教師資料查詢 | 類別: 專利 | 教師: 楊淳良 Yang, Chun-liang (瀏覽個人網頁)

標題: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
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.
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語言英文(美國)
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