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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 7 — Jul. 1, 2010
  • pp: 1359–1363

Self-collimating polarization beam splitter based on photonic crystal Mach–Zehnder interferometer

Yi Xu, Shun Wang, Sheng Lan, Xu-Sheng Lin, Qi Guo, and Li-Jun Wu  »View Author Affiliations


JOSA B, Vol. 27, Issue 7, pp. 1359-1363 (2010)
http://dx.doi.org/10.1364/JOSAB.27.001359


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Abstract

Due to different boundary continuity conditions, electromagnetic waves with transverse-magnetic and transverse-electric polarizations respond differently when they encounter dielectric interfaces. Based on this mechanism, we propose a self-collimating polarization beam splitter (PBS) constructed on a polarization-insensitive self-collimation photonic crystal. The splitting is realized on a Mach–Zehnder interferometer (MZI), through which the two polarizations can be separated by 90° with low cross talk. Both polarizations are self-collimated to eliminate the diffraction loss during the propagation. Furthermore, the out-of-plane scattering loss is suppressed since the PBS is operated in the first band. The wavelength bandwidth of the MZI-based PBS reaches about 100 nm at 1550 nm. Finally, the influences of interfaces on the performance of the PBS are discussed.

© 2010 Optical Society of America

OCIS Codes
(230.1360) Optical devices : Beam splitters
(230.5440) Optical devices : Polarization-selective devices
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Optical Devices

History
Original Manuscript: December 17, 2009
Revised Manuscript: May 10, 2010
Manuscript Accepted: May 10, 2010
Published: June 11, 2010

Citation
Yi Xu, Shun Wang, Sheng Lan, Xu-Sheng Lin, Qi Guo, and Li-Jun Wu, "Self-collimating polarization beam splitter based on photonic crystal Mach–Zehnder interferometer," J. Opt. Soc. Am. B 27, 1359-1363 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-7-1359

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