寬帶碲基摻鉺光纖放大器多信道增益競爭的仿真分析

對新型寬帶碲基摻鉺光纖放大器(EDTFA)多信道問的增益演變關(guān)系進(jìn)行了理論仿真。仿真結(jié)果表明：
EDTFA多信道問的增益存在著一個(gè)競爭過程，競爭的強(qiáng)弱取決于碲基摻鉺光纖內(nèi)的能級粒子數(shù)分布；當(dāng)上能級粒子數(shù)處于反轉(zhuǎn)分布態(tài)時(shí)，具有較大的發(fā)射截面與吸收截面差值的波長信道擁有相對較大的競爭優(yōu)勢，可獲得相對較高的信號增益；當(dāng)上能級粒子數(shù)處于未反轉(zhuǎn)分布態(tài)時(shí)，具有較大的發(fā)射截面與吸收截面比值的波長信道擁有相對較大的增益競爭優(yōu)勢。

The slmu[ation analyses on gain relations among multi—channels of novel broad—band erbium—doped tellurite—based fibet amplifier(EDTFA)are presented theoretically．The simulation re．suits show that there is a gain competitive process am ong multi—channels which relied on the energy state popuhtion distribution of EDTFA．W hen the upper state population is reversed，the channel with greater difference of emission and absorption cross--section has bigger signal gain due to its competitive advan--tage．When the upper state population is not reversed ，the channel with greater ratio of emission and ab~rption cross-section has greater competitive advantage．