Abstract
We propose 2×2 and 4×4 general MMIs based on hybrid plasmonic waveguides, used for 90° mixers. With the length of 4.57μm/17.5μm for 2×2/4×4 MMI, both MMIs exhibit phase errors below 0.7°, transmission imbalances below 0.6dB.
© 2018 The Author(s)
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