optical and electronic properties of GaAsBi alloys for device applications." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54559.

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GaAs1-xBix is a new III-V semiconductor alloy that shows promise for many optoelectronic applications. In this thesis, several characterization techniques were used to explore the properties of molecular beam epitaxy grown GaAs1-xBix alloys in a wide range of Bi-content. The fundamental bandgap and the optical absorption coefficient of pseudomorphic GaAs1-xBix/GaAs films are studied by optical transmission and photoluminescence spectroscopies. All GaAs1-xBix films (0≤x≤17.8%) show direct optical bandgaps. The bandgap (Eg) decreases strongly with increasing Bi-content, reaching 0.52 eV (~2.4 µ

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32

Young, James. "Spatial and temporal characteristics of optical bistability in indium antimonide." Thesis, Heriot-Watt University, 1987. http://hdl.handle.net/10399/1019.

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33

DiMatteo, Joseph Howard 1959. "Focus servo performance optimization for an optical disk data storage device." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276866.

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This thesis concerns a study of the application, and performance optimization, of standard lead-lag compensation techniques to improve the closed loop performance of a focus servo system for an optical data storage device. Only with proper application of these compensation techniques will it be possible to meet the sub-micrometer focus error tolerances while maintaining the stability of the closed loop system. The performance indices used in this optimization study are the Integral of the Squared Error (ISE), the Integral of the Absolute Error (IAE), and the Integral of the Time multiplied by

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34

DERSTINE, MATTHEW WILLIAM. "OBSERVATION OF CHAOS IN A HYBRID OPTICAL BISTABLE DEVICE (PERIOD-DOUBLING)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187930.

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An analog of an optically bistable device made constructed from both optical and electronic components is used to study chaos. This hybrid optically bistable system has a delay in the feedback so that the response time of the electronics is much faster than the feedback time. Such a system is unstable and shows pulsations and chaos. The character of the pulsations change as the gain of the amplifier or the input laser power is increased. These changes make up the period doubling route to chaos. Not all of the waveforms of an ideal period doubling sequence are observed. This truncation of the p

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35

Levell, Jack William. "Material and device design for organic optoelectronics." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2066.

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This thesis describes investigations into the photophysical properties of luminescent materials and their application in optoelectronic devices such as light emitting diodes and photodetectors. The materials used were all solution processable because of the interest in low cost processing of organics. I have investigated the photophysics of 1,4,5,8,9,12-hexamethyltriphenylene, a triphenylene derivative which has its luminescence enhanced by the addition of methyl groups. These groups change the planar shape of the triphenylene molecule into a twisted one, changing the symmetry of the molecule

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36

Vargas, German R. "Silicon Photonic Device for Wavelength Sensing and Monitoring." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/734.

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Over the last decade advances and innovations from Silicon Photonics technology were observed in the telecommunications and computing industries. This technology which employs Silicon as an optical medium, relies on current CMOS micro-electronics fabrication processes to enable medium scale integration of many nano-photonic devices to produce photonic integrated circuitry. However, other fields of research such as optical sensor processing can benefit from silicon photonics technology, specially in sensors where the physical measurement is wavelength encoded. In this research work, we present

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37

Zhang, Jiazhen. "Optical characterization and device application of the semiconductors ZnSe and ZnS." Thesis, University of St Andrews, 1991. http://hdl.handle.net/10023/14160.

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We have presented evidence that the blue emission band, which is dominant at room temperature in ZnSe made under a wide variety of conditions, arises from a transition between a free hole and an electron bound to a donor, but not all donors contribute. There is a cutoff energy within the spread of donor levels above which there is negligible contribution to the emission. It is suggested that the cutoff corresponds to a localization edge of the same nature as the mobility edge. The line shape calculation based on a simple model agrees well with the experimental data. The origin of the blue emis

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38

Chi, Robert Chih-Jen. "Optical Memory Device Structure Using Vertical Interference From Digital Thin Films." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin988039043.

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39

Almhmadi, Raed Ali M. "Optical True Time Delay Device for mm-Wave Antenna Array Beamforming." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1566073503380698.

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40

Badmaarag, Ulzii-Orshikh. "Optical Chemical Sensing Device for In-situ Non-Invasive Gas Monitoring." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583155117533193.

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41

Beggs, Bruce Cameron. "Optical charge injection into a gallium arsenide acoustic charge transport device." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26681.

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There is a need for monolithic devices capable of spatial resolution in imaging and ionizing radiation detection. In this thesis, a GaAs acoustic charge transport device (ACT) was studied for this purpose. A new method of charge injection has been demonstrated for the ACT. Using near-infrared optical pulses incident through thin semi-transparent chromium windows, electron-hole-pairs were separated by the electric field in a depleted n-type channel region of the device. For light penetration less than the depth of the electron potential minimum, and for small injection levels, calculations indi

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42

Yahioglu, Fulya. "The development of a fluoroimmunoassay for theophylline using the fluorescence capillary fill device (FCFD)." Thesis, University of Bath, 1995. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307135.

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43

Liang, Chao-Wen. "Phase Shifting Grating-Slit Test Utilizing A Digital Micromirror Device With an Optical Surface Reconstruction Algorithm." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/193833.

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A novel optical surface testing method termed the grating-slit test is demonstrated to provide quantitative measurements and a large dynamic measurement range. Although it uses a grating and a slit, as in the traditional Ronchi test, the grating-slit test is different in that the grating is used as the object and the slit is located at the observation plane. This is an arrangement that appears not to have been previously discussed in the optical testing literature. The grating-slit test produces fringes in accordance with the transverse ray aberrations of an aberrated wavefront. By using a spa

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康皓維. "Device and Optical Engineering for Efficient Vacuum-Deposited Organic Optoelectronic Devices." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/tu9u78.

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碩士<br>國立清華大學<br>材料科學工程學系<br>102<br>In this thesis, I focus on the optical properties and device engineering of vacuum-deposited organic optoelectronics. In the first part, I briefly review the development of organic solar cells (OSCs), followed by working mechanisms, device structures of OSCs, material analyses, device deposition methods and measurements of OSCs. In the second part of thesis, 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) and 3,4,9,10-perylenetetracarboxylic-bisbenzimidazole (PTCBI) were used to replace 2,9-dimethyl-4,7-di(phenyl)-1,10-phenanthroline (BCP) as o

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鄭淑娟. "Microfluidic Heating Device in Optical Tweezers System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/66613815847058004900.

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46

Chang, Chia-Pin, and 張家賓. "Fabrication of polymer based integrated optical device." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/25947750497006751966.

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碩士<br>中華大學<br>電機工程學系碩士班<br>92<br>In this paper, SU-8 Y-branch waveguide and photonic crystal were designed and fabricated. SU-8 Y-branch waveguide and photonic crystal were designed Beam propagation method and expected optimum parameters of the structure . The fabrication process of SU-8 Y-branch waveguide and photonic crystal is to deposit the silica film on the silicon wafer and then spin on the porous silica thin film. The last process is to spin on SU-8 material above the porous silica to fabricate Y-branch waveguide and photonic crystal. Their patterns of photolithography are different. T

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CHEN, YI-JUI, and 陳奕睿. "Water-cooling for Optical Splice Boxe Device." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/b283b6.

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碩士<br>國立高雄科技大學<br>電子工程系<br>107<br>With the popularization of broadband networks, the demand for the Internet is increasing. The telecom operators are providing consumers with higher speeds. In recent years, the transmission equipment originally used in the equipment room has been moved to telecommunications. In the transfer box, the transmission distance is shortened, and the attenuation of the signal is reduced, so that the user can apply for a faster rate. The transmission equipment placed in the box is prone to failure due to long-term exposure to the sun, and the failure rate is much highe

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Chen, Chin-Tang, and 陳錦堂. "Optical Modeling and Analysis of Centering Device." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/38100641074259080292.

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碩士<br>國立成功大學<br>機械工程學系碩博士班<br>93<br>Precise measurement of optical unit have led to many technical advances, including making optical mechanism smaller and image quality fine and smooth. Even the recent nanotechnology was related to precise measurement of optical unit. The purpose of this paper is using a skew ray tracing method to modeling and analysis of centering device. 　　This method is derived from 4×4 homogeneous coordinate transformation matrix and geometrical optics Snell’s law. We made a detailed description for the measure theory of decentration error. 　　The measurement of decentra

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Chen, Wen Chien, and 陳文健. "Nanometer-Scale X-Ray Optical Diffraction Device." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/12675048730287675971.

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碩士<br>國立雲林科技大學<br>電子與資訊工程研究所碩士班<br>90<br>The grating and zone plate of x-ray optics, were fabricated using scanning probe lithography (SPL) and e-beam direct writing respectively. We have demonstrated nanostructures of x-ray grating device with scanning probe lithography technique. Grating structures were generated by atomic force microscopy (AFM) with biased tip which transfer ultrathin Si3N4 which thickness is about 5nm into SiOx on (100) oriented Si wafer and then followed by dry etching. A zone plate has been fabricated by e-beam direct writing. The zone plate, a diameter of 200μm, consist

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Fu, Kuang-Yu, and 傅光宇. "Electro-Optical Modulation of the Liquid Crystal Device." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/92320266974190495014.

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碩士<br>國立彰化師範大學<br>光電工程技術研究所<br>92<br>In this thesis, frequency modulations were demonstrated using a liquid crystal light shutter operated in the electric controlled birefringence mode. When the sinusoidal waves was applied to the LC cell, the output sinusoidal waveforms with double or quadratic frequency of the input signal were generated. Also, the output amplitudes and offsets exhibit periodic oscillations. The applied voltage and the backflow effect contribute to the observed phenomena, and the experimental results were compared and explained qualitatively with the simulation results.

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