Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Meindl, James; Committee Co-Chair: Davis, Jeffrey; Committee Member: Callen, Russell; Committee Member: Gaylord, Thomas; Committee Member: Kohl, Paul; Committee Member: Mukhopadhyay, Saibal. Part of the SMARTech Electronic Thesis and Dissertation Collection.

Thesis (Ph.D.)--University of Delaware, 2009. / Principal faculty advisor: Fouad Kiamilev, Dept. of Electrical & Computer Engineering. Includes bibliographical references.

Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Tummala, Rao; Committee Member: Iyer, Mahadevan; Committee Member: Saxena, Ashok; Committee Member: Swaminathan, Madhavan; Committee Member: Wong, Chingping.

Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2009. / Includes bibliographical references.

Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2010. / Committee Chair: Jeffrey A. Davis; Committee Co-Chair: James D. Meindl; Committee Member: Azad J. Naeemi; Committee Member: Dennis W. Hess; Committee Member: George F. Riley; Committee Member: Linda S. Milor. Part of the SMARTech Electronic Thesis and Dissertation Collection.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Paul S. Ho. Vita. Includes bibliographical references.

Thesis (M.S. in electrical engineering)--Washington State University, August 2007. / Includes bibliographical references (p. 36-38).

Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.

The aim of the research presented in this thesis is to develop photonic integrated circuit (PIC) for Radio-over-Fiber (RoF) application. As such, at the beginning of the thesis, a dual-function photonic integrated circuit for microwave photonic applications is proposed. The photonic circuit is arranged to have two separate output ports, and depending upon the RF input signal strength, it provides either tunable millimeter wave carriers by frequency octo-tupling of the RF signal or frequency up-conversion of a microwave signal from the electrical to the optical domain. The circuit exploits the intrinsic relative phases between the ports of multi-mode interference couplers (MMI) to provide all the static optical phases needed, hence drift free. In the middle of thesis, a generalized architecture having N parallel phase modulators driven electrically with a progressive 2π⁄N phase shift is analyzed. The proposed design is justified by computer simulation for N=8 architecture with properly determined optical phase shifts to generate frequency multiplication of an electrical signal. The front- and back-end of the circuit comprises 4×4 MMI couplers enclosing an array of four pairs of phase modulators and 2×2 MMI couplers. The proposed design for frequency multiplication requires no optical or electrical filters; the operation is not limited to carefully adjusted modulation indexes. Later on, a generalized approach for achieving frequency multiplication using two cascades MZM is presented. The proposed design consists of a Mach-Zehnder interferometer with each arm containing a pair of Mach-Zehnder modulators (MZM) in series as a means of optoelectronic frequency multiplication (octo-tupling and quattourviginti-tupling). The circuit requires no electrical or optical filters. There is no requirement to carefully adjust the modulation index to achieve correct operation of the octo-tupler. A comparison is made with an alternative functionally equivalent single-stage parallel MZM circuit discussed herein the thesis. Finally, the thesis describes the generation of the same magnitude but opposite sign high order single optical side band from its output ports by using a RF source. A single stage parallel Mach-Zehnder Modulator (MZM) and a two-stage series parallel MZM architecture is described and their relative merits and demerits discussed. As an illustration of a prospective application it is shown how the circuit may be used to transport radio signals over fibre for wireless access; generating remotely a mm-wave carrier modulated by digital IQ data. A detail calculation of symbol error rate is presented to characterise the system performance. A mathematical analysis is provided to describe the principle of operation for all the proposed design and validated by commercially available industrial standard simulation tool.

Orientador: José Antonio Siqueira Dias / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação / Made available in DSpace on 2018-08-18T14:08:46Z (GMT). No. of bitstreams: 1 Tercariol_WalterLuis_M.pdf: 969536 bytes, checksum: ef254c40a948622d6670f2ff90bee6dd (MD5) Previous issue date: 2011 / Resumo: Esse trabalho visa conceber um circuito baseado na teoria e técnica translinear a fim de ser utilizado na camada física de geração de pulsos de transmissão de dados chamado LIN "Local Interconect Network" difundido largamente na indústria automotiva e utilizado como protocolo de transmissão de dados de baixa velocidade 10kbit/seg ou 20kbit/seg em anel. Esse projeto será parte integrante da malha de controle analógico dessa camada física afim de gerar transições previamente estabelecidas com taxas de subida e descida constantes em 1 Volt por micro segundo (1V/us). O projeto consiste em desenvolver um gerador de pulsos de relógio "clock" utilizando um oscilador de relaxação com corrente de referencia gerada por um circuito translinear. A implementação do circuito será em tecnologia BiCMOS trabalhando na especificação automotiva de VBAT de 6 V a 40 V e variação de temperatura de -40ºC a 150ºC e devera ser capaz de gerar uma frequência inversamente proporcional a variação positiva da bateria convertendo-se em pulsos finitos de "clock" por intermédio de um oscilador de relaxação que realimentara o sistema de controle ao qual gerencia a "forca" a ser aplicada ao barramento LIN a qual varia de 1k Ohm/1nF a 500Ohm/10nF / Abstract: A novel technique to control the LIN (Local Interconnect Network) bus slew rate transitions in automotive environment, where large fluctuations of the battery voltage are present, is reported. A bipolar translinear circuit generates a non-linear current that is used to modulate a MOS relaxation oscillator, producing a clock frequency that delivers a constant number of pulses during the LIN bus digital signal transition. This frequency modulated clock when applied to a digitally controlled analogue wave-shape driver results in a LIN bus digital transition at 10kBit/s or 20kBit/s with a slew-rate that is constant and independent of the car battery voltage. Experimental results measured in an IC implemented in a BiCMOS process showed that constant slew-rate transition of 1 V /us is obtained for battery voltages varying from 6 V to 40 V, over the temperature range of -40ºC to 150ºC / Mestrado / Eletrônica, Microeletrônica e Optoeletrônica / Mestre em Engenharia Elétrica