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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 5 — May. 1, 2008
  • pp: 747–753

Ultrasmall Si-nanowire-based polarization rotator

Zhechao Wang and Daoxin Dai  »View Author Affiliations


JOSA B, Vol. 25, Issue 5, pp. 747-753 (2008)
http://dx.doi.org/10.1364/JOSAB.25.000747


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Abstract

A polarization rotator based on asymmetrical Si nanowires is presented and optimized for high polarization rotation efficiency (almost 100%). The present polarization rotator has a very small conversion length ( 10 μ m ) and consequently becomes very compact. The analysis of the wavelength dependence shows the present polarization rotator has a broad bandwidth ( 120 nm ) for high conversion efficiency ( > 97 % ) . The tolerance to various fabrication errors is also numerically studied. To compensate the fabrication error, a postcompensation method is introduced by modifying the refractive index of the up-cladding.

© 2008 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(230.7370) Optical devices : Waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: November 9, 2007
Revised Manuscript: January 20, 2008
Manuscript Accepted: January 21, 2008
Published: April 18, 2008

Citation
Zhechao Wang and Daoxin Dai, "Ultrasmall Si-nanowire-based polarization rotator," J. Opt. Soc. Am. B 25, 747-753 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-5-747

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