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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 25 — Dec. 11, 2006
  • pp: 12401–12408

Ultrasmall polarization splitter based on silicon wire waveguides

Hiroshi Fukuda, Koji Yamada, Tai Tsuchizawa, Toshifumi Watanabe, Hiroyuki Shinojima, and Sei-ichi Itabashi  »View Author Affiliations


Optics Express, Vol. 14, Issue 25, pp. 12401-12408 (2006)
http://dx.doi.org/10.1364/OE.14.012401


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Abstract

We describe an ultrasmall polarization splitter based on a simple directional coupler consisting of silicon wire waveguides. The size is only 7×16 µm2, and the polarization extinction ratio is about 15 dB for a single coupler. A double-coupler structure improves the extinction ratio to over 20 dB. The excess loss is smaller than 0.5 dB for both types of device. In the device, the shape of the high-speed waveform is retained at any angle of polarization. Our polarization splitter represents a first step towards accomplishing an ultrasmall optical circuit with polarization diversity based on silicon wire waveguides.

© 2006 Optical Society of America

OCIS Codes
(230.1360) Optical devices : Beam splitters
(230.3120) Optical devices : Integrated optics devices
(230.5440) Optical devices : Polarization-selective devices
(230.7380) Optical devices : Waveguides, channeled

ToC Category:
Optical Devices

History
Original Manuscript: October 6, 2006
Revised Manuscript: November 24, 2006
Manuscript Accepted: November 28, 2006
Published: December 11, 2006

Citation
Hiroshi Fukuda, Koji Yamada, Tai Tsuchizawa, Toshifumi Watanabe, Hiroyuki Shinojima, and Sei-ichi Itabashi, "Ultrasmall polarization splitter based on silicon wire waveguides," Opt. Express 14, 12401-12408 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-25-12401


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References

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