基于116 GHz调谐范围的高精度频率可调单纵模DBR光纤激光器  

High-Precision Frequency-Tunable Single-Longitudinal-Mode DBR Fiber Laser for a Tuning Range of 116 GHz

作　　者：杨秀梅 刘孝兵 李重阳 潘浩 薛驷明 毛庆和 Yang Xiumei;Liu Xiaobing;Li Chongyang;Pan Hao;Xue Siming;Mao Qinghe(School of Environmental Science and Optoelectronic Technology,University of Science and Technology of China,Hefei 230026,Anhui,China;Anhui Provincial Key Laboratory of Photonics Devices and Materials,Anhui Institute of Optical and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Science,Hefei 230031,Anhui,China;Advanced Laser Technology Laboratory of Anhui Province,Hefei 230037,Anhui,China)

机构地区：[1]中国科学技术大学环境科学与光电技术学院,安徽合肥230026 [2]中国科学院合肥物质科学研究院安徽光学精密机械研究所光子器件与材料安徽省重点实验室,安徽合肥230031 [3]先进激光技术安徽省实验室,安徽合肥230037

出　　处：《激光与光电子学进展》2024年第21期273-279,共7页Laser & Optoelectronics Progress

基　　金：科技创新2030“量子通信与量子计算机”重大项目(1-2)。

摘　　要：研究了基于压电陶瓷(PZT)拉伸机构轴向拉伸分布布拉格反射(DBR)光纤谐振腔的单纵模DBR光纤激光器的可控频率调谐特性和激光输出特性。理论分析表明,该调谐方案可有效缓解频率调谐过程中的跳模,利于获取更宽的无跳模频率调谐范围。实验验证了这种调谐机制可以对DBR光纤激光器实施快速、可控的大范围无跳模频率调谐,获得的最大无跳模频率调谐范围高达116 GHz。在频率调谐过程中,激光输出线宽和相对强度噪声的变化量不大,输出激光功率的较大波动可利用后接的光纤放大器有效抑制。In this paper,the controllable frequency-tuning and laser output characteristics of a single-longitudinal-mode distributed Bragg reflector(DBR)fiber laser with a piezoelectric ceramic that axially stretches across a DBR fiber resonant cavity are investigated.Our theoretical analysis shows that this tuning scheme can effectively prevent the occurrence of mode hopping during frequency tuning,which is beneficial for obtaining a wider frequency-tuning range without mode hopping.Additionally,experimental results verify that this tuning mechanism can achieve fast and controllable frequency tuning of the DBR fiber laser over a wide range without mode hopping.The maximum mode-hop-free frequency-tuning range obtained in our experiment is as high as 116 GHz.During the frequency-tuning process,changes in the linewidth and relative intensity noise of the laser are not significant;furthermore,large fluctuations in the output laser power can be effectively suppressed using a boost fiber-optic amplifier.

关 键 词：光纤激光器 分布布拉格反射 光纤布拉格光栅 单纵模 频率调谐 压电陶瓷 

分 类 号：TN248[电子电信—物理电子学]