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Femtosecond laser-induced apodized Bragg grating waveguides
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.ORCID iD: 0000-0001-7231-5181
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2013 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 38, no 13, 2354-2356 p.Article in journal (Refereed) Published
Abstract [en]

We report on the inscription of apodized Bragg grating waveguides (BGWs) in fused silica using a modulated high repetition rate fs laser system. Tailoring of the grating's coupling strength is facilitated by appropriately substructuring the modulation of the inscribing laser radiation. The proposed alteration delivers an unchanged constant mean refractive index entailing homogeneous guiding properties along the entire waveguide. The BGWs fabricated using a Gaussian apodized modulation profile exhibit a 10 dB improvement in sideband suppression compared to waveguide gratings written with a uniform modulation profile.

Place, publisher, year, edition, pages
Optical Society of America, 2013. Vol. 38, no 13, 2354-2356 p.
Keyword [en]
Fused-Silica, Written, Phase, Glass
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-124969DOI: 10.1364/OL.38.002354ISI: 000321262500064Scopus ID: 2-s2.0-84879627670OAI: oai:DiVA.org:kth-124969DiVA: diva2:638929
Funder
EU, FP7, Seventh Framework ProgrammeSwedish Research Council
Note

QC 20130805

Available from: 2013-08-05 Created: 2013-08-02 Last updated: 2017-12-06Bibliographically approved

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Zeil, Peter

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