Compact 3-dB tapered multimode interference coupler in silicon-on-insulator.
We have fabricated a compact 3-dB multimode interference coupler with a large silicon-on-insulator cross section. To reduce the length of the usual symmetric interference multimode interference coupler, we propose using a parabolically tapered structure. The length of the device is 398microm . The device has a uniformity of 0.28 dB.
H
H
Wei
J
J
Yu
X
X
Zhang
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Z
Liu