中国激光, 2009, 36 (3): 668, 网络出版: 2009-03-17  

基于啁啾莫尔光栅的可调波长掺铒光纤环腔激光器

Wavelength-switchable erbium-doped fiber ring laser employing a chirped Moiré fiber grating
作者单位
Institute of Lightwave Technology, Beijing Jiaotong University, Bejing 100044, China
摘要
提出一种基于啁啾莫尔光纤光栅(CMFG)和掺铒光纤放大器(EDFA)的可调多波长激光器,其结构简单、降低了成本,并实验验证了室温下稳定的激光输出。作为波长选择器件,啁啾莫尔光栅具有优良的梳妆滤波特性,包括稳定的信道间隔、超窄的通带带宽,而且制作方法简单灵活。实验测得的光信噪比达到50dB,在一个小时的观测时间内,各波长激光输出的功率抖动均小于0.5dB,各信道的输出功率均衡,差值小于1dB。讨论了优化该激光器输出性能的方法,并用实验结果证明了基于啁啾莫尔光栅激光器结构的优势。
Abstract
A simple and cost-effective wavelength-switchable fiber ring laser based on a chirped moiré fiber grating (CMFG) and an erbium-doped fiber amplifier (EDFA) is proposed, and stable wavelength lasing oscillations at room temperature is experimentally demonstrated. To serve as a wavelength selective element, the CMFG possesses excellent comb-like filtering characteristics including stable wavelength interval and ultra-narrow passband, and its fabrication method is easy and flexible. The measured optical signal-to-noise ratio reaches the highest value of 50 dB and the power fluctuation of each channel output is less than 0.5 dB within an hour. The output laser power of different channels is almost identical (difference of less than 1 dB) within the tunable range. Methods to optimize the laser performance are also discussed and the superiority of the CMFG is experimentally demonstrated.

鲁韶华, 许鸥, 冯素春, 简水生. 基于啁啾莫尔光栅的可调波长掺铒光纤环腔激光器[J]. 中国激光, 2009, 36(3): 668. Shaohua Lu, Ou Xu, Suchun Feng, Shuisheng Jian. Wavelength-switchable erbium-doped fiber ring laser employing a chirped Moiré fiber grating[J]. Chinese Journal of Lasers, 2009, 36(3): 668.

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