Measuring signal to noise ratio of a WDM optical signal
作者： Axel Flettner
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摘要: A device for measuring optical signal-to-noise ratio (OSNR) of a wavelength division multiplexing (WDM) signal including multiple channels may include tunable filter to select an channel the plurality channels. The also polarization controller adjust state selected channel, and control unit compute OSNR based on target point.
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