Porous Al2O3 Cladded Chopped and Nonchopped Al2O3 Thin Film Waveguides: Effect of Moisture and Leafy Vegetation

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Chopped and nonchopped Al2O3 thin film optical waveguides with porous chopped and nonchopped Al2O3 claddings have been studied for effects due to moisture and leafy vegetation. The changes in the transmission of the cladded waveguide due to relative humidity have been reported in this paper. The changes are more significant when a non chopped waveguide is used. The hot-water-oxidized Al2O3 cladding decreases the output more than the steam-oxidized Al2O3 cladding. The effect of a leaf overlay on the cladded waveguide is also investigated. For the first time, overlay effects on cladded optical waveguides have been reported. The fresh leaves decrease the output significantly, the decrease being more than that when a cladded waveguide is directly exposed to ${\sim}90$% moisture. As the leaves dry, leaf-type-dependent changes are observed. Use of the overlay technique for cladded optical waveguides may provide a direct method for moisture content determination.

収録刊行物

  • Japanese journal of applied physics. Pt. 1, Regular papers & short notes

    Japanese journal of applied physics. Pt. 1, Regular papers & short notes 42(11), 6892-6895, 2003-11-15

    公益社団法人 応用物理学会

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各種コード

  • NII論文ID(NAID)
    10012564080
  • NII書誌ID(NCID)
    AA10457675
  • 本文言語コード
    EN
  • 資料種別
    ART
  • 雑誌種別
    大学紀要
  • ISSN
    0021-4922
  • NDL 記事登録ID
    6752495
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A375
  • データ提供元
    CJP書誌  NDL  J-STAGE  JSAP 
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