本論文將針對一個飽和吸收Q和增益雙切換之全摻鉺全光纖雷射系統來進行模擬，並分析如何提高其脈衝重覆率至100kHz以上。此雷射系統的結構是由980nm的連續波雷射激發全Er3+雷射並自動Q切換與增益切換。論文中有推導出一組雙波長光子微分方程式可以用來模擬分析在雙波長光子脈衝雷射系統內的雙波長光子、增益居量及吸收居量的相互關係，並探討調整激發能量、增益光纖與可飽和吸收體的長度、第一與第二共振腔的長度以及反射率對雙波長光子脈衝雷射系統脈衝重複率、脈衝寬度、脈衝功率峰值與脈衝能量的影響。

The purpose of the study is to simulate and analyze a 980-nm CW-pumped passively pulsed all-Er3+ all-fiber laser and maximize the pulsing repetition rate beyond 100kHz. The laser was saturable-absorber Q-switched at 1510 nm using the mode-field-area mismatch method with the saturable-absorber in an intra-cavity gain-switched at 1570 nm. A set of rate equations is established to model the interaction between the photons of two wavelengths and the populations of the gain and the absorber fibers. In the thesis, the variables of the pump power, the gain and SAQS fiber lengths, the resonator lengths and the reflectivity in relation to the outputs of the repetition rate, the pulse duration, the peak power and pulse energy were numerically simulated and discussed.

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