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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/53891


    Title: Apparatus and method for simultaneous channel and optical signal-to-noise ratio monitoring
    Authors: 楊淳良;Yang, Chun-liang;Lee, San-liang;Wu, Jui-ting;Yang, Ming-hsiao
    Contributors: 淡江大學電機工程學系
    Date: 2003-06-14
    Issue Date: 2011-05-20 15:37:52 (UTC+8)
    Abstract: 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.
    Appears in Collections:[Graduate Institute & Department of Electrical Engineering] Patent

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