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Optical Engineering • Open Access

Compact silicon slot waveguide polarization splitter
Author(s): Anthony Katigbak; James F. Strother; Jie Lin

Paper Abstract

A compact slot waveguide polarization splitter based on the silicon (Si) material system is proposed and analyzed. The slot waveguide structure introduces significant beat-length differences for transverse electric and transverse magnetic polarizations at operation wavelength of 1.55 μm. The special self-imaging design with limited modes and weak second-mode excitation shortens the device length to <50 μm, while still delivering good performance. The polarization extinction ratio is 13 dB, and the excess loss is only 0.3 dB. The splitter also has a relaxed length tolerance of 550 nm. These attributes make it an excellent candidate for polarization diversity circuits and compact electronic-photonic integrated circuits.

Paper Details

Date Published: 1 August 2009
PDF: 3 pages
Opt. Eng. 48(8) 080503 doi: 10.1117/1.3200898
Published in: Optical Engineering Volume 48, Issue 8
Show Author Affiliations
Anthony Katigbak, Progress Energy (United States)
James F. Strother, Bucknell Univ. (United States)
Jie Lin, Bucknell Univ. (United States)

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