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A Library of Ultra-Compact Multimode Interference Optical Couplers on SOI

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5 Author(s)
Haifeng Zhou ; Institute of Microelectronics, Agency for Science, Technology and Research, Singapore ; Junfeng Song ; Chao Li ; Huijuan Zhang
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A library of compact multimode interference (MMI) couplers with MMI region widths ranging from 1.1 μm to 3.2 μm is presented for 220-nm silicon-on-insulator-based photonic circuits. By optimizing the MMI geometrical parameters and considering the Goos-Häanchen shift, insertion losses of lower than 0.1 dB with moderate experimental errors are achieved for 3-dB MMI power splitters at C band, with the power imbalance around 0.2 dB.

Published in:

IEEE Photonics Technology Letters  (Volume:25 ,  Issue: 12 )