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We reported on the active channel waveguides, formed in novel types of silicate glasses, doped with rare-earth elements, and Zn were investigated. The silicate glass GZ4 with Er 3+ and Yb 3+ content was studied, and the best doping ratio was estimated about luminescent properties. The composition of the glass samples (GZ4) with the content of 0.25 at. % Er 3+ and 5.0 at. % Yb 3+ and Zn 4.0 at. % resp. 5.6 at. % Zn was optimized. This glass was evaluated as the most suitable material for integrated amplifiers in the telecommunication band of 1 530 -1 565 nm. Other samples were prepared with an active channel waveguides and active planar optical power splitter Y with a splitting ratio of 1x2 by two-step ionexchange Na + -Ag + . Diffusion profiles of the created samples were analyzed by the EMA microscope and compared with the near mode-field distribution measurement results. Afterward, the amplification properties of the designed structures were studied, and the differential gain from 1.2 to 1.6 dB (0.48 to 0.64 dB/cm) was achieved by pumping 200 mW at 980 nm.

Our work presents research of the optical Ge-Si glass composition doped with Er3+, Yb3+ ions and Bi optically active centers (BACs), which are useful for optically amplifiers for a double C- and U-band. The luminescence response in the 1500 – 1700 nm range was tested with various types of glass with different content of modifier and activators in the 1500 – 1700 nm range. The maxima of the luminescence intensity and the spectral full width were determined by modified reflex spectrum method measurement. The prepared Ge-Si glass doped with Er3+ ions and BACs exhibited strong and balanced emission in the 1520 – 1680 nm range after pumping at 1480 nm. The specific balanced optical differential gain of up to 0.2 dB/cm in the C-band and simultaneously 0.2 dB/cm in the U-band was measured. The measured results prove that the investigated germano-silicate glasses doped with Er3+ and Bi ions are promising for optical amplifiers working in the optical C- and U-bands.

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