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Dissertations / Theses on the topic 'Grating Design'

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Published: 4 June 2021

Last updated: 4 February 2022

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1

Li, Lifeng. "Application of diffraction grating theory to analysis and fabrication of waveguide gratings." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184388.

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This dissertation includes three separate studies of related waveguide grating phenomena. These studies deal with a numerical improvement of the integral method of diffraction grating theory, the theoretical analysis of waveguide gratings, and fabrication techniques for photoresist grating masks. The first topic addresses the acceleration of the convergence of the integral kernels. To improve the performance of the integral method for calculating diffraction grating efficiencies, the convergence of the integral kernels is studied. A nonlinear sequence transformation, Levin's u-transformation,

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2

Gibson, Steven Ross. "KiwiSpec: The Design and Performance of a High Resolution Echelle Spectrograph for Astronomy." Thesis, University of Canterbury. Physics and Astronomy, 2013. http://hdl.handle.net/10092/8811.

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This document describes the design, analysis, construction and testing of KiwiSpec, a fibre-fed, high resolution astronomical spectrograph of an asymmetric white pupil design. The instrument employs an R4, 31.6 groove mm⁻¹ échelle grating for primary dispersion and a 725 lines mm⁻¹ volume phase holographic (VPH) based grism for cross-dispersion. Two versions of the prototype were designed and constructed: an 'in-air' prototype, and a prototype featuring a vacuum chamber (to increase the stability of the instrument). The KiwiSpec optical design is introduced, as well as a description of the the

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3

Harper, Kevin Randolph. "Theory, Design, and Fabrication of Diffractive Grating Coupler for Slab Waveguide." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd281.pdf.

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4

Major, Huw E. "QPM grating design for novel PPLN structures." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/301306/.

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This thesis describes a series of theoretical and experimental studies into modifying the phasematching characteristics of nonlinear parametric interactions, specifically second harmonic generation, using quasi-phase-matched structures. The use of quasi-phase-matching by periodic poling affords a flexibility in designing tailored phase-matching characteristics not offered by alternative techniques. In this work phase matching characteristics are modified to provide enhanced acceptance bandwidths, compensation for focusing effects and high power operation. The first result of this work describe

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5

Wang, Yun. "Grating coupler design based on silicon-on-insulator." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44344.

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Silicon-on-insulator has become a promising platform for high-density integrated photonics circuits. The large refractive index contrast between the functional silicon layer and its cladding raises a coupling issue between an optical fibre and on-chip devices. Grating coupler provides a compact and efficient way to tackle the coupling issue between the optical fibre and silicon waveguide. In this thesis, a universal design methodology, which accommodates various etch depths, silicon thicknesses, and cladding materials has been demonstrated and verified by both FDTD simulation and measurement r

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6

Low, Andy Lock Yen. "Analysis and design of grating-embedded optical filters." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289441.

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7

Ibsen, Morten. "Advanced fibre Bragg grating structures : design and application." Thesis, University of Southampton, 2004. https://eprints.soton.ac.uk/46110/.

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This thesis presents experimental and computational work on a variety of advanced fibre Bragg grating structures covering long dispersion compensating chirped Bragg gratings, superstructured Bragg gratings for identical multiple channel operation, Bragg gratings for pulse-shaping applications and Bragg gratings for add-drop applications in high bit-rate systems. Development of the fabrication-technique developed and analysed as a part of this work has led to a number of experimentai 'firsts', including the meter-long Bragg gratings with dispersion-characteristics designed to compensate simulta

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8

Song, Jun. "Electromagnetic simulation and design of etched diffraction grating demultiplexers." Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4791.

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Among various planar lightwave circuits for multiplexing/demultiplexing in an optical communication system, etched diffraction gratings (EDGs) have shown great potential due to their compactness and high spectral finesse. Conventional numerical methods for grating simulation cannot be used to simulate an EDG demultiplexer of large size (in terms of the wavelength). In the present thesis, the polarization-dependent characteristics of an EDG demultiplexer are analyzed with a boundary element method (BEM) for both an echelle grating coated with a metal and a dielectric grating with total internal

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9

Lang, Ryan N. (Ryan Nathan). "Design of a high index contrast arrayed waveguide grating." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/32314.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; and, (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2003.<br>S.B. and S.M. theses issued separately.<br>Includes bibliographical references (p. 115-119).<br>Arrayed waveguide gratings (AWGs) are useful structures for the implementation of wavelength division multiplexing. The AWG consists of an input splitter, a dispersive waveguide array which creates the wavelength demultiplexing and multiplexing effects, and an output coupler. Because the dispersive waveguide arra

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10

Calonico-Soto, Alicia. "Influence of optical crosstalk on WDM all-optical network design." Thesis, University of Essex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327077.

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11

Wu, Shun-Der. "Polymer-based volume holographic grating couplers for optical interconnects." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-06072004-131420/unrestricted/wu%5Fshun-der%5F200405%5Fphd.pdf.

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12

Cronkite, Patrick Joseph 1961. "Design methods for focusing grating coupler using holographic optical elements." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276863.

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Light can be coupled out of a waveguide to a focused point by a focusing grating coupler and has possible applications in optical data storage. The grating can be fabricated with either e-beam techniques or holographic techniques. Two design methods are demonstrated that model the focusing grating coupler with holographic optical elements. Both methods take a geometrical optics approach to designing the holographic optical elements and both methods make use of commercially available ray trace programs. The first method uses complicated non-rotationally symmetric construction optics and require

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13

Murphy, Thomas E. (Thomas Edward). "Design, fabrication and measurement of integrated Bragg grating optical filters." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86582.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.<br>Includes bibliographical references (p. 237-247).<br>by Thomas E. Murphy.<br>Ph.D.

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14

Lombardo, David. "Design and Fabrication of Suspended Waveguides With Photonic Grating Structures." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1591796311145344.

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15

Maikisch, Jonathan Stephen. "Compact silicon diffractive sensor: design, fabrication, and functional demonstration." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45882.

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The primary objective of the presented research is to develop a class of integrated compact silicon diffractive sensors (CSDS) based on in-plane diffraction gratings. This class of sensors uses a silicon-on-insulator (SOI) substrate to limit costs, exploit established fabrication processes, enable integration of supporting electronics, and use the well-understood telecommunications wavelength of 1.55µm. Sensing is achieved by combining constant-diffraction-efficiency and highly-angularly-selective in-plane resonance-domain diffraction gratings. Detection is based on the diffraction efficiency

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16

Hassett, James E. "Design and construction of a medium resolving, power scanning, grating spectrometer." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA374402.

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Thesis (M.S. in Applied Physics and M.S. in Physics) Naval Postgraduate School, December 1999.<br>"December 1999". Thesis advisor(s): D. Scott Davis, Andres Larraza. Includes bibliographical references (p. 77-78). Also available online.

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17

Castro, Jose M. "Design and Application of Anti-Symmetric Grating for Optical Communication Systems." Diss., Tucson, Arizona : University of Arizona, 2006. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1662%5F1%5Fm.pdf&type=application/pdf.

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18

Wong, Rebecca. "Advanced fibre optic long period grating sensors : design, fabrication and sensing." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/9153.

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This thesis describes the process and technique used to fabricate reproducible optical fibre long period gratings (LPG) of various types. It explores how they can be exploited for use as highly selective and sensitive sensors. A versatile method for fabricating LPG sensors has been demonstrated. The single system has the capability of fabricating LPGs of different configurations, such as uniform period, those operating at the phase matching turning point (PMTP), as well as phase shifted and chirped. LPGs were characterised for their sensitivities to temperature, axial strain and surrounding re

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Villalaz, Ricardo A. "Volume Grating Couplers for Optical Interconnects: Analysis, Design, Fabrication, and Testing." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-07102004-165012/unrestricted/villalaz%5Fricardo%5Fa%5F200407%5Fphd.pdf.

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Thesis (Ph. D.)--School of Electrical and Computer Engineering, Georgia Institute of Technology, 2005. Directed by Thomas Gaylord.<br>Glytsis, Elias, Committee Co-Chair ; Buck, John, Committee Member ; Kohl, Paul, Committee Member ; Adibi, Ali, Committee Member ; Gaylord, Thomas, Committee Chair. Vita. Includes bibliographical references.

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Braiwish, Mohammad I. "Fabrication and packaging of carbon-dioxide-laser-induced long-period fiber grating devices." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/15033.

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21

Kim, Ryoung-Han. "Design and fabrication of highly efficient electrooptic modulators using bragg grating reflectors." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/3325.

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Bragg grating reflectors etched in amorphous silicon overlay films have been integrated with Ti:LiNbO3 optical waveguides. With a 12.5 mm long grating segment and an etch depth of ~ 93 nm in a 105 nm-thick silicon film, a narrow (0.05 nm) spectral bandwidth with a record high transmission dip (> 20 dB) was achieved at a wavelength of ~1542 nm for TE polarization on an x-cut, y-propagating substrate. The reflectance in the channel waveguides is found to be strongly dependent on the depth of the etched grating. The 3-dB bandwidth of 0.05 nm obtained for all tested samples is the smallest reporte

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22

Liang, Tao. "Design and modeling of grating-assisted devices for microwave and optical applications." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282414.

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Grating structures have found applications in microwave, millimeter wave, and optical devices and systems. While analytical methods can handle infinite, periodic gratings well, numerical methods usually are needed for general finite and/or aperiodic gratings. We have carried out numerical investigations of a number of grating structures with the finite-difference time-domain approach (FDTD). This approach is selected because of its ability to model complex structures and materials. Some of the many grating applications we investigated include gratings that can be used in waveguide environments

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23

Arthur, Godwin Addiah. "Fatigue Behavior and Design of Heavy Duty Riveted Steel Gratings in Bridge Decks." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1417461847.

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24

Huang, Yishi. "New measurement system for studying thermal diffusivity using the transient surface grating technique." Thesis, London South Bank University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298026.

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25

Mule, Anthony Victor. "Volume grating coupler-based optical interconnect technologies for polylithic gigascale integrat." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/9447.

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26

Churin, E. G. "Analysis and design of concave grating-based devices for multi-wavelength optical networks." Thesis, University College London (University of London), 2004. http://discovery.ucl.ac.uk/1446653/.

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This thesis is focused on the analysis and design of concave holographic gratings for applications in wavelength division multiplexed (WDM) optical network devices, such as multi/demultiplexers, routers and channel equalizers. The main advantage of this approach is that a single optical element can perform both functions of dispersion and imaging. However, the design of such gratings for operation in optical fibre communication networks requires the understanding and control of dominant optical aberrations, stray light, and polarization sensitivity. The solution of these problems forms the bas

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Wun, Aetna W. (Aetna Wai-Yue). "Synthesis, design and characterization of a distributed feedback grating based non-linear optical chemosensor." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32496.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2005.<br>Vita.<br>Includes bibliographical references.<br>Current optical chemosensors that operate by a 3R sensing approach - recognize, relay and report -- generate a measurable luminescent signal in the presence of targeted analyte. However, the advancement of chemical sensing into the micro- and nanoscale regimes necessitates the development of new signaling transduction strategies. There are just too few sensing active sites on the micro- and nano-patterned structures to permit species detection, resulting in the

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28

Gargallo, Jaquotot Bernardo Andrés. "Advanced arrayed waveguide gratings: models, design strategies and experimental demonstration." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/74646.

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[EN] The present PhD thesis deals on the model, design and experimental demonstration of Arrayed Waveguide Grating (AWG) with advanced features. Firstly, building upon existing AWG formulations, design equations are provided, libraries developed and all this is experimentally validated with devices in Indium Phosphide (InP) and Silicon-on-insulator (SOI) technologies. Next, a model and experimental validation is reported for an Interleave-Chirped Arrayed Waveguide Grating (IC-AWG), which is able to process optical signals as WDM demultiplexer, polarization splitter and phase diversity componen

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Gaudron, J. O. "Design and characterisation of long period grating (LPG)-based optical fibre sensors for acoustic wave detection." Thesis, City University London, 2015. http://openaccess.city.ac.uk/8340/.

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Fibre optic sensors have demonstrated a broad range of commercial potential due to their intrinsic characteristics such as low loss, very small size, light weight and immunity to electromagnetic interference. Representing one type of optical fibre sensors, long period gratings (LPGs) have shown a high sensitivity to a number of parameters, including temperature, strain, refractive index and bending, therefore they have been explored widely for a range of potential sensing applications. This thesis is focused on the design, implementation and evaluation of LPGs for acoustic wave detection. In d

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Tsai, Chen-Hung, and 蔡振宏. "Design of Micromachined Modulator Using Dual Grating." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/8wqwr4.

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碩士<br>國立中央大學<br>光電科學研究所<br>94<br>Design, fabrication and measurement of variable dual grating will be showed in this paper. In design, we analyze dual grating element by Fourier Optics and G-solver 4.20. We suppose two types of dual grating; Type A is forming by a 0.5 grating with a period �� and π phase depth, the other is same. Type A can be used for variable optical attenuator, which dynamic range is from 48.52% to 0.08%. Type B is forming by a 0.5 grating with period �� and π phase depth, the other is another 0.5 grating with half the period ��}�� and π/2 phase depth. Type B can be used f

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Liao, Hui-Min, and 廖惠民. "Design and Analysis of Array Waveguide Grating." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/03428799586879000008.

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碩士<br>國立中山大學<br>光電工程研究所<br>91<br>Design and Analysis of Arrayed Waveguide Grating Abstract Fiber optic communication provides extremely broad bandwidth making transferring large quantities of voice/data possible. Dense Wavelength Division Multiplexing (DWDM) is the most critical technology of the optical communication system. It allows the simultaneous transmission of up to hundreds of channels within a single fiber across a distance of thousands of kilometers. Arrayed waveguide grating (AWG) is the most critical component in the DWDM system. It takes a single input and separates differen

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Huang, I.-Chi, and 黃奕琦. "Design of Grating-Assisted Optical Waveguide Filters." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/39056968621644826409.

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碩士<br>國立交通大學<br>電子研究所<br>82<br>Narrow band wavelength selective devices were simulated. Spectral properties of codirectional, contradirecional, transmission resonant grating-assisted waveguide coupler filters were studied. The simulations we performed were based on waveguides made of Si3N4 and p-glass with SiO2 as clading layers. Planar waveguide couplers and ridge waveguide couplers were studied. Our goal is to design optical filters compatible with silicon IC technology. Coupled-mode theo

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Falconer, Beate Stephan. "Grating-tuned external cavity diode lasers." Thesis, 1994. http://hdl.handle.net/1957/35280.

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Diode lasers have many advantages such as small size, high efficiency and small angular dispersion of the collimated beam. However they also have some problems like lack of frequency stability. They can not be tuned in wavelength. An external cavity can solve these problems and decrease the laser linewidth. To obtain a tunable, narrow linewidth light source, antireflection coatings were applied to commercial diode lasers which were then tested in an external cavity. Laser characteristics, such as threshold current, spectral behavior, I-V-curves, tuning range, and bandwidth were measured for th

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Chen, Chien-Cheng, and 陳建成. "The Design of Fiber Bragg Grating Vibration Sensors." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/58342265885099339027.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>91<br>The reflection wavelength of Fiber Bragg Grating is sensitive to the strain and the temperature’s variation. We use Fiber Bragg Grating to be the sensor head and measure the vibration frequency in constant temperature environment. The vibration of object can make the sinusoidal strain to Fiber Bragg Grating, and it will make a little phase difference to the light of the fiber. Using the interferometer and demodulation system, we can measure the phase difference and vibration frequency. Our sensor configuration is made up of imbalance Mach-Zehnder interferomet

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Chou, Yu, and 周遊. "The Configuration Design of Fiber Bragg Grating Hydrophones." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/83976023211207906898.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>91<br>In this paper, the fesibility of using a Fiber Bragg Grating (FBG) as a sensing scheme to detect the underwater acoustic signals is analyzed. When a FBG is disturbed by an underwater sound, the wavelength of the FBG is changed. Therefore, the central spectrum of the reflected light is shifted according to the wavelength change of the FBG. This spectrum can be detected by an imbalanced two-arm interferometer. Its transfer function will be studied. Also, the polarization induced signal fading of those two-arm interferometers will be studied.

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Peng, Po-Xing, and 彭博瑄. "Optimal design and analysis of fiber grating components." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/41804956696760264707.

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碩士<br>國立中正大學<br>機械系<br>91<br>The thesis focuses on how to synthesize the strain distribution of a FBG from a known optical spectrum. For a FBG with a uniform grating pitch, the optical spectrum can be determined straightforwardly using T-matrix method or Rouard’s formula if the strain distribution of this FBG is known. However, to find the required strain distribution of a FBG to produce a given optical spectrum is from the point of view of inverse approach. This inverse problem is solved using optimization technique. As an example of demonstration of this technique, the required strain distri

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張弘煒. "Design and Fabrication of Sampled Grating DFB Laser Arrays." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/87308444981735825432.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>92<br>We present a new design of multiwavelength laser array based on sampled grating DFB lasers. The sampled grating lasers use sampled gratings of different periods and a shift layer to achieve lasing at the first-order reflection peak. With this structure, a simple fabrication procedure as well as high yield could be achieved without using complex e-beam lithography for making multiperiod gratings. Our numerical analysis is based on the transfer matrix method and the coupled mode theory. The effects of grating strength and mirror coating are analyzed in order to i

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Lin, Li-Fan, and 林立凡. "Design of Strain Tuning Surface-bonded Fiber Bragg Grating." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/68619402292781444376.

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碩士<br>國立中正大學<br>機械工程學系暨研究所<br>99<br>A customized FBG filter design method through an inverse approach is presented. For a pre-designated FBG reflection spectrum, the strain distribution of a FBG is firstly calculated. Then a substrate under a certain load is designed using structural optimization in order to produce such strain distribution when an FBG is surface-bonded on this substrate. That is, the pre-designated FBG reflection spectrum is obtained if an FBG is surface-bonded on the substrate subject to a certain load. The methodology of filter design includes three phases. The first is to

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Chen, Chia-Hsiang, and 陳家祥. "Design of Fiber Grating Measurement System and Dynamical Sensor." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/65031778807946366440.

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碩士<br>國立中正大學<br>機械工程所<br>94<br>A fiber-optic measurement system which includes a FBG sensor and a Mach-Zehnder interferometer is developed. A FBG of which center wavelength can be modulated by strain due to photo-elastic effect is utilized as a vibration sensor. A Mach-Zehnder interferometer which includes an ASE light source, two fiber couplers, a photo detector and a PZT actuator is integrated to measure the phase difference induced by this FBG sensor. Two different methods are used in demodulating the measured signal. The first one used a PZT actuator to demodulate the vibration signal to a

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Yang, Yu-Sheng, and 楊裕勝. "Tunable Phase Grating Design & Fabrication - Using CMOS processes." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/34153678776358960298.

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碩士<br>國立清華大學<br>動力機械工程學系<br>89<br>This thesis presents the study of a tunable phase grating using CMOS processes. Grating is an important and popular element in optical systems such as spectrometer. Due to the requirement of high precision, grating devices are expensive based on traditional manufacturing techniques. Using micromachining technique, we can fabricate high-precision, high-performance, but low-cost grating devices. Grating pitch is an important parameter in grating devices. It not only governs the diffractive angle but also affects the dispersion performance. The narrowe

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Chen, Chun-Min, and 陳俊民. "Grating Products Design Research of Taiwan IndigenousPeoples Culture Park." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/27655772347505079766.

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碩士<br>樹德科技大學<br>視覺傳達設計系碩士班<br>103<br>In recent years, Indigenous in Taiwan who achievements are increasing. Particularly in the dance, crafts, music, movies and other cultural and creative industries. From TOTEM, Matzak, glass beads of dragonfly Yazhu, Chen Chien-nien, Chang Chen-yue,shataom,etc. In the show Aboriginal gifted creative and cultural self-presentation itself strength. The present study was conducted studies on the Paiwan culture and totem. Learn more about Paiwan totem for their national significance and influence. Through gather relevant Paiwan aboriginal wood carving, stone car

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Liu, Chun Wei, and 劉俊葳. "The design, manufacture and application of sub-micron grating." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/03356169103147507881.

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博士<br>國立清華大學<br>動力機械工程學系<br>104<br>The sub-micron gratings have been designed, fabricated, and tested. In the grating design, based on the rigorous coupling wave analysis (RCWA), we analyze the relationship between the first order transmission/reflection efficiency and the period of the grating for various shapes as rays pass through the sub-micron gratings. The results show that the diffraction efficiency and diffraction angle strongly depends on the value of the period and its profile. In the grating fabrication, the diamond turning of high-precision imprinting molds and roll-to-roll UV em

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Lin, Puru, and 林溥如. "Design and Fabrication of PECVD SiOxNy Array Waveguide Grating." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/84701740135536890177.

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Chang, Che-Wei, and 張哲維. "Design and Analyses of Subwavelength Grating Polarizing Beam Splitter." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/70504967818135530488.

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碩士<br>國立交通大學<br>光電工程所<br>87<br>Traditional Polarizing Beam Splitters (PBSs), such as Wollaston Prism and MacNeille Polarizer, have advantage of high extinction ratio, broad band, and high efficiency. However, owing to the inherent nature of their asymmetric properties, these PBSs have small field of incident angle and are in huge volume. In order to overcome this shortage, subwavelength grating is used to design a planar PBS with high efficiency and wide field of incident angle. Subwavelength gratings can be treated as uniaxial media with large birefringence. Moreover, the birefring

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Chiang, Ying-Tse, and 江英澤. "Design of Micro-Aspheric Blazed Grating Design and their Gray-level Mask Fabrication." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/60984797391961666958.

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碩士<br>國立中央大學<br>機械工程研究所<br>92<br>A novel micro-aspheric blazed grating integrated with high-efficiency and high-resolution dispersion capability of blazed grating and nearly no aberration limit of aspheric focusing has been proposed. In this thesis, the blazed grating equation and the aspheric polynomial formula of this optical diffractive element are derived, and then the resolution mainly caused by the size of entrance slit, the capability of grating dispersion, surface aberration are discussed. With a suitable size of the entrance slit and a higher diffraction order blazed function, this di

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Yang, Rou-Ching, and 楊若群. "Design, Experiments and Analysis on Tunable Long Period Fiber Grating." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/16381519414116608760.

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Chang, Ying Fa, and 張英發. "Design and Fabrication of Sampled Grating Based WDM Laser Sources." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/32852983954066917418.

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博士<br>國立臺灣科技大學<br>電子工程系<br>90<br>This thesis focuses on the design and fabrication of sampled grating DBR based WDM laser sources. For simplifying the fabrication and operation of multiwavelength laser arrays, we designed a new type of laser arrays where the two SGDBR mirrors of each laser in an array are fabricated on waveguides of different thicknesses. The laser array can generate multiwavelength output by simply operating each laser with a single electrode. We analyze the performance of the laser arrays and optimize the sampling duty cycle and difference in the reflection peak spacings bet

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Sheng, Hao-Jan, and 申浩然. "Design of hydrostatic pressure fiber grating sensors and their applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/50125854614909998903.

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博士<br>逢甲大學<br>電機與通訊工程所<br>97<br>In this dissertation, two new designed hydrostatic pressure fiber grating sensor structures are proposed. The polymer with nice elasticity and the piston like diaphragm are applied respectively to sensor constructions to achieve high measuring sensitivity. In the proposed fiber grating pressure sensor with cylindrical polymer, an axial stretched strain on fiber grating is induced by radial hydrostatic pressure around the sensor. This sensor is combining with an integrated structure and can be applied to the liquid filled with sediments and benthos. In the sensor

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Yeh, Kuan-Chih, and 葉冠志. "Simulation and Design of High-Efficiency Binary Blazed Grating Couplers." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/67332886987485067836.

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碩士<br>華梵大學<br>電子工程學系碩士班<br>103<br>In this paper, a finite-difference time-domain (FDTD) optical simulation software (RSoft Design Group, Inc.) was used to design four kinds of binary blazed grating coupler on the silicon-on-insulator (SOI) or silicon (Si) substrates. Four grating layer materials such as Si, poly-silicon (poly-Si), poly-Si combined with silicon nitride (Si3N4) and gallium phosphide (GaP) were used. In the simulation design process, parameters like grating period, grating height, thickness of buried oxide layer, coupling angle of optical fiber, and horizontal and vertical positi

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Hsieh, Chien-Wei, and 謝建偉. "Design and Study of Temperature Insensitive Displacement Fiber Grating Sensor." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/77914450905849013650.

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碩士<br>國立高雄第一科技大學<br>光電工程研究所<br>98<br>In this paper, we use the sensor based on fiber Bragg grating as sensing element, it will make FBG center wavelength drift to reach sensing effect when the sensor affected by displacements. In this paper, the design of sensors is mainly to sense the displacement. FBG is easily to have misjudgements in sensor value due to the influence of the external environment temperature, so we designed temperature insensitive to make the measured value is more correct. The method of reaching temperature insensitive, the FBG with original single period has been designed

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