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Design and fabrication of SU-8 arrayed-waveguide gratings using multimode interference couplers

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An SU-8-based arrayed-waveguide gratings (AWG) device with multimode interference couplers (MMI) is designed and fabricated. The demonstrated MMI-AWG device has 4 channels and the channel spacing is 500GHz. The total insertion loss is about 22 dB, which mainly comes from the coupling loss (16dB) between the input/output waveguide and the fibers. The channel crosstalk between adjacent channels is about –12 dB which is close to the simulation result.

© 2010 Optical Society of America

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