Multipass Performance of a Chip-Enhanced WSS for Nyquist-WDM Sub-Band Switching

作者：Corcoran Bill^*; Zhu Chen^*; Schroder Jochen^*; Zhuang Leimeng^*; Foo Benjamin^*; Burla Maurizio^*; Beeker Willem P^*; Leinse Arne^*; Roeloffzen Chris G H^*; Lowery Arthur J^*

来源：Journal of Lightwave Technology, 2016, 34(8): 1824-1830.

DOI：10.1109/JLT.2016.2518200

• Nyquist wavelength division multiplexing (WDM)
• optical communications
• optical filters
• optical super channels
• optically routed networks
• photonic integration
• reconfigurable Add/drop multiplexing
• ring resonator
• wavelength selective 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 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.

• 出版日期2016-4-15