Inverse-designed arbitrary-input and ultra-compact 1 × N power splitters based on high symmetric structure.

Scientific Reports
Hansi MaJunbo Yang

Abstract

Based on high symmetric structure, we propose the arbitrary-input and ultra-compact 1 × 2 and 1 × 3 power splitters by utilizing inverse design method. These devices can realize the functionality of power splitting, when the optical field is launched from arbitrary port. The shapes of their structures are 3.8 μm-wide regular hexagon and 4.0 μm-wide regular octagon, respectively. By utilizing 3D fine difference time domain solutions, the simulated results indicate that the excess loss of the 1 × 2 power splitter is less than 1.5 dB from 1,500 to 1,600 nm, and the excess loss and crosstalk of the 1 × 3 power splitter are less than 1.9 dB and lower than - 15.5 dB over 100 nm bandwidth at the centered wavelength of 1,550 nm respectively. In addition, the tolerances to fabrication errors are also investigated.

References

Feb 8, 2013·Optics Express·Yi ZhangMichael Hochberg
Jun 6, 2013·Optics Express·Jesse Lu, Jelena Vučković
Jul 28, 2016·Optics Express·Louise F FrellsenLars H Frandsen
Feb 16, 2017·Optics Letters·Ke XuQinghai Song
May 13, 2017·Scientific Reports·Alexander Y PiggottJelena Vučković
May 3, 2018·Optics Express·Weijie ChangMinming Zhang
Jun 2, 2018·Optics Letters·Yingjie LiuQinghai Song
Jan 4, 2019·Nature Communications·Maksim KunitskiReinhard Dörner
Feb 6, 2019·Scientific Reports·Mohammad H TahersimaKieran Parsons

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