Lorenzo Tunesi,1 Ihtesham Khan,1 Muhammad Umar Masood,1 Enrico Ghillino,2 Andrea Carena,1 Vittorio Curri,1 Paolo Bardellahttps://orcid.org/0000-0003-1075-82641
1Politecnico di Torino (Italy) 2Synopsys, Inc. (United States)
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We propose a novel modular photonic integrated Wavelength Selective Switch (WSS) based on a reconfigurable optical multiplexer architecture, capable to operate over the S+C+L bands and scalable. The densely integrated solution takes advantage of an input stage with grating assisted contra-directional couplers to separate channels in the three considered communication bands, followed by a cascade of two-stage ladder ring resonators, to separating each transmitted channel. A final switching stage routes the signal to the desired output fiber, with a cascade of thermally controlled Mach-Zehnder interferometers. The transmission penalty of the proposed solution has been evaluated in a coherent transmission scenario.
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Lorenzo Tunesi, Ihtesham Khan, Muhammad Umar Masood, Enrico Ghillino, Andrea Carena, Vittorio Curri, Paolo Bardella, "Photonic-integrated wavelength selective switch for S+C+L applications," Proc. SPIE 12417, Optical Components and Materials XX, 124170X (14 March 2023); https://doi.org/10.1117/12.2650360