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  • 1.
    Carvalho, Isabel C. S.
    et al.
    Pontifical Catholic University of Rio de Janeiro, Brazil.
    Tarasenko, Oleksander
    RISE, Swedish ICT, Acreo.
    Camara, Alexandre R.
    Rio de Janeiro State University, Brazil.
    Pereira, Joäo M. B.
    Pontifical Catholic University of Rio de Janeiro, Brazil.
    Margulis, Walter
    RISE, Swedish ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Pockels fibers by optical poling2015In: Workshop on Specialty Optical Fibers and their Applications 2015, 2015, article id WT4A.22Conference paper (Refereed)
    Abstract [en]

    Silica fibers with internal electrodes biased with HV are poled when simultaneously excited by green light. The x(2) induced measured through the Pockels effect at 1.55 μm reaches ~0.11 pm/V. Poling and erasure are studied.

  • 2.
    Gladyshev, Alexey V.
    et al.
    Russian Academy of Sciences, Russia.
    Corbari, Costantino
    University of Southampton, UK.
    Tarasenko, Oleksander
    RISE, Swedish ICT, Acreo.
    Yatsenko, Yu P.
    Russian Academy of Sciences, Russia.
    Semjonov, Sexrgei L.
    Russian Academy of Sciences, Russia.
    Margulis, Walter
    RISE, Swedish ICT, Acreo.
    Kazansky, Peter G.
    University of Southampton, UK.
    Hernandez, Yves
    Multitel, Belgium.
    Second-order nonlinearity in optical fibers: Achievements and perspectives2016In: Optics InfoBase Conference Papers: Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials, 2016Conference paper (Refereed)
    Abstract [en]

    Recent progress in thermal poling of silica fibers is reviewed. It is demonstrated that state-of-the-art poled fibers can be used in a number of practical applications. Challenges for further development of poled fiber devices are discussed and possible solutions proposed.

  • 3.
    Malmström, Mikael
    et al.
    KTH Royal Institute of Technology, Sweden; Uppsala University, Sweden.
    Tarasenko, Oleksander
    RISE, Swedish ICT, Acreo.
    Margulis, Walter
    RISE, Swedish ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Laurell, Fredrik
    KTH Royal Institute of Technology, Sweden.
    All-Fiber Nanosecond Gating for Time-Resolved Spectral Analysis2016In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 28, no 8, p. 829-832, article id 7381625Article in journal (Refereed)
    Abstract [en]

    We demonstrate the addition of time gating to a standard optical spectrum analyzer (OSA) operating in the spectral region ∼ 1.06 μm. This is accomplished by opening for 7 ns the optical input to the OSA with an electrically driven poled fiber in a Sagnac loop. The sequential interrogation with nanosecond resolution of the reflection from three fiber Bragg gratings along a piece of fiber allows distinguishing the spectral peaks created with a minimum separation of 85 cm. The passive extinction ratio of this device is >40 dB and returns to >40 dB from >23 dB on a 35-ns time scale directly after time gating.

  • 4.
    Pereira, J. M. B.
    et al.
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Camara, A. R.
    Universidade Do Estado Do Rio de Janeiro, Brazil.
    Laurell, F.
    KTH Royal Institute of Technology, Sweden.
    Tarasenko, Oleksander
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Poling Optical Fibers with UV Lamp2019In: 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings, Institute of Electrical and Electronics Engineers Inc. , 2019Conference paper (Refereed)
    Abstract [en]

    Silicate fibers with internal electrodes are optically poled without a laser by side-exposure to radiation from a UV tubular lamp. Electrooptic coefficients κ(2)∼ 0.04 pm/V and Vπ = 810 V are obtained

  • 5.
    Pereira, Joao
    et al.
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Camara, Alexandre
    Universidade do Estado do Rio de Janeiro, Brazil.
    Laurell, Fredrik
    KTH Royal Institute of Technology, Sweden.
    Tarasenko, Oleksander
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Margulis, Walter
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Linear electro-optical effect in silica fibers poled with ultraviolet lamp2019In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 27, no 10, p. 14893-14902Article in journal (Refereed)
    Abstract [en]

    A second-order nonlinearity was induced in silica fibers poled by exposure to ultraviolet (UV) radiation and simultaneous high voltage applied to internal electrodes. The UV light source was a tubular lamp with spectral peak at 254 nm. The highest second-order nonlinear coefficient measured through the linear electro-optic effect was 0.062 pm/V. The erasure of the recorded voltage with UV excitation was studied, and the stability of the poled fiber at a temperature exceeding ~400 K was investigated. By eliminating the use of a focused laser beam as excitation source, the technique enables poling many pieces of fiber in parallel.

  • 6.
    Yu, Zhangwei
    et al.
    RISE, Swedish ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Malmström, Mikael
    RISE, Swedish ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Tarasenko, Oleksander
    RISE, Swedish ICT, Acreo.
    Margulis, Walter
    RISE, Swedish ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Laurell, Frederik
    KTH Royal Institute of Technology, Sweden.
    A Tunable All-Fiber Laser Based on a Stress-Optic Phase Modulator and a Chirped Fiber Bragg Grating2015In: Workshop on Specialty Optical Fibers and their Applications (WSOF 2015), 2015, article id WT4A.21Conference paper (Refereed)
    Abstract [en]

    A tunable single-wavelength Erbium-doped all-fiber laser was experimentally demonstrated. The tuning is obtained with a stress-optic phase modulator based on a twin-hole fiber and a chirped fiber Bragg grating in a medium birefringence fiber.

1 - 6 of 6
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