Fabrication of ultra-compact Er-doped waveguide amplifier based on bismuthate glass(<Feature>Glass and Ceramic Materials for Photonics)

概要

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Due to the possibility of high Er^<3+> doping and their broadband emission, the bithmuth-oxide-based glasses can be a promising candidate of host materials for a compact waveguide amplifier with high performance. By a novel fabrication process, we have developed a Bi_2O_3-based waveguide device with propagation loss as low as 0.13dB/cm, which is comparable to the silica-based waveguides. We have achieved an ultra-compact Er-doped waveguide amplifier with 1cm^2 size by designing a spiral lightwave circuit with low bending loss. This EDWA showed gain values over 15dB, noise figures lower than 8dB and gain flatness less than 2dB over the whole C-band region. The output power of this EDWA reached higher than 12 dBm.
社団法人日本セラミックス協会の論文
2008-10-01