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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 18, Iss. 4 — Apr. 1, 2001
  • pp: 457–464

Electro-optically induced tilted phase gratings in waveguides

Mykola Kulishov, Pavel Cheben, Xavier Daxhelet, and Sebastien Delprat  »View Author Affiliations

JOSA B, Vol. 18, Issue 4, pp. 457-464 (2001)

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A new design for an electro-optically induced tilted phase grating inside a waveguide is proposed. The electric field and the refractive-index distribution induced inside a waveguide by voltage applied to two systems of interdigitated electrodes that are shifted with respect to each other are calculated rigorously on the basis of an original technique. The model accounts for the arbitrary electrode shift distance d(0d2l), where l is the electrode spatial period. It is shown that the proper choice of the shift can minimize the structure’s capacitance and consequently its time response. The refractive-index distributions are calculated for various schemes for application of electric potential and electrode position that demonstrate the possibility of switching the direction of the grating wave vector. It is shown how the concept can be use to build electro-optically controllable transmissive (long-period) and reflective (short-period) tilted gratings and couplers in both multilayered (transverse) and planar (lateral) configurations.

© 2001 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(160.2100) Materials : Electro-optical materials

Mykola Kulishov, Pavel Cheben, Xavier Daxhelet, and Sebastien Delprat, "Electro-optically induced tilted phase gratings in waveguides," J. Opt. Soc. Am. B 18, 457-464 (2001)

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