Thermo-Optic Phase-Profile Shaping of Bragg Gratings in Planar Silica Channel Waveguides

Thermo-Optic Phase-Profile Shaping of Bragg Gratings&nb

T. Pagel, T. Waterholter, H. Renner, J. Voigt, E. Brinkmeyer,
Thermo-Optic Phase-Profile Shaping of Bragg Gratings in Planar Silica Channel Waveguides
IEEE Photon. Technol. Lett. 22(12), pp. 902-904 (2010)

Abstract: Bragg gratings in planar channel waveguides equipped with arrays of heating elements on top of them are presented. The latter allow for applying user-defined temperature distributions along the gratings and thereby quasi-arbitrary changes of the phase of the coupling coefficient of the grating. In this way tunable second and higher-order dispersion compensators can be realized as well as tunable single- or multi-channel transmission filters.

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