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Dissertations / Theses on the topic 'Asymmetric couplers'

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Published: 4 June 2021
Last updated: 8 February 2022

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1

Pelegrina, Bonilla Gabriel [Verfasser]. "Asymmetric fused fiber couplers for wavelength- and space-division multiplexing / Gabriel Pelegrina Bonilla." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2015. http://d-nb.info/1077017774/34.

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2

Mak, William Chi Keung Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Coupled Solitary Waves in Optical Waveguides." Awarded by:University of New South Wales. Electrical Engineering and Telecommunications, 1998. http://handle.unsw.edu.au/1959.4/17494.

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Soliton states in three coupled optical waveguide systems were studied: two linearly coupled waveguides with quadratic nonlinearity, two linearly coupled waveguides with cubic nonlinearity and Bragg gratings, and a quadratic nonlinear waveguide with resonant gratings, which enable three-wave interaction. The methods adopted to tackle the problems were both analytical and numerical. The analytical method mainly made use of the variational approximation. Since no exact analytical method is available to find solutions for the waveguide systems under study, the variational approach was proved t
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3

Allan, Sardonia, and Mursal Wali. "Vision om jämställdhet - en illision?‏ : En kvalitativ studie om jämställdhet inom samboförhållanden." Thesis, Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-25781.

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This qualitative study was conducted to investigate how subordination and superiority emerges in the interaction between heterosexual couples between 20 to 30 years old, without children. Eight semi-structured interviews with four couples have been conducted to provide insight into how subordination and superiority is made in the interaction between the cohabiting couples. All interviews were transcribed and then manually categorized along specific main themes and sub themes. The empirical data were then assayed by a hermeneutic interpretation.   Three previous studies have formed the basis fo
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4

Coetzee, Nicola. "Asymmetrical S-band coupled resonator filters." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/2287.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2005.<br>Due to a more densely packed frequency spectrum, there is an increasing demand for narrow band filters with asymmetrical transfer function characteristics. The resulting coupling matrices contain both positive and negative couplings, cross couplings and individual resonator frequency offsets.
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5

Isbiliroglu, Yigit D. "Coupled Soil-Structure Interaction Effects of Symmetric and Asymmetric Buildings In Urban Regions." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/268.

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This thesis deals with the response of idealized building clusters during earthquakes, their effect on the ground motion, and how individual buildings interact with the soil and with each other. We simulate the ground motion during the 1994 Northridge earthquake and focus on the coupled response of multiple simplified symmetric and asymmetric building models located within the San Fernando Valley and the Simi Valley. We use the Domain Reduction Method (DRM) in order to perform these simulations efficiently while recurrently modifying the models without having to redo the entire simulation ever
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Kogan, Anya V., and Anya V. Kogan. "Frontal EEG Asymmetry and Communication Patterns During Discussion of Disagreements in Romantic Partners." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/620878.

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Relationship conflict puts individuals at risk for emotional distress and physical illness. Although many studies in the field have focused on examining cardiovascular, endocrine, and immunological changes associated with relationship conflict, the role of central nervous system processes in relationship functioning remains vastly underexplored. The present study examined frontal electroencephalographic (EEG) alpha asymmetry during discussions of disagreements in romantic partners. Asymmetrical brain activity over the frontal cortex has been conceptualized in the literature as both a trait and
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7

Liu, Zhihua. "THE DESIGN AND SYNTHESIS OF NOVEL UNNATURAL AMINO ACIDS AND THE DESIGN AND SYNTHESIS OF PEPTIDES & PEPTIDOMIMETICS CONTAINING UNNATURAL AMINO ACIDS FOR THE STUDY OF G-PROTEIN COUPLED RECEPTORS." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/204274.

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Nature has gifted peptides as important modulators in the human body, but these types of molecules often have not been favored when we were looking for therapeutic agents. The poor bioavailability, fast degradation and until recent high manufacturing costs of some bioactive peptides lowered their potential usage in the health industry. Under these circumstances, unnatural amino acids were developed as indispensible tools providing enormous support to peptide science. By incorporating proper unnatural amino acids into a peptide or protein, we now can significantly improve peptide's or protein's
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Nsibi, Mohamed Ali. "Asymmetric magnetic domain walls motion in a two-dimensional geometry : causes and effects." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAY047.

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L’étude du déplacement par le courant électrique des parois de domaine magnétique a généré beaucoup d’intérêt depuis l’observation de leurs importantes vitesses de déplacement dans des multicouches ayant une asymétrie d’inversion verticale (SIA). Cet intérêt se justifie par leur fort potentiel pour de nouvelles applications à basse consommation d’énergie en mémoire cache ou mémoires centrale. L’inversion de symétrie (SIA) induit deux mécanismes dont l’action conjointe permet de déplacer efficacement les parois de domaines. Il s’agit d’une contribution énergétique chirale, appelée l’interaction
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Pile, David Fujio Pelleas. "Extremely asymmetrical scattering of waves in periodic Bragg arrays." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15794/.

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This thesis fills in the gaps in the existing theory of wave phenomena in thick diffraction gratings at extreme angles of scattering, i.e. when the scattered wave propagates parallel or almost parallel to the grating boundaries. A consistent theory of a new type of Bragg scattering of bulk and guided optical modes in thick uniform and non-uniform, dissipative and non-dissipative, slanted periodic gratings has been developed. This type of scattering is called extremely asymmetrical scattering (EAS). One of the main distinctive features of EAS is the strong resonant increase of the scatter
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10

Kurlemann, Nils. "Evaluation of C-C-bond coupling enzymes as reversibly immobilised biocatalysts and for the application in a coupled asymmetric alkene oxidation." Berlin mbv, 2008. http://d-nb.info/990627527/04.

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11

Fernández, Ana María. "Asymmetries among homosexual men and women in subjective distress to sexual and emotional infidelity: A critical test of evolutionary hypothesis." CSUSB ScholarWorks, 2000. https://scholarworks.lib.csusb.edu/etd-project/1616.

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12

Branham, Stacy Marie. "Designing Technologies for Empathic Communication." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/51750.

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If you have ever used your phone while on a date to send a text message, or snapped a picture with a friend to upload to Facebook, or cut a sentence down to 140 characters to broadcast on Twitter, you may agree with some leading Social Scientists that technology is changing the way we relate with one another. Our interactions through technology seem to be getting increasingly short with less sophisticated language. More and more, our thoughts are broadcast to everyone instead of intended for someone special. Yet, there is something profoundly human and central to our development that is neglec
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13

Goodman, Steven John. "Resonances of scattering in non-uniform and anisotropic periodic gratings at extreme angles." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16429/.

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Bragg scattering of optical waves in thick gratings at extreme angles, where the scattered wave propagates parallel (extremely asymmetric scattering - EAS) or nearly parallel (grazing angle scattering - GAS) to the grating boundaries, is associated with many unique and practically important resonant phenomena. It has been demonstrated that one of the main physical mechanisms for these resonant phenomena is the diffractional divergence of the scattered wave inside and outside the grating region. This thesis fills the gaps in the theoretical and experimental understanding of Bragg scattering in
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Shie, Ming-Fung, and 謝明峰. "The effect of the asymmetric on polymer asymmetric Bragg couplers." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/hyfy9s.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>98<br>This thesis describes a procedure to fabricate a polymer asymmetric Bragg couplers and Research it’s properties. In this study,the grating structure on a polymer is fabricated first by using holographic interferometry and micro-molding processes. The polymeric wavelength filters are produced by a two-step molding process where the master mold is first formed on a negative tone photoresist and subsequently transferred to a PDMS mold; following this step, the PDMS silicon rubber mold was used as a stamp to transfer the pattern of the polymeric wavelength fil
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Tsai, Meng-Chu, and 蔡孟舉. "A study of Asymmetric Polymer Waveguide Couplers with Bragg Reflectors." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/t7uz8r.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>101<br>This study MEMS technology – based, using the photolithography process to fabricate waveguide channel, combined with soft lithography process technology in micro contact printing and replica molding technology, use of polydimethysiloxane ( PDMS) reprographic copying the waveguide channel to polymer materials, then with Holographic Interference Lithography to cycle adjustable and a large area production, making the bottom of the waveguide diffraction grating, the one waveguide channel have raster, another not of non-symmetrical structure, working condition
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Hsiao, Yu-Tao, and 蕭裕韜. "Study of Dual-Chanel filters based on High Asymmetric Bragg Couplers." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/bhz7jv.

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碩士<br>國立虎尾科技大學<br>光電工程系光電與材料科技碩士班<br>104<br>In this paper, analysis and investigate of polymer waveguide asymmetric structure, in MEMS process technology as the foundation, the use of photolithography process making waveguide structure and waveguide structure reprint onto the polymer material, the waveguide structure of this Device of each coarse end of and the fine end of composition, reuse holographic interference lithography technology to produce a Bragg grating in the crude end of the waveguide at the bottom, and no fine end of to form an asymmetric structure. Filling different materials d
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Kao, Wei-mei, and 高薇湄. "The effect of the waveguide gap and asymmetric on the coupling efficiency of polymer asymmetric Bragg couplers." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/71118057877153279903.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>98<br>In this work, we successfully developed a process to fabricate dual-channel polymeric waveguide filters based on an asymmetric Bragg coupler (ABC) using holographic interference techniques, soft lithography and micro molding. We also obtain the influence of the waveguide gap and asymmetric on the coupling efficiency of polymer asymmetric Bragg coupler. In this experiment, the grating structure on a polymer is fabricated first using holographic interference techniques and micro molding processes. Next, we will fabricate an asymmetric Bragg coupler device through
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18

Liao, Che-Yi, and 廖哲毅. "The Effect of The Different Core Layer on Polymer Asymmetric Bragg Couplers." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/823mkt.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>100<br>This thesis describes a procedure to fabricate a polymer asymmetric Bragg couplers and Research it’s properties. In this study, the grating structure on a polymer is fabricated first by using holographic interferometry and micro-molding processes. The polymeric wavelength filters are produced by a two-step molding process where the master mold is first formed on a negative tone photoresist and subsequently transferred to a PDMS mold; following this step, the PDMS silicon rubber mold was used as a stamp to transfer the pattern of the polymeric wavelength f
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19

Chang, Chien-Wen, and 張建文. "Design of Dual Band Branch-Line Couplers Based on Asymmetric Spur Lines." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/19630838853497797702.

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碩士<br>國立高雄第一科技大學<br>電子工程研究所<br>103<br>This paper presents the design of dual band branch-line couplers. In the proposed design, all asymmetric spur lines and conventional branch lines are only a quarter-wavelength long(λ).Both of them equal to each other.Asymmetric spur lines structure used asymmetric coupled lines to improve and conventional circuit consisted of a branch line merging parallel open stub. In theory, it can be acquire actual size from simulation. However, symmetric spur lines were derived by asymmetric spur lines in appropriate condition. To support implement circuit from impeda
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20

Kuo, Jih-Sheng, and 郭日升. "Comparison of numerical simulation and experiments of asymmetric light couplers for sunlight collection." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/cu9u2z.

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碩士<br>國立臺北科技大學<br>光電工程系研究所<br>102<br>Because of global warming and energy shortage, energy saving and carbon reduction are the most important problem of all human beings. The solution to reduce carbon emissions is to use green energy in which solar energy is the most environment-friendly. By importing sunlight into houses, we can save a lot of energy. Solar lighting system is composed of collectors, light couplers, and light exits. Daylight illumination system must provide sufficient sunlight, especially in indoor lighting of the building. The key to increase the amount of accumulated sunlight
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LUO, YU-WUN, and 羅鈺雯. "A Study of Optical Filters Based on Asymmetric Bragg Couplers with Liquid Crystal Tuned Spectra." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4gb9d4.

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22

Lee, Chieh-Hsun, and 李杰勲. "The study of broadband polarization beam splitters based on asymmetric adiabatic couplers in Ti-diffused lithium niobate waveguides." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/h3zepj.

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碩士<br>國立中央大學<br>光電科學與工程學系<br>106<br>In this study, the structure of asymmetric adiabatic coupler (AAC) is designed using the concept of Stimulated Raman Adiabatic Passage (STIRAP), and applied it on the lithium niobate(LiNbO3) with the titanium diffused waveguides to become a polarization beam splitter. We designed the structure into two parts to split TE and TM polarization. Our goal is to achieve the broadband polarization beam splitter by using a two-stage structure to separate two different polarized lights. Before the fabrication process, we do the simulation part. In the simulation proce
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WU, ZHE-HUI, and 吳哲暉. "Asymmetrical microstrip forward couplers." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/01696819441427601438.

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Lin, Yu-Kai, and 林郁凱. "Fabrication of polymer asymmetric Bragg coupler." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/99x43z.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>96<br>Abstract This thesis describes a procedure to replicate a polymeric wavelength filter. In this work, the grating structure on a polymer is fabricated first using holographic interferometry and micro-molding processes. The polymeric wavelength filters are produced by a two-step molding process where the master mold is first formed on a negative tone photoresist and subsequently transferred to a PDMS mold; following this step, the PDMS silicon rubber mold was used as a stamp to transfer the pattern of the polymeric wavelength filters onto a UV cure epoxy. In
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Loan, Nguyen Thi, and 阮氏鸞. "Fabrication of the Asymmetric Bragg Grating Coupler Filter." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/chrj43.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>101<br>Abstract In this work, we successfully fabricate an asymmetric Bragg grating coupler filter using holography interference technique, soft lithography and micro molding. The mechanism is based on Bragg reflection coupled mode theory. With different material on individual core, the tuning wavelength range could be extended. The asymmetric Bragg filter has grating period of 500nm and grating depth of 250nm. The transmission characteristic shows that the filter band centered at around 1600nm. The transmission dips of grating are about 16dB.
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Chen, Shr-Wei, and 陳仕委. "A Fabrication of Asymmetric Bragg Coupler without Self-reflection." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/fv9p33.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>98<br>In this research, it is to fabricate bi-channel filters with a technology to fabricate Grating on Waveguide by using techniques of Holographic inference and Photolithography. In this experiment, it cooperate the technique MEMS fabrication and optical lithography to fabricate the master molding of polymer Waveguide along with techniques of microcontact printing, replica printing and soft printing, how it fabricated out the bi-channel filter is to stamp in the grating with waveguide mold into grating the of using photolithography formation. It is easily to a
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Li, Jia-Han, and 李佳翰. "Electromagnetic Modeling for Asymmetrical Fused Fiber-Optic Couplers." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/15152751894620270094.

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碩士<br>國立臺灣大學<br>電機工程學系<br>85<br>Based on a full-wave vectorial formulation, the surface integral equation method (SIEM) has been employed to investigate the coupling characteristics of fused fiber-optic couplers. To establish a three-dimensional (3-D) electromagnetic model for the fused coupler, the step-like approximation is used to approximate the tapered structure of the coupler into many small segments. The SIEM is employed to solve the propagation characteristics for each segment, and
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Chang, Ting-kai, and 張庭凱. "Polarization beam splitter based on a dielectric loaded asymmetric directional coupler." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/64009704113521822153.

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碩士<br>國立臺南大學<br>電機工程學系碩士班<br>101<br>A polarization beam splitter (PBS) based on asymmetrical directional coupler (ADC) is proposed by utilizing the different aspect ratios between a wide waveguide and a dielectric loaded narrow waveguide. The TM mode is design to be well coupled in the ADC. Meanwhile, the large phase mismatched TE mode results in negligible coupling. Finally, We connect S-bent waveguide at the end of the coupling region to make the two waveguides separated far enough. The simulation results show that the present PBS has a high extinction ratio of more than 20 dB, and the dev
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Majeed, Asmaa H., Abdulkareem S. Abdullah, Fauzi Elmegri, Khalil H. Sayidmarie, Raed A. Abd-Alhameed, and James M. Noras. "Aperture-Coupled Asymmetric Dielectric Resonators Antenna for Wideband Applications." 2014. http://hdl.handle.net/10454/8422.

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yes<br>A compact dielectric resonator antenna (DRA) for wideband applications is proposed. Two cylindrical dielectric resonators which are asymmetrically located with respect to the center of a rectangular coupling aperture are fed through this aperture. By optimizing the design parameters, an impedance bandwidth of about 29%, covering the frequency range from 9.62 GHz to 12.9 GHz, and a gain of 8 dBi are obtained. Design details of the proposed antenna and the results of both simulation and experiment are presented and discussed.
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李恭儀. "Multiple tunneling and chaos in asymmetric coupled quantum wells." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/09669899326186103253.

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Ding, Yan-Wun, and 丁彥文. "Fabrication of an Asymmetric Bragg Coupler Filter with non-identical Core Materials." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/q9j74k.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>102<br>In this study, a negative photoresist with photolithography process technology waveguide structure and the use of soft lithography die-stamping Holographic Interference Lithography technology combines the advantages of adjustable cycle and its large area production, etc., to produce optical add-drop multiplexer element waveguide structure of this element into the input and output side, there are two channels of a thin a thick, coarse end of the waveguide at the bottom of the use of holographic interference lithography to produce Bragg Grating at the botto
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Lin, Chi-Hsing, and 林其興. "A study of asymmetric Bragg coupled device with polymer waveguides." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/7xeb56.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>96<br>In this research, we propose a novel technique of fabricating an asymmetric Bragg coupler device by using holographic technique and master molding of soft printing along with the photolithography. First, we produce out a polymeric Bragg Grating by Holographic lithography and then carried out a master mold of a Bragg Grating associated with techniques of micro-contact printing, micro-molding in capillaries and replica molding. While successfully fabricated a master mold of polymeric Grating component, we fabricated an asymmetrical waveguide coupler on the g
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Cai, Qing Bin, and 蔡清斌. "Chaotic behavior of hole mixing tunneling in asymmetric coupled quantum wells." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/86495615119265573067.

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WANG, JUN-FU, and 王俊富. "Second-order nolinear optical susceptibilities of compositionally asymmetric coupled quantum wells." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/21033261869570018764.

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Lee, Wei-Lun, and 李偉倫. "Directional-Coupler-Based Polarization Splitting in Asymmetric Metal/Multi-Insulator Configuration for Optical Nanocircuitry." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/25255571923920438718.

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碩士<br>國立中央大學<br>光電科學研究所<br>100<br>This thesis described the design and analysis of a novel directional-coupler-based polarization splitter for optical nanocircuitry in two-dimensional (2-D) asymmetric metal/multi-insulator configuration. The design and optimization of the proposed device are conducted using 2-D finite-element-based numerical simulations while modified coupled-mode theory for lossy parallel waveguides is developed as the mathematical background of this research. The introduction of silver region in asymmetric air/silicon/silica waveguide is shown to not only enhance the field c
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Chan, Chi-Hung, and 詹麒宏. "New Crossover Coupler Design Using Asymmetric Branch-Line Hybrids and Its Dual-Band Operation." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/04074713060043924164.

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碩士<br>國立交通大學<br>電信工程研究所<br>98<br>Two asymmetric branch-line hybrids with arbitrary power divisions are cascaded for design of a crossover coupler. The two pairs of the diagonal ports are allowed to have different characteristic impedances. Block ABCD matrices are applied to estimate the bandwidth of the crossover coupler. To achieve the dual-band operation, an elementary two-port is employed to replace the ??4-section of each hybrid. The two-port consists of a stepped-impedance section with two open stubs shunt at both of its ends. By means of the transmission-line theory, analytical equat
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Yung-Chang, Sze, and 施永昌. "Quasi-Static Analysis of Asymmetric Coupled Transmission Lines by Boundary Element Method." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/70484110720701154274.

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碩士<br>大同工學院<br>電機工程研究所<br>81<br>A modified boundary element method in the application of quasi- TEM analysis of microstrip coupled lines is The analytic results are then used to design the forward and backward directional coupler. Applying the coupled-mode lation of microstrip coupled lines, the directional coupler be treated as a four port network and the circuit parameters can easily be obtained. In this thesis, investigation is mainly made on the asymmetric coupled microstrip lines. The
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Tien, Yao Cheng, and 田曜丞. "A single photon emitter implemented by electrostatically-gate asymmetric coupled quantum well." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/59055261583259659971.

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碩士<br>國立清華大學<br>光電工程研究所<br>104<br>We present the modeling of dipolar excitons in AlGaAs based, asymmetric coupled quantum wells with a vertical electric field induced two-dimensional electrostatic trap. We theoretically show that when the trap size and depth are carefully engineered, it is possible for the system to enter an exciton blockade regime in which single photon emissions can be obtained. Due to the unique properties such as the trap geometry and position can be precisely defined by photolithography, the proposed single photon emitter may find new applications in quantum information p
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Haobijam, Olivia Devi, and 歐莉文. "Study of Optical Coupler Asymmetry Effects on Optical Coherence Tomography Measurements." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/24r8y8.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>99<br>Optical coherence tomography (OCT) is a popular method for creating real-time three-dimensional images of biological and non-biological specimens. This imaging modality uses the interference between light backscattered from a sample and light that has traversed a known reference path delay to determine the scattering profile over penetration depths up to several millimeters in biological tissues. Frequency-domain OCT (FD-OCT) is an implementation of OCT which provides advantages in signal-to-noise ratio along with faster signal acquisition than other OCT methods
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Yang, Chao-Shun, and 楊超舜. "Analysis of asymmetrical coplanar coupled line for antenna applications." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/q93s3y.

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博士<br>國立交通大學<br>電信工程研究所<br>103<br>So far, the coplanar waveguides (CPW) are extensively used for all kinds of microwave circuits and components, it is one of the most basic transmission lines. In the past, numerous papers had solved the analytical solution for the finite/infinite ground-plane CPW, conductor backed CPW and symmetrical multi-metal-plate CPW. There are many full-wave simulators available for evaluating arbitrarily shaped transmission-line parameters such as characteristic impedance and effective dielectric constant. However, for asymmetrical CPWs (e.g. coplanar coupled line), des
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Wu, Sung-Lin, and 吳松霖. "Photoluminescence Study of Zn0.48Cd0.52Se/Zn0.24Cd0.18Mg0.58Se Asymmetric Coupled Quantum Well Structure Grown by MBE." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/a3zzcb.

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碩士<br>明志科技大學<br>電子工程系碩士班<br>102<br>Photoluminescence (PL) was used to characterize the optical transitions in a ZnCdSe/ZnCdMgSe asymmetric coupled quantum well (ACQW) structure grown on InP substrate by molecular beam epitaxy. The PL spectra revealed the situation of the optical transition in the ACQW structures. Using Gaussian line shape to fit transition energies depends on temperatures. Then use Varshni and Bose-Einstein relation consistent transition energy depends on temperature, the parameters obtained value analysis of the optical characteristic of the transition energy of ZnCdSe/ZnCdMg
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Chen, You-Rang, and 陳佑榮. "Fabrication of an Optical Add/Drop Multiplexer with Liquid Crystal in an Asymmetric Bragg Coupler Waveguide." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/g82485.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>102<br>In this thesis, research and analysis of polymer waveguide asymmetric structure in LIGA technology in the photolithography process, the micro-contact molding, copy forming technology, making the waveguide structure to polymer materials, and use its technology to one of the waveguide channels shelter, then the use of holographic interference lithography to fabricate waveguide Bragg gratings on the bottom, forming a non-symmetrical structure. In the process, two waveguide cores are the different materials in the waveguide elements , in the input / output si
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Sung, Li-Wei, та 宋立偉. "Study of 1.55 μm asymmetric couple quantum well active layer laser-modulator OEIC". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/71295556112505772690.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>87<br>In this study, we realize 1.55μm DFB laser - modulator optoelectronic integration circuits by using identical active layer (IAL) approach which applies the same active layer in laser and modulator. To solve the intrinsic problem in identical active layer approach that the laser gain spectrum is too close to the modulator absorption, a novel asymmetric couple quantum well structure was designed to enlarge the separation between the gain and absorption spectrum theoretically. Then two epitaxial samples with conventional QWs and asymmetric couple QWs were grown b
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Tang, Jing-Yau, and 唐敬堯. "Fabrication of Asymmetric Bragg Coupled Devices with Polymer Waveguides by Using Micro-Molding Process." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/326yx6.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>97<br>In this thesis, we propose a novel technique of fabricating an asymmetric Bragg coupled devices with polymer waveguides by using master molding of soft printing with the photolithography and holographic technique. First we made a ridge waveguides component through photolithography. We used the holography interference to implement a polymer Bragg waveguide component then with micro-contact printing of the soft printing, micro-molding in capillaries and replica molding to fabricate the molding of soft asymmetric Bragg coupled device with polymer waveguides c
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Xiao, Min-Yuan, and 蕭閔元. "Silicon-on-Insulator Polarization Beam Splitter Based on a Taper Asymmetrical Directional Coupler." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/60100169290533679232.

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碩士<br>國立中山大學<br>光電工程學系研究所<br>100<br>Polarization dependences of optical devices in highly-integrated optical systems become a major problem. To overcome this issue, one can implement polarization diversity scheme to achieve a single polarization on-chip network. One of the essential components in a polarization diversity scheme is the polarization beam splitter (PBS). In this thesis, we will a PBS based on a silicon-on-insulator (SOI) platform with reduced device size and broad operation bandwidth. We use the three-dimensional Finite-Difference Time-Domain (3D-FDTD) method to perform the simul
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"Graduate School Stress, Dyadic Coping, and Well-Being in Asymmetrical Graduate Student Couples." Master's thesis, 2017. http://hdl.handle.net/2286/R.I.44111.

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abstract: The demands and expectations of graduate school can be stressful for any student. Graduate students in a romantic relationship, in particular, contend with both individual and dyadic effects of graduate school stress, as stress has been found to be negatively associated with both individual and relational well-being. Asymmetrical graduate student couples, wherein one partner is in graduate school and the other is not, may be particularly vulnerable to relationship strain because of differences in their experience of graduate school. However, non-student partners can help the graduate
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Yi-ChenSung and 宋宜臻. "Effects of time delay asymmetry on two mutually coupled lasers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/67rfdt.

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Bin-KaiLiao and 廖彬凱. "Effects of injection strength asymmetry on two mutually coupled lasers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6e72e6.

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碩士<br>國立成功大學<br>光電科學與工程學系<br>106<br>In this thesis, we present a numerical investigation of mutually injected semi-conductor lasers when the injection strength is asymmetric. For the purpose of ap-plications on communication system, the investigation focuses on period-one dy-namics and stable dynamics. First of all, the dynamics scenario of short delay sys-tem is studied to serve as a complete view of the dynamics changing. In order to study the effect on chip-scale mutually injected devices, we investigate the ul-tra-short delay system. Besides, the period-one dynamics is investigated in micr
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Luo, Guo-Wei, and 羅國瑋. "A Study on Cross-Coupled Asymmetrical Bandpass Filter with Attenuation Pole." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/85029559105949462991.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>92<br>In the design of the cross-coupled asymmetrical bandpass filter with attenuation pole, the center frequency, the 3dB bandwidth, the insertion and return losses in the passband, and the frequency of attenuation pole in the stopband are the important parameters to be considered. In this thesis, the folded open-loop resonators are used to design the cross-coupled asymmetrical bandpass filters with attenuation poles. In this thesis, the design theory of the cross-coupled asymmetrical bandpass filter with attenuation pole is analyzed firstly. Next, the cross-cou
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Tu, Po-hsiang, and 涂博翔. "Development of Miniaturized Microwave Ring Coupler Using Asymmetrical T-structures and Dual Transmission Lines." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/d39u37.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>99<br>In this thesis, two guided-wave structures, namely “asymmetrical T-structures” and “dual transmission lines”, have been introduced, and then applied to realize compact planar ring couplers. Basically, this thesis consists of two main parts. The first part is using “asymmetrical T-structures” to design two miniaturized ring couplers. Two developed couplers only occupy 3.9 % and 4.48 % circuit sizes of the conventional structure, respectively. In addition, combining the reduce-length ring coupler and asymmetrical T-structures, the compact ring couplers can be rea
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