Study on Gain-Clamped Wide-band Erbium-Doped Fiber and Waveguide Amplifiers
|關鍵字:||增益箝制;摻鉺光纖放大器;摻鉺波導放大器;波長多工;S-頻段;光纖布雷格光柵;Gain Clamping;EDFA;EDWA;WDM;S-band;fiber Bragg grating|
In this dissertation, we investigated the technologies for the gain-clamped wide-band Erbium-doped fiber amplifiers and Erbium-doped waveguide amplifiers. We proposed the wide band Erbium-doped optical amplifier modules and gain-clamped technologies for the optical amplifier modules to satisfy the requirements, such as a wide bandwidth, a high stable gain and high cost efficiency, of the broadband communication networks. In the research of gain-clamped wide-band Erbium-doped fiber amplifiers, we have proposed and experimentally investigated a C- to L-band gain-clamped optical amplifier module by cascading Erbium-doped fiber amplifiers and semiconductor optical amplifiers and using the backward optical feedback method. A gain-clamping and gain-flattening technique for Erbium-doped fiber amplifiers by the method of multiple backward lasing saturated tones has been also studied and demonstrated experimentally. Furthermore, the application of Erbium-doped fiber has been studied. A S-band fiber ring laser module using double-ring structure and Erbium-doped fiber as gain medium has been presented. In the research of gain-clamped wide-band Erbium-doped waveguide amplifiers, by the means of an optical feedback and the method of clamping the population inversion resulting from forward lasing, we propose a gain-clamped Erbium-doped Waveguide amplifier module. In addition, a S- to C-band optical amplifier module with a coupled-structure has also been proposed. The operation principles and theory of these devices have been illustrated and experimentally evaluated. Through proof of the experiments, these proposed technologies and optical amplifier modules could be effectively used in the broadband communication systems and are helpful to accelerate the development of the broadband communication systems.
|Appears in Collections:||Thesis|
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