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Publications (10 of 60) Show all publications
Liu, C., Yang, X., Laurell, F. & Fokine, M. (2019). Fabrication of a widely tunable fiber Bragg grating filter using fused deposition modeling 3D printing. Optical Materials Express, 9(11), 4409
Open this publication in new window or tab >>Fabrication of a widely tunable fiber Bragg grating filter using fused deposition modeling 3D printing
2019 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 9, no 11, p. 4409-Article in journal (Refereed) Published
Abstract [en]

The use of 3D-printing for designing a simple wavelength tunable device based on fiber Bragg gratings is demonstrated. Using fused deposition modeling (FDM), the fiber Bragg grating is embedded into a beam of polyethylene terephthalate glycol (PETG). Through bending, resulting in compression or tension of the optical fiber, the Bragg wavelength could be continuously tuned over a range of 60 nm, with maintained reflectivity and 3-dB linewidth.

Keywords
3D printing, fiber Bragg grating
National Category
Composite Science and Engineering Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-265583 (URN)10.1364/OME.9.004409 (DOI)000493994700027 ()2-s2.0-85076509198 (Scopus ID)
Funder
Swedish Foundation for Strategic Research , RMA15-0135Knut and Alice Wallenberg Foundation, 2016.0104
Note

QC 20191218

Available from: 2019-12-17 Created: 2019-12-17 Last updated: 2020-01-02Bibliographically approved
Wu, W., Balci, M. H., Muhlberger, K., Fokine, M., Laurell, F., Hawkins, T., . . . Gibson, U. J. (2019). Ge-capped SiGe core optical fibers. Optical Materials Express, 9(11), 4301-4306
Open this publication in new window or tab >>Ge-capped SiGe core optical fibers
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2019 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 9, no 11, p. 4301-4306Article in journal (Refereed) Published
Abstract [en]

CO2 laser processing offers the possibility to inscribe structures within glass-clad SiGe-core fibers by altering the spatial distribution of the Si and Ge. Spatial segregation of Ge to the end of a fiber is shown via optical transmission measurements used to alter the local bandgap, and the curved end of the fiber focuses the output of a multimode fiber. Scalable fabrication is demonstrated using a commercial CO2 laser engraver for processing of arrays.

Place, publisher, year, edition, pages
OPTICAL SOC AMER, 2019
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-264311 (URN)10.1364/OME.9.004301 (DOI)000493994700016 ()2-s2.0-85076559856 (Scopus ID)
Note

QC 20191202

Available from: 2019-12-02 Created: 2019-12-02 Last updated: 2020-01-02Bibliographically approved
Song, S., Lonsethagen, K., Laurell, F., Hawkins, T. W., Ballato, J., Fokine, M. & Gibson, U. J. (2019). Laser restructuring and photoluminescence of glass-clad GaSb/Si-core optical fibres. Nature Communications, 10, Article ID 1790.
Open this publication in new window or tab >>Laser restructuring and photoluminescence of glass-clad GaSb/Si-core optical fibres
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2019 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 10, article id 1790Article in journal (Refereed) Published
Abstract [en]

Semiconductor-core optical fibres have potential applications in photonics and optoelectronics due to large nonlinear optical coefficients and an extended transparency window. Laser processing can impose large temperature gradients, an ability that has been used to improve the uniformity of unary fibre cores, and to inscribe compositional variations in alloy systems. Interest in an integrated light-emitting element suggests a move from Group IV to III-V materials, or a core that contains both. This paper describes the fabrication of GaSb/Si core fibres, and a subsequent CO2 laser treatment that aggregates large regions of GaSb without suppressing room temperature photoluminescence. The ability to isolate a large III-V crystalline region within the Si core is an important step towards embedding semiconductor light sources within infrared light-transmitting silicon optical fibre.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP, 2019
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-251483 (URN)10.1038/s41467-019-09835-1 (DOI)000464976200003 ()30996257 (PubMedID)2-s2.0-85064540314 (Scopus ID)
Note

QC 20190522

Available from: 2019-05-22 Created: 2019-05-22 Last updated: 2019-05-29Bibliographically approved
Theodosiou, A., Fokine, M., Hawkins, T., Ballato, J., Gibson, U. J. & Kalli, K. (2018). Characterisation of silicon fibre Bragg grating in near-infrared band for strain and temperature sensing. Electronics Letters, 54(24), 1393-1395
Open this publication in new window or tab >>Characterisation of silicon fibre Bragg grating in near-infrared band for strain and temperature sensing
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2018 (English)In: Electronics Letters, ISSN 0013-5194, E-ISSN 1350-911X, Vol. 54, no 24, p. 1393-1395Article in journal (Refereed) Published
Abstract [en]

Fibre Bragg grating inscription in the crystalline silicon (Si)-core fibre is described using visible light femtosecond laser pulses. The femtosecond pulses at 517 nm propagate through the transparent silica glass cladding and are fully absorbed by the Si core generating locally high temperatures and stress fields in forming the grating periods. The Si FBGs were characterised in reflection, calibrated for a first time as strain and temperature sensors and compared with that of FBGs inscribed in standard silica fibres.

Place, publisher, year, edition, pages
Institution of Engineering and Technology, 2018
Keywords
Cladding (coating), Electromagnetic pulse, Fiber Bragg gratings, Fibers, Infrared devices, Laser pulses, Silica, Silicon, Crystalline silicons, Grating periods, High temperature, Near infrared band, Silica fibres, Strain and temperature sensing, Strain and temperature sensors, Visible light, Temperature sensors
National Category
Materials Engineering
Identifiers
urn:nbn:se:kth:diva-247033 (URN)10.1049/el.2018.6529 (DOI)000451758700018 ()2-s2.0-85057862062 (Scopus ID)
Note

QC 20190626

Available from: 2019-06-26 Created: 2019-06-26 Last updated: 2019-06-26Bibliographically approved
Song, S., Healy, N., Svendsen, S. K., Osterberg, U. L., Covian, A. V., Liu, J., . . . Gibson, U. J. (2018). Crystalline GaSb-core optical fibers with room-temperature photoluminescence. Optical Materials Express, 8(6), 1435-1440
Open this publication in new window or tab >>Crystalline GaSb-core optical fibers with room-temperature photoluminescence
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2018 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 8, no 6, p. 1435-1440Article in journal (Refereed) Published
Abstract [en]

Glass-clad, GaSb-core fibers were drawn and subsequently laser annealed. The as-drawn fibers were found to be polycrystalline, possess Sb inclusions, and have oxide contamination concentrations of less than 3 at%. Melting and resolidifying regions in the cores using 10.6 mu m CO2 laser radiation yielded single crystalline zones with enhanced photoluminescence (PL), including the first observation of strong room temperature PL from a crystalline core fiber. Annealed fibers show low values of tensile strain and a bandgap close to that of bulk GaSb. 

Place, publisher, year, edition, pages
OPTICAL SOC AMER, 2018
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-230829 (URN)10.1364/OME.8.001435 (DOI)000433955300004 ()2-s2.0-85047063477 (Scopus ID)
Note

QC 20180619

Available from: 2018-06-19 Created: 2018-06-19 Last updated: 2019-08-20Bibliographically approved
Gibson, U. J., Ballato, J., Peacock, A., Laurell, F. & Fokine, M. (2018). Future of semiconductor-core optical fibers. In: Optics InfoBase Conference Papers: . Paper presented at Specialty Optical Fibers, SOF 2018, 2 July 2018 through 5 July 2018. OSA - The Optical Society
Open this publication in new window or tab >>Future of semiconductor-core optical fibers
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2018 (English)In: Optics InfoBase Conference Papers, OSA - The Optical Society , 2018Conference paper, Published paper (Refereed)
Abstract [en]

Semiconductor-core optical fibers hold promise for long wavelength transmission systems as well as for nonlinear and active optoelectronic devices. This talk includes a status report on fiber properties and a prospectus of some future directions.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2018
Keywords
Optoelectronic devices, Semiconductor devices, Fiber properties, Long wavelength, Optical fibers
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-236447 (URN)10.1364/SOF.2018.SoM2H.1 (DOI)2-s2.0-85051267741 (Scopus ID)9781557528209 (ISBN)
Conference
Specialty Optical Fibers, SOF 2018, 2 July 2018 through 5 July 2018
Note

QC 20181022

Available from: 2018-10-22 Created: 2018-10-22 Last updated: 2018-10-22Bibliographically approved
Sorgard, T., Mühlberger, K., Wu, W., Yang, X., Hawkins, T., Ballato, J., . . . Gibson, U. J. (2018). Reduced loss in SiGe-core optical fibers. In: 2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings: . Paper presented at 2018 Conference on Lasers and Electro-Optics, CLEO 2018, San Jose, United States, 13 May 2018 through 18 May 2018. Institute of Electrical and Electronics Engineers (IEEE), Article ID 8427535.
Open this publication in new window or tab >>Reduced loss in SiGe-core optical fibers
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2018 (English)In: 2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2018, article id 8427535Conference paper, Published paper (Refereed)
Abstract [en]

We investigate CO2 laser processing of SiGe-core glass fibers, and show that homogeneous, low optical loss cores can be made. Coaxial Ge-rich centers within the semiconductor cores can also be fabricated.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-234878 (URN)2-s2.0-85052551371 (Scopus ID)9781943580422 (ISBN)
Conference
2018 Conference on Lasers and Electro-Optics, CLEO 2018, San Jose, United States, 13 May 2018 through 18 May 2018
Note

QC 20180912

Available from: 2018-09-12 Created: 2018-09-12 Last updated: 2018-09-12Bibliographically approved
Sørgård, T., Mühlberger, K., Wu, W., Yang, X., Hawkins, T., Ballato, J., . . . Gibson, U. J. (2018). Reduced loss in SiGe-core optical fibers. In: Optics InfoBase Conference Papers: . Paper presented at CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018. Optical Society of America
Open this publication in new window or tab >>Reduced loss in SiGe-core optical fibers
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2018 (English)In: Optics InfoBase Conference Papers, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

We investigate CO2 laser processing of SiGe-core glass fibers, and show that homogeneous, low optical loss cores can be made. Coaxial Ge-rich centers within the semiconductor cores can also be fabricated.

Place, publisher, year, edition, pages
Optical Society of America, 2018
Keywords
Carbon dioxide lasers, Optical fiber fabrication, Optical fibers, Silicon compounds, CO2-laser, Reduced loss, Germanium compounds
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-236413 (URN)10.1364/CLEO_SI.2018.SF3I.6 (DOI)2-s2.0-85048986623 (Scopus ID)9781557528209 (ISBN)
Conference
CLEO: Science and Innovations, CLEO_SI 2018, 13 May 2018 through 18 May 2018
Note

QC 20181026

Available from: 2018-10-26 Created: 2018-10-26 Last updated: 2018-10-26Bibliographically approved
Song, S., Healy, N., Österberg, U., Fokine, M., Sørgård, T., Peacock, A. C. & Gibson, U. J. (2017). GaSb-core optical fibers. In: Optics InfoBase Conference Papers: . Paper presented at Frontiers in Optics, FiO 2017, 18 September 2017 through 21 September 2017. OSA - The Optical Society
Open this publication in new window or tab >>GaSb-core optical fibers
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2017 (English)In: Optics InfoBase Conference Papers, OSA - The Optical Society , 2017Conference paper, Published paper (Refereed)
Abstract [en]

This paper reports recent results on the formation of GaSb-core fibers, formed by molten-core drawing. Purity, crystallographic results and preliminary photoluminescence data are provided for both the as-drawn and laser annealed fibers.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2017
Keywords
Annealed fibers, Molten core, Optical fibers
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-222919 (URN)10.1364/FIO.2017.JW4A.117 (DOI)2-s2.0-85035086287 (Scopus ID)9781557528209 (ISBN)
Conference
Frontiers in Optics, FiO 2017, 18 September 2017 through 21 September 2017
Note

QC 20180403

Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-04-03Bibliographically approved
Fokine, M., Theodosiou, A., Song, S., Hawkins, T., Ballato, J., Kalli, K. & Gibson, U. J. (2017). Laser structuring, stress modification and Bragg grating inscription in silicon-core glass fibers. Optical Materials Express, 7(5), 1589-1597
Open this publication in new window or tab >>Laser structuring, stress modification and Bragg grating inscription in silicon-core glass fibers
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2017 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 7, no 5, p. 1589-1597Article in journal (Refereed) Published
Abstract [en]

Semiconductor core fibers have numerous potential applications in optoelectronics and photonics, and the key to realizing these opportunities is controlled processing of the material. We present results on laser treatments for manipulating the core structure as well as the glass cladding. More specifically, using quasi-CW 10.6 mu m radiation, the clad glass can be softened and the core can be controllably melted. This is shown to permit tapering, localized formation of optical resonators, and stress modification of the as-drawn fiber and structures within it. Shown for the first time to the authors' knowledge are Bragg gratings written by modification of the silicon/glass interface using fs laser illumination at 517 nm. The cores of these fibers show stress alterations, with indications of quasi-periodic stress relief in the glass.

Place, publisher, year, edition, pages
Optical Society of America, 2017
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-207902 (URN)10.1364/OME.7.001589 (DOI)000400494700018 ()2-s2.0-85017436590 (Scopus ID)
Note

QC 20170530

Available from: 2017-05-30 Created: 2017-05-30 Last updated: 2017-11-13Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-9207-4183

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