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We compare WDM optical networks employing Black Link interfaces versus proprietary-based transceivers. Future optimal use and coexistence of both approaches is analyzed using latest conceptual and experimental achievements at 400G and beyond.
This paper aims to review the status of standardization activities on the black link (BL) and corresponding alien wavelength concepts. It discusses experimental work on filterless optical networks conducted within a dedicated Deutsche Telekom project. The general prospects and existing challenges concerning elastic extensions of the BL are also assessed. Furthermore, we present relevant work on control...
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