Control of the properties of directional couplers using proton irradiation

Makoto Fujimaki, Keita Kawabe, Masahiro Suzuki, Koichi Awazu, Yoshimichi Ohki, Junji Tominaga

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    The control of the coupling properties of a directional coupler formed in a planar lightwave circuit by proton irradiation was examined. Irradiation of the cladding between the two cores that constitute the coupling portion causes an increase in the coupling coefficient, whereas subsequent irradiation of the entire coupling portion decreases the coupling coefficient. The change in the coupling coefficient results in changes to the coupling ratios, which depend on the irradiated area and fluence. By adjusting these, the desired coupling property can be obtained. This method can be applied in rectifying fabrication errors in any kind of optical device formed in a planar lightwave circuit.

    Original languageEnglish
    Pages (from-to)267-271
    Number of pages5
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume264
    Issue number2
    DOIs
    Publication statusPublished - 2007 Nov

    Fingerprint

    Proton irradiation
    Directional couplers
    proton irradiation
    directional couplers
    Irradiation
    coupling coefficients
    Networks (circuits)
    Optical devices
    Fabrication
    irradiation
    fluence
    adjusting
    fabrication
    causes

    Keywords

    • Directional coupler
    • Ion irradiation
    • Optical communication
    • Planar lightwave circuit
    • Property control
    • Wavelength division multiplexing

    ASJC Scopus subject areas

    • Surfaces, Coatings and Films
    • Instrumentation
    • Surfaces and Interfaces

    Cite this

    Control of the properties of directional couplers using proton irradiation. / Fujimaki, Makoto; Kawabe, Keita; Suzuki, Masahiro; Awazu, Koichi; Ohki, Yoshimichi; Tominaga, Junji.

    In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 264, No. 2, 11.2007, p. 267-271.

    Research output: Contribution to journalArticle

    Fujimaki, Makoto ; Kawabe, Keita ; Suzuki, Masahiro ; Awazu, Koichi ; Ohki, Yoshimichi ; Tominaga, Junji. / Control of the properties of directional couplers using proton irradiation. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2007 ; Vol. 264, No. 2. pp. 267-271.
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