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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 12 — Jun. 17, 2013
  • pp: 14888–14894

Ultra-short Silicon-On-Insulator (SOI) polarization rotator between a slot and a strip waveguide based on a nonlinear raised cosine flat-tip taper

Guoqiang Chen, Lixue Chen, Weiqiang Ding, Fangkui Sun, and Rui Feng  »View Author Affiliations


Optics Express, Vol. 21, Issue 12, pp. 14888-14894 (2013)
http://dx.doi.org/10.1364/OE.21.014888


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Abstract

A design of ultra-short integrated polarization rotator (PR) with nonlinear and flat-tip tapers is demonstrated theoretically. Based on mode-evolution theory and three-dimensional (3D) finite-difference time-domain (FDTD) simulation, raised cosine profiled tapers are introduced and optimized in the transition region, which improve the polarized modes coupling and decrease the conversion length to 6 μm for the wavelength of 1.55 μm. Numerical simulations obtain extinction ratio of 32 dB and loss of 0.14 dB with practical material parameters. The method and result presented here can be extremely valuable for applications in polarization diversity circuits.

© 2013 OSA

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(230.5440) Optical devices : Polarization-selective devices

ToC Category:
Integrated Optics

History
Original Manuscript: April 23, 2013
Revised Manuscript: May 30, 2013
Manuscript Accepted: June 3, 2013
Published: June 14, 2013

Citation
Guoqiang Chen, Lixue Chen, Weiqiang Ding, Fangkui Sun, and Rui Feng, "Ultra-short Silicon-On-Insulator (SOI) polarization rotator between a slot and a strip waveguide based on a nonlinear raised cosine flat-tip taper," Opt. Express 21, 14888-14894 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-12-14888


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