Abstract
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 Er3+ and Yb3+ 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 mol.% Er2O3 and 5.0 mol.% Yb2O3 and 12.0 mol.% resp. 18.0 mol.% ZnO was optimized. This glass was evaluated as the most suitable material for integrated amplifiers in the 1 530–1 565 nm telecommunication band. Other samples were prepared with active channel waveguides and active planar optical power splitter Y with a splitting ratio of 1 × 2 by two-step ion-exchange 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 power 200 mW at 980 nm.
Highlights
Passive optical splitters are a common component of fiber optic transmission networks
The basis of the waveguide for the active optical splitter is a special silicate glass GZ4, where the diffusion waveguide itself is realized by a two-step ion exchange Na+-Ag+, which is immersed under the substrate surface with its entire volume
This paper reported on the research of active optical integrated structures made by ion exchange technology into glass substrates
Summary
Passive optical splitters are a common component of fiber optic transmission networks. An active optical splitter compensates for its losses caused by splitting the optical signal from N to N transmission paths. The aim of the research of active optical power splitters is to achieve at least a level of structure gain that corresponds to the losses caused by the split ratio and the insertion loss of the component itself. According to ITU-T G.671, the basic structure of the optical splitter with a 1 x 2 ratio can bring a maximum insertion loss of 4.0 dB into the optical path. The optical splitter structure with a split ratio of 1 x 64 can introduce a maximum insertion loss of 22.3 dB into the optical path (ITU-T,02/2012). The active channel waveguides, formed in novel types of silicate glasses (GZ4), doped with rare-earth elements and Zn were investigated. The amplification properties of the designed structures were studied and the differential gain was evaluated
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