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A Colorless, Directionless and Contention-less ROADM that Utilizes Interconnected WSSs |
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PP: 3327-3334 |
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Author(s) |
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Li Zhao,
Weiqiang Sun,
Weisheng Hu,
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Abstract |
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| We propose a novel colorless, directionless and contention-less (CDC) reconfigurable optical add/drop multiplexer
(ROADM) that is composed of interconnected wavelength selective switches (WSSs). The key components of this ROADM are
interconnected WSSs. Using the connecting branches from WSS to WSS, the channels at any wavelengths from any input may exploit
any transponder in the photonic ROADM node. Both of simulation and analytical results showed that when the number of connecting
branches (r) equals 2, same blocking performance may be achieved as CDC case (where r equals to N-1). Meanwhile, it achieves
significant capital expense saving when compared with other equivalent CDC-ROADMs while assuring 5000 microsecond latency with
the First Fit selection algorithm. |
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