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 simultaneous channel and optical signal-to-noise ratio monitoring
學年91
學期2
專利開始日期2003/06/14
專利結束日期2003/06/14
作品名稱Apparatus and method for simultaneous channel and optical signal-to-noise ratio monitoring
作品名稱(其他語言)
著者楊淳良; Yang, Chun-liang; Lee, San-liang; Wu, Jui-ting; Yang, Ming-hsiao
單位淡江大學電機工程學系
著錄名稱、卷期、頁數
描述專利國別美國;United States Patent: 7,274,870;Application number: 10/461,626;國際分類號H04B 10/08
摘要An apparatus and method for simultaneous channel and optical signal-to-noise ratio (OSNR) monitoring is adapted to function in multi-channel wavelength-division-multiplexed (WDM) optical communication systems. A polarization controller is sequentially adjusted to perform the sequential polarization control with an optical signal. A polarization-selective electro-optic modulator acts as a polarizer and provides a signal dithering to improve the detection sensitivity. A beam splitter splits the dithered optical signal into two clusters. A photodetector receives the first cluster and measures the OSNR. An optical element receives the second cluster and monitors the channel wavelength of multiple channels. The apparatus can be packaged into a compact module and integrated on a chip. The channel monitoring covers a wide wavelength range and is tunable. The OSNR monitoring can be accurate over a wide dynamic range.
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