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Supercontinuum generation and dispersive wave in highly birefringent optical fiber

Posted on:2013-07-30Degree:Ph.DType:Thesis
University:The University of Wisconsin - MilwaukeeCandidate:Herrera, Rodrigo AcunaFull Text:PDF
GTID:2458390008964536Subject:Physics
Abstract/Summary:
This thesis presents a general study of the generation of Supercontinuum (SC) and dispersive wave (DW) in birefringent Photonic Crystal Fiber (PCF), and how these phenomena can be affected by the presence of acoustic wave (AW) through the fiber. The work is divided in three main parts. In the first part, we show some analytical and numerical study of Dispersive Wave generated by soliton in birefringent Fiber Optics (FO). We study the state of polarization (SOP), the frequency, and peak power of the DW for three different birefringences. Using the Lagrangian formulation and the Stokes parameters, we analyze the SOP of the soliton. We propose an analytical approximation to find the DW frequency, and also numerically study how peak DW power behaves.;In the second part, we present a method to calculate the acousto-optic coupling coefficients between the guided modes of optical fibers in a standing acoustic wave. We show that our results are in excellent agreement with previously published experimental measurements. We also show that these acousto-optic coupling coefficients scale almost linearly with the acousto-optic frequency. Some experimental results will be shown, which matches with our method. This method can be used to design an optical filter that removes those undesirable frequencies created in the SC and DW.;Finally, in the third part, we present the influence of applying acoustic vibrations to photonic crystal fibers on the SC generation when we consider the acoustic signal induced loss. We will show numerically the strong influence of coupling modes in PCF on the latest stage of SC and simulations of different scenarios of phase matching condition between core and cladding modes.
Keywords/Search Tags:Dispersive wave, Birefringent, Generation, Optical, Fiber
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