A circuit model BOSS simulation of nonlinear effects in long distance fiber optic systems

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dc.contributor.authorMehta, Shilpa D.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:40:08Zen
dc.date.adate2009-07-11en
dc.date.available2014-03-14T21:40:08Zen
dc.date.issued1993en
dc.date.rdate2009-07-11en
dc.date.sdate2009-07-11en
dc.description.abstractThe combined effect of group velocity dispersion (GVD) and nonlinearity limits the transmission distance of fiber optic communication systems. By designing a circuit that can model this effect and simulating it using the Block Oriented Systems Simulator (BOSS), we can study the pulse distortion and broadening that may occur. The nonlinearity considered here is self-phase modulation (SPM). A loop system is designed where each pass of the system corresponds to 200 km of fiber. The system mainly consists of a Butterworth bandpass filter which models the dispersion in the fiber and a VCO that imposes a phase modulation on the input signal thus modeling the intensity dependent phase shift due to SPM. By changing various parameters of the circuit, the dispersion limited distance, the nonlinearity limited distance and other related factors can be altered. With D=-0.04 ps/km.nm, the effect of changing the nonlinear limited distance and thus the nonlinear effect is studied and simulated. The results are compared with a simple theoretical model for pulse broadening that has appeared in the literature. Although the simulation results exhibit the same qualitative behavior as the theory, there are significant quantitative differences. The reason for these differences are discussed.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 62 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-07112009-040230en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07112009-040230/en
dc.identifier.urihttp://hdl.handle.net/10919/43655en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1993.M437.pdfen
dc.relation.isformatofOCLC# 29153659en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1993.M437en
dc.subject.lcshBOSS (Electronic computer system)en
dc.subject.lcshElectric circuits, Nonlinear -- Computer simulationen
dc.subject.lcshFiber opticsen
dc.titleA circuit model BOSS simulation of nonlinear effects in long distance fiber optic systemsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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