Progress in erasable and permanent polymer based DFB-structures with multicolour tunable laser emission

Highly luminescent organic solid state media including molecular dye doped guest-host systems and novel conjugated polymers currently attract a lot of interest for application in photonic technology. We demonstrate organic so lid-state lasers with broadly and continuously tuneable mode emission (Delt a lambda = 40nm, FWHM < 1nm). Feed-back onto polymeric DFB-structures resul ts from dynamic and permanent photoinduced in-plane gratings. A "write and read " - technique for easy and low cost fabrication of single and multiple grating devices is presented. The combination and optimization of tuneable gratings with specific confinement features as from different waveguiding formats open-up new approaches in integrated optics.