Radiation modes and roughness loss in high index-contrast waveguides

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dc.contributor.author Poulton, CG
dc.contributor.author Koos, C
dc.contributor.author Fujii, M
dc.contributor.author Freude, W
dc.contributor.author Leuthold, J
dc.contributor.author Pfrang, A
dc.contributor.author Schimmel, T
dc.date.accessioned 2009-06-26T04:12:54Z
dc.date.issued 2006-01
dc.identifier.citation IEEE Journal of Selected Topics in Quantum Electronics, 2006, 12 (6), pp. 1306 - 1321
dc.identifier.issn 1077-260X
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/717
dc.description.abstract We predict the scattering loss in rectangular high index-contrast waveguides, using a new variation of the classical approach of coupled-mode theory. The loss predicted by this three-dimensional (3-D) model is considerably larger than that calculated using previous treatments that approximate the true 3-D radiation modes with their two-dimensional counterparts. The 3-D radiation modes of the ideal waveguide are expanded in a series of cylindrical harmonics, and the coupling between the guided and radiation modes due to the sidewall perturbation is computed. The waveguide attenuation can then be calculated semianalytically. It is found that the dominant loss mechanism is radiation rather than reflection, and that the transverse electric polarization exhibits much larger attenuation than transverse magnetic polarization. The method also gives simple rules that can be used in the design of low-loss optical waveguides. The structural properties of sidewall roughness of an InGaAs/InP pedestal waveguide are measured using atomic force microscopy, and the measured attenuation is found to compare well with that predicted by the model.
dc.publisher IEEE Publications
dc.relation.isbasedon 10.1109/JSTQE.2006.881648
dc.title Radiation modes and roughness loss in high index-contrast waveguides
dc.type Journal Article
dc.parent IEEE Journal of Selected Topics in Quantum Electronics
dc.journal.volume 6
dc.journal.volume 12
dc.journal.number 6 en_US
dc.publocation Piscataway, USA en_US
dc.identifier.startpage 1306 en_US
dc.identifier.endpage 1321 en_US
dc.cauo.name FEIT.Faculty of Engineering & Information Technology en_US
dc.conference Verified OK en_US
dc.for 0205 Optical Physics
dc.personcode 102194
dc.percentage 100 en_US
dc.classification.name Optical Physics en_US
dc.classification.type FOR-08 en_US
dc.description.keywords Attenuation integrated optics radiation modes roughness waveguides
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history School of Mathematical Sciences (ID: 340)
utslib.collection.history Closed (ID: 3)
utslib.collection.history General Collection (ID: 346) [2015-05-15T14:11:21+10:00]


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