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dc.contributor.authorJyothikumar, Jagannathanen_US
dc.date.accessioned2014-03-14T20:22:04Z
dc.date.available2014-03-14T20:22:04Z
dc.date.issued1996-06-27en_US
dc.identifier.otheretd-505012959661801en_US
dc.identifier.urihttp://hdl.handle.net/10919/30559
dc.description.abstractAll-fiber spectral filters have the advantages of providing low coupling loss and being readily integrated into fiber-optic networks. Spectral filters made of single-mode identical or dissimilar core parallel fibers provide 3-dB spectral widths on the order of 1 to 10 nm. A spectral filter made of single-mode and dual-mode fibers and operating based on coupling of power between LP01 and LP11 modes is proposed for applications as narrowband demultiplexers and as broadband mode converters with spectral widths of fraction of 1 nm to few 10 nm, respectively. With appropriate choice of parameters, filters can be designed such that the LP01 mode of the single-mode fiber is phase matched with the LP11 mode of the dual-mode fiber at a desired wavelength. Thus, significant exchange of power between these two modes can occur. The coupled-mode theory of parallel dielectric waveguides is used to analyze the proposed filter. Transmission expressions are derived from the governing coupled-mode equations and evaluated numerically for example cases. Two cases corresponding to maximum power coupling at 1.33 mm and 1.55 mm wavelengths are examined. Design data and transmission characteristics versus wavelength for these two cases are presented. The influence of the distance between fiber cores on peak transmission wavelength, spectral width, and coupling length is investigated. The application of the proposed filter as mode converter, which is required in the implementation of dispersion compensation using LP11 mode, is elucidated.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartJjyothi.pdfen_US
dc.relation.haspartetd.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectnoneen_US
dc.titleAll-fiber Spectral Filters based on LP01 - LP11 Mode Coupling and Applications in Wavelength Division Multiplexing and Dispersion Compensationen_US
dc.typeDissertationen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
dc.contributor.committeechairSafaai-Jazi, Ahmaden_US
dc.contributor.committeememberPoon, Ting-Chungen_US
dc.contributor.committeememberScales, Wayne A.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-505012959661801/en_US
dc.date.sdate1998-07-17en_US
dc.date.rdate1996-06-27
dc.date.adate1996-06-27en_US


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