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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 3 — Feb. 1, 2013
  • pp: 293–295

Modified effective index method to fit the phase and group index of 3D photonic wire waveguide

Andrei Tsarev  »View Author Affiliations

Optics Letters, Vol. 38, Issue 3, pp. 293-295 (2013)

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A modified effective index method (MEIM), which correctly describes, in a 2D case, both the phase and the group indexes in a 3D photonic wire waveguide, is introduced in the Letter. The MEIM utilizes the combined index profile with two spatial parameters. The central part with wire index has the width of nearly a wire height, and it is responsible for the group index. The basic part has the width of 3D wire and the smaller refractive index Nb. Numerical experiments by finite-difference time-domain method of Fabry–Perot and asymmetric Mach–Zehnder interferometers constructed by silicon wires prove that the MEIM gives an excellent agreement (about 2%) with test 3D simulation in comparison with an about 40% error for the effective index method.

© 2013 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(230.7380) Optical devices : Waveguides, channeled
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

Original Manuscript: November 13, 2012
Revised Manuscript: December 15, 2012
Manuscript Accepted: December 21, 2012
Published: January 18, 2013

Andrei Tsarev, "Modified effective index method to fit the phase and group index of 3D photonic wire waveguide," Opt. Lett. 38, 293-295 (2013)

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