Apparatus and method for monitoring extinction ratio of optical signals
學年 99
學期 2
專利開始日期 2011-06-28
專利結束日期 2011-06-28
作品名稱 Apparatus and method for monitoring extinction ratio of optical signals
作品名稱（其他語言）
著者 楊淳良; Yang, Chun-liang; 徐達儒; Hsn, Dar-zu
單位 淡江大學電機工程學系; 工研院資通所
著錄名稱、卷期、頁數
描述 專利國別：美國 United States Patent: 7,969,561 國際分類號：G01N 21/00 Application number: 12/420,820
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.
關鍵字
語言 en_US
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/75451 )

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