Optical properties of the self-organized gratings in thin photosensitive waveguide AgCl films on a glass substrate, doped by Ag nanoparticles, in the case of simultaneous excitation of TE0 and TE1 modes are investigated. These gratings are a result of interference of the incident linear polarized He-Ne laser beam with the excited TEn-modes of the AgCl layer. The interference field patterns the re-distribution of the nanoparticles. Each excited mode generates its own grating. The self-organized gratings associated with the TE0 mode appear earlier than that of the TE1 mode. There is a competition between TE0-gratings and TE1-gratings for absorbing the nanoparticles, because their available amount is limited in the interaction area. The competition is due to the positive feedback of the light mechanism. Thus, the TE1-grating removes some Ag nanoparticles from the already generated TE0-grating, which forms some chiral complex building blocks of the gratings. The induced chirality leads to the induction and enhancement of optical activities in the samples. Longer exposure of the samples leads to the variation of induced optical chirality. Generation of the gratings increases anisotropy of the sample, which in turn enhances the chiroptical properties of the Ag/AgCl/Glass system. Changes in absorption spectra, induced dichroism, and induced optical gyrotropy of the samples are measured. Diffraction patterns of the exposed samples confirm the coexistence of TE0- and TE1-associated gratings and their competition. AFM images support the above-mentioned process. It is observed that longer exposure and perfect formation of the induced gratings accompany with the reduction of chiroptical property, due to the destruction of chiral complex silver nanoclusters.