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We address dissipative soliton formation in modulated PT-symmetric continuouswaveguide arrays composed from waveguides with amplifying and absorbingsections, whose density gradually increases (due to decreasing waveguideseparation) either towards the center of the array or towards its edges. Insuch a structure the level of gain/loss at which PT-symmetry gets brokendepends on the direction of increase of the waveguide density. Breakup of thePT-symmetry occurs when eigenvalues of modes localized in the region, wherewaveguide density is largest, collide and move into complex plane. In thisregime of broken symmetry the inclusion of focusing Kerr-type nonlinearity ofthe material and weak two-photon absorption allows to arrest the growth ofamplitude of amplified modes and may lead to the appearance of stableattractors either in the center or at the edge of the waveguide array,depending on the type of array modulation. Such solitons can be stable, theyacquire specific triangular shapes and notably broaden with increase ofgain-loss level. Our results illustrate how spatial array modulation thatbreaks PT-symmetry locally can be used to control specific location ofdissipative solitons forming in the array.

Edge and bulk dissipative solitons in modulated PT-symmetric waveguide arrays