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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 3 — Feb. 6, 2006
  • pp: 1055–1063

Design of SiON-based grating-assisted vertical directional couplers

Vittorio M. N. Passaro and Goran Z. Masanovic  »View Author Affiliations

Optics Express, Vol. 14, Issue 3, pp. 1055-1063 (2006)

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In this paper, we present the design of a SiON-based grating-assisted codirectional coupler for dissimilar waveguides, based on an accurate numerical method. All the design parameters, including coupling length and coupling efficiency, have been calculated at the free-space optical wavelength of λ =1.54 μm for both TE and TM polarisations as a function of grating height, thickness of the coupled slabs, gap thickness between the two coupled planar waveguides. It is shown that efficient (up to 70%) and polarisation independent vertical couplers can be realised.

© 2006 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.3120) Integrated optics : Integrated optics devices
(160.3130) Materials : Integrated optics materials

ToC Category:
Integrated Optics

Original Manuscript: November 17, 2005
Revised Manuscript: January 13, 2006
Manuscript Accepted: January 22, 2006
Published: February 6, 2006

Vittorio Passaro and Goran Masanovic, "Design of SiON-based grating-assisted vertical directional couplers," Opt. Express 14, 1055-1063 (2006)

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  1. G. L. Bona, R. Germann, and B. J. Offrein, “SiON high-refractive-index waveguide and planar lightwave circuits,” IBM J. Res. Dev. 47, 239 (2003). [CrossRef]
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