Study of Gain Flattened and Clamped Erbium-Doped Fiber Amplifier and Fiber Laser
| Autor: | Ting-Tsan Huang, 黃珽瓚 |
|---|---|
| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 In the first part of the thesis, we propose and investigate experimentally a gain-flattened and gain-clamped two-stage erbium-based fiber amplifier (EBFA) module. The maximum gain variations of ±0.8 and ±1.8 dB are observed in an operating range of 1530 to 1564 nm, when the input signal powers are 15 and ?{40 dBm, respectively. In a 25 dB dynamics input signal power range from ?{15 to ?{40 dBm over the operating range, the maximal gain difference of 2.7 dB is also retrieved at 1556 nm for the GF and GC erbium amplifier. In the second part of the thesis, We propose and demonstrate a tunable and stable single-longitudinal-mode (SLM) erbium fiber laser with a passive triple-ring cavity structure in S-band operation. The proposed laser is fundamentally structured by using three different lengths of ring cavities, which serve as the mode filters. When a mode-restricting intracavity fiber Fabry-Perot tunable filter (FFP-TF) is combined, the proposed resonator can guarantee a tunable and stable SLM laser oscillation. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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