Abstract

We demonstrate an ultra-broadband 16-channel mode division (de)multiplexer utilizing densely packed bent waveguide arrays (DPBWAs). The phase mismatch is realized by using bent waveguides with a different radius instead of changing the waveguide width. The proposed structure shows theoretical insertion losses (ILs) that are <0.1  dB and crosstalk (CT) that is <30  dB over a 100 nm wavelength range for all the channels. The fabricated device, which consists of a multiplexer, DPBWAs, and a demultiplexer, exhibits ILs that are <1  dB and crosstalk that is <20  dB over an 80  nm wavelength band.

© 2016 Optical Society of America

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