Polarization rotator based on silicon wire waveguides

Polarization rotator based on silicon wire waveguides

We describe a polarization rotator based on an off-axis double-core structure consisting of a silicon wire waveguide and a silicon-oxinitride waveguide. The rotator can be made by planar fabrication technology and do not require complex processes, such as three-dimensional structure formation. A rot...

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Veröffentlicht in:Optics express 2008-02, Vol.16 (4), p.2628-2635
Hauptverfasser: Fukuda, Hiroshi, Yamada, Koji, Tsuchizawa, Tai, Watanabe, Toshifumi, Shinojima, Hiroyuki, Itabashi, Sei-ichi
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container_end_page 2635
container_issue 4
container_start_page 2628
container_title Optics express
container_volume 16
creator Fukuda, Hiroshi
Yamada, Koji
Tsuchizawa, Tai
Watanabe, Toshifumi
Shinojima, Hiroyuki
Itabashi, Sei-ichi
description We describe a polarization rotator based on an off-axis double-core structure consisting of a silicon wire waveguide and a silicon-oxinitride waveguide. The rotator can be made by planar fabrication technology and do not require complex processes, such as three-dimensional structure formation. A rotator with 35-microm long provides the polarization rotation angle of 72 degrees and the polarization extinction ratio of 11 dB with the excess loss of about 1 dB. Our polarization rotator represents a significant step towards accomplishing an optical circuit with polarization diversity based on silicon wire waveguides.
doi_str_mv 10.1364/oe.16.002628
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title Polarization rotator based on silicon wire waveguides
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