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Experimental evaluation demonstrates an elastic dual-wavelength selective switch with 111 Gbps PAM-4 transmission, indicating scalable routing for optical networks.
We demonstrate an elastic multi-wavelength selective switch with up to two wavelength switching capability per crosspoint. We fabricated the switch in a silicon photonics foundry and demonstrated a 17 nm tuning range for ring resonators, with a mean path loss of 2.43 dB. This is a 70% reduction in path loss as compared to previous generations, and we demonstrate a high-speed pulse-amplitude-modulation-4 transmission at 111 Gbps through different paths of the switch.
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Khope et al. (2020) studied this question.
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