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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 8 — Apr. 9, 2012
  • pp: 8256–8269

Analytical calculation of nonreciprocal phase shifts and comparison analysis of enhanced magneto-optical waveguides on SOI platform

Haifeng Zhou, Jingyee Chee, Junfeng Song, and Guoqiang Lo  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 8256-8269 (2012)

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Transfer matrices for one-dimensional (1-D) multi-layered magneto-optical (MO) waveguides are formulated to analytically calculate the nonreciprocal phase shifts (NRPS). The Cauchy contour integration (CCI) method is introduced in detail to calculate the two complex roots of the transcendental equation corresponding to backward and forward waves. By virtue of perturbation theory and the variational principle, we also present the general upper limit of NRPSs in 1-D MO waveguides. These analytical results are applied to compare silicon-on-insulator (SOI) based MO waveguides. First, a three-layered waveguide system with MO medium is briefly examined and discussed to check the validity and efficiency of the above theory. Then we revisited the reported low-index-gap-enhanced NRPSs in MO waveguides and obtained substantially different results. Finally, the potential of common plasmonic waveguides to enhance the nonreciprocal effect is investigated by studying different waveguides composed of Metal, MO medium and dielectrics. Our study shows that the reasonable NRPSs can be optimized to some extent but not as much as claimed in previous publications.

© 2012 OSA

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(230.3810) Optical devices : Magneto-optic systems
(230.4170) Optical devices : Multilayers
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Integrated Optics

Original Manuscript: January 4, 2012
Revised Manuscript: January 26, 2012
Manuscript Accepted: January 26, 2012
Published: March 26, 2012

Haifeng Zhou, Jingyee Chee, Junfeng Song, and Guoqiang Lo, "Analytical calculation of nonreciprocal phase shifts and comparison analysis of enhanced magneto-optical waveguides on SOI platform," Opt. Express 20, 8256-8269 (2012)

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