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讨论了半导体光放大器中的带间效应 ,及载流子热效应、谱烧孔效应、双光子吸收以及超快非线性折射等带内效应对半导体光放大器的动态特性的影响 ,讨论了两种情况 :1)保持控制光波长不变而改变信号光频率 ,2 )保持控制光和信号光频率相同而同时改变它们的频率下半导体光放大器的增益、相位动态特性以及太赫兹光非对称解复用器的开关窗口特性。数值结果表明 ,为了得到较为平坦而窄的开关窗口 ,控制光波长应与信号光波长相同 ,且其与半导体光放大器增益谱中心波长的差值应该大一些。
The effects of band-gap effect, semiconductor thermal effect, spectrum hole burning effect, two-photon absorption and super-fast nonlinear refraction on the dynamic characteristics of semiconductor optical amplifiers are discussed. Two cases are discussed : 1) changing the signal light frequency while keeping the control light wavelength constant, 2) maintaining the gain, phase dynamics and the asymmetric terahertz demultiplexing of the semiconductor optical amplifier while keeping the control light and the signal light at the same frequency while changing their frequencies Switch window characteristics. The numerical results show that in order to obtain a relatively flat and narrow switching window, the wavelength of the control light should be the same as that of the signal light and the difference between the control wavelength and the center wavelength of the gain spectrum of the semiconductor optical amplifier should be larger.