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We propose a novel optical-switch architecture that can be compactly implemented with novel functional configuration. A highly-integrated 180×180 optical switch prototype is fabricated using PLC technologies and its good performance is experimentally confirmed.
The wavelength-tunable filter is a key device for creating colorless, directionless, and contentionless reconfigurable optical add–drop multiplexers. Although arrayed-waveguide gratings (AWGs) can realize compact and cost-effective tunable filters, crosstalk in wavelength-division-multiplexing systems increases as the frequency grid spacing decreases. To resolve this problem, we propose a tunable-filter...
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