English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 51296/86412 (59%)
造訪人次 : 8177256      線上人數 : 168
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/75451


    題名: Apparatus and method for monitoring extinction ratio of optical signals
    作者: 楊淳良;Yang, Chun-liang;徐達儒;Hsn, Dar-zu
    貢獻者: 淡江大學電機工程學系;工研院資通所
    日期: 2011-06-28
    上傳時間: 2012-03-27 14:45:31 (UTC+8)
    摘要: An apparatus for monitoring extinction ratio (ER) of optical signals comprises an optical spectrum analyzing unit, an ER monitoring control unit and an ER monitoring output unit. The optical spectrum analyzing unit measures two peak values corresponding to level one and level zero of optical signals from an optical coupler, and obtains two wavelengths for the two peak values. The ER monitoring output unit outputs the difference of the two wavelengths to the ER monitoring control unit. With a relation formula of the wavelength difference, the ER monitoring control unit estimates an optimal resolution bandwidth for setting up the optical spectrum analyzing unit. As such, the optical spectrum analyzing unit measures two optical powers corresponding to level one and level zero of optical signals. With the two optical powers, the ER monitoring output unit computes an ER value.
    顯示於類別:[電機工程學系暨研究所] 專利

    文件中的檔案:

    沒有與此文件相關的檔案.

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋