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| 小信号脉冲抽运时掺铒光纤自发辐射的研究 | |
| 引用本文： | 王甫,吴重庆,刘岚岚. 小信号脉冲抽运时掺铒光纤自发辐射的研究[J]. 光学学报, 2012, 32(7): 706002-90 |
| 作者姓名： | 王甫 吴重庆 刘岚岚 |
| 作者单位： | 王甫:北京交通大学理学院发光与光信息技术教育部重点实验室 光信息科学与技术研究所, 北京 100044 吴重庆:北京交通大学理学院发光与光信息技术教育部重点实验室 光信息科学与技术研究所, 北京 100044 刘岚岚:北京交通大学理学院发光与光信息技术教育部重点实验室 光信息科学与技术研究所, 北京 100044 |
| 基金项目： | 国家自然科学基金(61077048,60907027)和北京市自然科学基金(4112042)资助课题。 |
| 摘 要： | 自发辐射(ASE)是掺铒光纤放大器(EDFA)的重要噪声源,对于由EDFA构成的光纤激光器有重要影响。理论与实践证明,它与抽运方式紧密相关,所以研究脉冲抽运时掺铒光纤(EDF)的自发辐射有重要的学术价值。同时,脉冲抽运对于EDFA锁模激光器的研究也有一定意义。从理论和实验两方面研究了小信号脉冲抽运时,抽运脉冲宽度和幅度对于EDF的自发辐射特性的影响,得到了小信号抽运时输出ASE噪声平均值的近似解析解。研究发现,小信号脉冲抽运时输出信号的幅度与抽运脉冲的宽度成正比。这个新现象可用于脉冲宽度的全光检测。 |
| 关 键 词： | 光通信 掺铒光纤 掺铒光纤放大器 脉冲抽运 自发辐射 全光脉宽测量 |
| 收稿时间： | 2012-02-04 |
Active Spontaneous Emission in Erbium-Doped Fiber with Small Pulse Pump |
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| Wang Fu Wu Chongqing Liu Lanlan. Active Spontaneous Emission in Erbium-Doped Fiber with Small Pulse Pump[J]. Acta Optica Sinica, 2012, 32(7): 706002-90 | |
| Authors: | Wang Fu Wu Chongqing Liu Lanlan |
| Affiliation: | Wang Fu Wu Chongqing Liu Lanlan(Key Laboratory of Education Ministry on Luminescence and Optical Information Technology, Institute of Optical Information,School of Science,Beijing Jiaotong Univesity,Beijing 100044,China) |
| Abstract: | The active spontaneous emission (ASE) is the important noise source for erbium-doped fiber amplifier (EDFA), affecting fiber laser based on the EDFA seriously. The theory and practice show that the ASE is closely related with pump methods, so the study on the ASE of erbium-doped fiber (EDF) under the condition of the pulse pumping has important scientific significance. What′s more, pulse pumping makes some sense to the mode-locked laser based on EDFA. The effects of pump pulse with different widths and amplitudes on the ASE are investigated by the theoretical and experimental methods. An approximate analytical solution of output ASE noise average is derived when pump signal is small. The results show that the output amplitude of ASE is proportional to the input width of pump pulse when the pump pulse is small. The new phenomena can be used for the all-optical measurement of a pulse width. |
| Keywords: | optical communications erbium-doped fiber erbium-doped fiber amplifier pulse pumping amplified spontaneous emission all-optical measurement of pulse width |
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