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Multipass Performance of a Chip-Enhanced WSS for Nyquist-WDM Sub-Band Switching
We investigate the performance of a chip-enhanced wavelength selective switch (EWSS) in multipass add/drop experiments. The demonstrated EWSS device uses a ring-assisted Mach-Zehnder interferometer chip as a wavelength interleaver, to preprocess the incoming super channel before launch into a commer...
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Published in: | Journal of lightwave technology 2016-04, Vol.34 (8), p.1824-1830 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We investigate the performance of a chip-enhanced wavelength selective switch (EWSS) in multipass add/drop experiments. The demonstrated EWSS device uses a ring-assisted Mach-Zehnder interferometer chip as a wavelength interleaver, to preprocess the incoming super channel before launch into a commercial wavelength selective switch. We show that a 4% guardband, quadrature-phase-shift-keying encoded Nyquist wavelength division multiplexing super channel can successfully pass through seven EWSS nodes. We further investigate the number of reachable nodes with varied guardbands, showing that a modest increase in guardband can translate to a significant increase in the number of reachable EWSS nodes. |
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ISSN: | 0733-8724 1558-2213 |
DOI: | 10.1109/JLT.2016.2518200 |