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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 21 — Nov. 1, 2006
  • pp: 3104–3106

Polarization beam splitter based on a photonic crystal heterostructure

E. Schonbrun, Q. Wu, W. Park, T. Yamashita, and C. J. Summers  »View Author Affiliations


Optics Letters, Vol. 31, Issue 21, pp. 3104-3106 (2006)
http://dx.doi.org/10.1364/OL.31.003104


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Abstract

The design and characterization of a photonic crystal (PC) polarization beam splitter (PBS) that operates with an extinction ratio of greater than 15 dB for both polarizations are presented. The PBS is fabricated on a silicon-on-insulator (SOI) wafer where the input and output ports consist of 5 μ m wide ridge waveguides. A large spectral shift is observed in the dispersion plots of the lowest-order even (TE-like) and odd (TM-like) modes due to the SOI confinement. Because of this shift, the TE-like mode is close to a directional gap at the top of the band, and the TM-like mode is in a low-frequency regime where the dispersion surface is almost isotropic. We show that the TE-like mode has very high reflection at the interface between the two PCs, whereas the TM-like mode exhibits a very high transmission.

© 2006 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.5440) Optical devices : Polarization-selective devices
(230.7400) Optical devices : Waveguides, slab

ToC Category:
Integrated Optics

History
Original Manuscript: May 31, 2006
Manuscript Accepted: August 4, 2006
Published: October 11, 2006

Citation
E. Schonbrun, Q. Wu, W. Park, T. Yamashita, and C. J. Summers, "Polarization beam splitter based on a photonic crystal heterostructure," Opt. Lett. 31, 3104-3106 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-21-3104


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References

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