T. Okumura, S. Nakatsuka, K. Oda, J. Kasai, Y. Suwa, M. Sagawa, T. Ido
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Investigation of carrier-density dependent transmission properties with Germanium waveguides
Optical propagation characteristics of unintentionally doped and n-type doped Ge waveguides were investigated to achieve tasing operation (if the Ge laser. An n-type doped Ge waveguide showed significant reduction of its propagation loss under optical pumping.