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Efficient coupling of a laser to a waveguide using a taper designed by conformal mapping

Ash, A E; Austin, M; Love, John

Description

Maximizing the optical power collected in a waveguide from the diffracting field of a semiconductor laser is desirable in optical fibre communication systems. However, the spot size and phase front curvature of the laser field usually makes a poor overlap with the mode of the receiving waveguide. Various proposals have been made to improve this coupling. This paper presents the design of a tapered waveguide section, having the correct geometry and refractive index profile, to efficiently...[Show more]

dc.contributor.authorAsh, A E
dc.contributor.authorAustin, M
dc.contributor.authorLove, John
dc.date.accessioned2015-12-13T23:18:42Z
dc.identifier.issn0306-8919
dc.identifier.urihttp://hdl.handle.net/1885/90307
dc.description.abstractMaximizing the optical power collected in a waveguide from the diffracting field of a semiconductor laser is desirable in optical fibre communication systems. However, the spot size and phase front curvature of the laser field usually makes a poor overlap with the mode of the receiving waveguide. Various proposals have been made to improve this coupling. This paper presents the design of a tapered waveguide section, having the correct geometry and refractive index profile, to efficiently capture and transform the rapidly diffracting light from a semiconductor laser to a planar wavefront in a straight waveguide. Experimentally, such an approach requires the refining of available techniques (UV exposure, ion implantation or diffusion) to obtain the required grading of the refractive index profile within the tapered input section of the receiving waveguide.
dc.publisherKluwer Academic Publishers
dc.sourceOptical and Quantum Electronics
dc.subjectKeywords: Conformal mapping; Electromagnetic wave diffraction; Optical waveguides; Refractive index; Semiconductor lasers; Wavefronts; Pigtailing; Laser optics
dc.titleEfficient coupling of a laser to a waveguide using a taper designed by conformal mapping
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume32
dc.date.issued2000
local.identifier.absfor020501 - Classical and Physical Optics
local.identifier.ariespublicationMigratedxPub20632
local.type.statusPublished Version
local.contributor.affiliationAsh, A E, Ericsson Australia
local.contributor.affiliationAustin, M, RMIT University
local.contributor.affiliationLove, John, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage197
local.bibliographicCitation.lastpage208
local.identifier.doi10.1023/A:1007080925215
dc.date.updated2015-12-12T08:58:02Z
local.identifier.scopusID2-s2.0-0033909012
CollectionsANU Research Publications

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