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90° optical hybrid with lower loss and higher balance based on a tapered 2×4 MMI coupler and a 2×2 MMI coupler

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Abstract

We propose an optimized 90° optical hybrid based on a tapered 2×4 MMI coupler and a 2×2 MMI coupler. Simulations indicate that the hybrid yields the excess loss and imbalance of 0.2dB and 0.06dB, respectively.

© 2017 Optical Society of America

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