Low-loss fiber-to-chip couplers with ultrawide optical bandwidth

dc.bibliographicCitation.firstPage10801eng
dc.bibliographicCitation.issue1eng
dc.bibliographicCitation.journalTitleAPL Photonicseng
dc.bibliographicCitation.volume4eng
dc.contributor.authorGehring, H.
dc.contributor.authorBlaicher, M.
dc.contributor.authorHartmann, W.
dc.contributor.authorVarytis, P.
dc.contributor.authorBusch, K.
dc.contributor.authorWegener, M.
dc.contributor.authorPernice, W.H.P.
dc.date.accessioned2021-10-21T06:57:53Z
dc.date.available2021-10-21T06:57:53Z
dc.date.issued2019
dc.description.abstractProviding efficient access from optical fibers to on-chip photonic systems is a key challenge for integrated optics. In general, current solutions allow either narrowband out-of-plane-coupling to a large number of devices or broadband edge-coupling to a limited number of devices. Here we present a hybrid approach using 3D direct laser writing, merging the advantages of both concepts and enabling broadband and low-loss coupling to waveguide devices from the top. In the telecom wavelength regime, we demonstrate a coupling loss of less than -1.8 dB between 1480 nm and 1620 nm. In the wavelength range between 730 nm and 1700 nm, we achieve coupling efficiency well above -8 dB which is sufficient for a range of broadband applications spanning more than an octave. The 3D couplers allow relaxed mechanical alignment with respect to optical fibers, with -1 dB alignment tolerance of about 5 μm in x- and y-directions and -1 dB alignment tolerance in the z-direction of 34 μm. Using automatized alignment, many such couplers can be connected to integrated photonic circuits for rapid prototyping and hybrid integration. © 2019 Author(s).eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/7076
dc.identifier.urihttps://doi.org/10.34657/6123
dc.language.isoengeng
dc.publisherMelville, NY : AIP Publishingeng
dc.relation.doihttps://doi.org/10.1063/1.5064401
dc.relation.essn2378-0967
dc.rights.licenseCC BY 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/eng
dc.subject.ddc530eng
dc.subject.otherFits and toleranceseng
dc.subject.otherOptical fiberseng
dc.subject.otherAlignment toleranceeng
dc.subject.otherBroadband applicationseng
dc.subject.otherCoupling efficiencyeng
dc.subject.otherDirect laser writingeng
dc.subject.otherHybrid integrationeng
dc.subject.otherIntegrated photonic circuiteng
dc.subject.otherMechanical alignmenteng
dc.subject.otherTelecom wavelengthseng
dc.subject.otherAlignmenteng
dc.titleLow-loss fiber-to-chip couplers with ultrawide optical bandwidtheng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorMBIeng
wgl.subjectPhysikeng
wgl.typeZeitschriftenartikeleng
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