基于大规模集成光学芯片的新型可调谐锁模光纤激光器的研制

项目名称： 基于大规模集成光学芯片的新型可调谐锁模光纤激光器的研制

项目编号： No.61275052

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 陈根祥

作者单位： 中央民族大学

项目金额： 80万元

中文摘要： 可调谐锁模激光器在大容量光通信系统、超快光学测量、光学相控阵雷达和光传感等方面具有极其重要的应用价值，是当前光电子技术领域的一个研究热点。如何利用技术成熟的光学部件研制出具有高度性能稳定性和使用灵活性的可调谐锁模激光器是目前锁模技术大规模实际应用所急需解决的问题。本项目首次提出将技术相当成熟的大规模集成光学芯片（opto-VLSI）应用于具有高度稳定性、波长和输出脉冲重复率均可调谐的锁模光纤激光器的研制。器件通过对电寻址opto-VLSI的编程控制实现对激光器输出波长和输出脉冲宽度的连续调谐；利用一小段非线性光子晶体光纤中的偏振旋转效应实现锁模；通过在腔内插入电控可变衰减器对谐波锁模级次和输出脉冲重复频率进行调谐；利用压电效应实现对谐振腔光学长度和基频的锁定以抑制激光器的频率漂移和功率波动；器件采用全保偏结构以提高稳定性并避免偏振控制器等不成熟部件。最终研制出结构新颖、性能稳定的实验样机。

中文关键词： 锁模激光器；可调谐光纤激光器；大规模光学集成芯片；光学滤波；波长选择开关

英文摘要： Tunable mode-locked lasers have many important applications in large capacity optical communication systems, ultra-fast optics, optical phased-array radar, and optical sensor, and become a hot research topic in optoelectronic area in resent years. The fabrication of stable and flexable tunable mode-locked lasers based on robust commercial available optical components is an urgent requirement for its large-scope field applications. In this project, a novel high stable structure for wavelength and repetition rate tunable mode-locked fiber laser based on mature commercially available opto-VLSI chip was proposed for the first time. The output wavelength and the pulse width can be tuned by program control of the opto-VLSI state; The polarization rotation effect within a short segment of nonlinear photonic crystal fiber act as a mode-locker; The harmonic order and the repitition rate of the output pulse can be tuned by inserting a electrically tunable optical attenuator in the cavity; To suppress the frequency and power fluctuation of the output laser, the piezoelectricity effect is used to lock the optical length and the resonant frequency of the cavity; Except for the photonic crystal fiber, all the fiber used in the device is polarization maintained for enhancing the stability and avoiding the use of unstable optic

英文关键词： Mode-locked laser；tunable fiber laser；Opto-VLSI chip；optical filter；wavelength selective switch