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Bragg gratings in thin-film LiNbO3 waveguides
KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum Electronics and Quantum Optics, QEO.ORCID iD: 0000-0001-7242-7300
KTH, School of Engineering Sciences (SCI), Applied Physics.
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.
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2017 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Optics Express, ISSN 1094-4087, Vol. 25, no 26, 32323-32332 p.Article in journal (Refereed) Published
Abstract [en]

We design, fabricate and characterize sidewall corrugated Bragg gratings in a high confinement integrated optics lithium niobate platform, comprising submicrometric photonic wires, tapers and grating couplers to interface off-chip standard telecom optical fibers. We analyze the grating performance as band-rejection filter for TE-polarized signals in the telecom C-band, considering both rectangular and sinusoidal sidewall profiles, and demonstrate record extinction ratios as high as 27 dB and rejection bandwidths as narrow as 3 nm. The results show the potential for an efficient integration of novel photonic functionalities into low-footprint LiNbO3 nonlinear and electro-optical waveguide devices.

Place, publisher, year, edition, pages
Optical Society of America, 2017. Vol. 25, no 26, 32323-32332 p.
Keyword [en]
Lithium niobate; Integrated optics devices; Bragg reflectors; Thin film devices and applications; Waveguides
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Identifiers
URN: urn:nbn:se:kth:diva-220908DOI: 10.1364/OE.25.032323Scopus ID: 2-s2.0-85039046273OAI: oai:DiVA.org:kth-220908DiVA: diva2:1172163
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QC 20180110

Available from: 2018-01-09 Created: 2018-01-09 Last updated: 2018-01-15Bibliographically approved

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Publisher's full textScopushttps://doi.org/10.1364/OE.25.032323

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