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Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters
Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters
The add/drop apparatus consists of several filters (7-2,7-3) of different wavelength. A selection mechanism selects a filter to add/drop the wavelength signal in wavelength division multiplex (WDM) signal, based on the wavelength of corresponding filter.
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