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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 12 — Jun. 17, 2013
  • pp: 14146–14151

Integrated polarization beam splitter with relaxed fabrication tolerances

D. Pérez-Galacho, R. Halir, A. Ortega-Moñux, C. Alonso-Ramos, R. Zhang, P. Runge, K. Janiak, H.-G. Bach, A. G. Steffan, and Í. Molina-Fernández  »View Author Affiliations


Optics Express, Vol. 21, Issue 12, pp. 14146-14151 (2013)
http://dx.doi.org/10.1364/OE.21.014146


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Abstract

Polarization handling is a key requirement for the next generation of photonic integrated circuits (PICs). Integrated polarization beam splitters (PBS) are central elements for polarization management, but their use in PICs is hindered by poor fabrication tolerances. In this work we present a fully passive, highly fabrication tolerant polarization beam splitter, based on an asymmetrical Mach-Zehnder interferometer (MZI) with a Si/SiO2 Periodic Layer Structure (PLS) on top of one of its arms. By engineering the birefringence of the PLS we are able to design the MZI arms so that sensitivities to the most critical fabrication errors are greatly reduced. Our PBS design tolerates waveguide width variations of 400nm maintaining a polarization extinction ratio better than 13dB in the complete C-Band.

© 2013 OSA

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(230.5440) Optical devices : Polarization-selective devices

ToC Category:
Optical Devices

History
Original Manuscript: April 8, 2013
Revised Manuscript: May 8, 2013
Manuscript Accepted: May 23, 2013
Published: June 6, 2013

Citation
D. Pérez-Galacho, R. Halir, A. Ortega-Moñux, C. Alonso-Ramos, R. Zhang, P. Runge, K. Janiak, H.-G. Bach, A. G. Steffan, and Í. Molina-Fernández, "Integrated polarization beam splitter with relaxed fabrication tolerances," Opt. Express 21, 14146-14151 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-12-14146


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