Modeling and optimal design of Er~(3+)-Yb~(3+) co-doped phosphate glass amplifier at large signal operation

摘要

Er~(3+)-Yb~(3+) co-doped phosphate glass waveguide amplifier at large signal operation are theoretically studied. By solving the rate and optical power propagation equations describing the Er~(3+)-Yb~(3+) co-doped system, quantum conversion efficiency(QCE) at large operation are optimized. It is shown that improvement of Er~(3+)-concentration and increase of amplifier length can improve QCE, improvement of Yb~(3+)-concentration reduces QCE, the rate of 1～2 of Er~(3+)-Yb~(3+) co-doped concentration is available.