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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.116  No.1358 (October) (2008)  >  pp.1134-1138

Journal of the Ceramic Society of Japan
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Fabrication of ultra-compact Er-doped waveguide amplifier based on bismuthate glass

Motoshi ONO1), Yuki KONDO1), Junichi KAGEYAMA1) and Naoki SUGIMOTO1)
1) Asahi Glass Co., Ltd. Research Center

  Due to the possibility of high Er3+ 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 Bi2O3-based waveguide device with propagation loss as low as 0.13 dB/cm, which is comparable to the silica-based waveguides. We have achieved an ultra-compact Er-doped waveguide amplifier with 1 cm2 size by designing a spiral light-wave circuit with low bending loss. This EDWA showed gain values over 15 dB, noise figures lower than 8 dB and gain flatness less than 2 dB over the whole C-band region. The output power of this EDWA reached higher than 12 dBm.

Waveguide amplifier, Bismuth, Er, Waveguide, EDW

Received: June 09, 2008
Accepted: September 11, 2008 , Published online: October 01, 2008
Copyright (c) 2008 The Ceramic Society of Japan



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