Efficient silicon polarization rotator based on mode-hybridization in a double-stair waveguide

Efficient silicon polarization rotator based on mode-hybridization in a double-stair waveguide

We present a compact silicon polarization rotator (PR) based on mode-hybridization by breaking the cross-sectional symmetry of a double-stair waveguide. The device fabrication is fully compatible with the commonly used silicon photonics processes with no extra masks required. The dependence of devic...

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Veröffentlicht in:Optics express 2015-02, Vol.23 (4), p.3960-3970
Hauptverfasser: Xie, Anbang, Zhou, Linjie, Chen, Jianping, Li, Xinwan
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container_issue 4
container_start_page 3960
container_title Optics express
container_volume 23
creator Xie, Anbang
Zhou, Linjie
Chen, Jianping
Li, Xinwan
description We present a compact silicon polarization rotator (PR) based on mode-hybridization by breaking the cross-sectional symmetry of a double-stair waveguide. The device fabrication is fully compatible with the commonly used silicon photonics processes with no extra masks required. The dependence of device performance on the double-stair waveguide dimensions is investigated using FDTD simulations. Characterizations of the fabricated devices reveal that the 23-μm-long PR exhibits a polarization extinction ratio (PER) of >17 dB in the wavelength range of 1500-1540 nm. The maximum PER exceeds 30 dB at 1518 nm.
doi_str_mv 10.1364/OE.23.003960
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title Efficient silicon polarization rotator based on mode-hybridization in a double-stair waveguide
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