Wavelength-flexible all-polarization-maintaining self-sweeping fiber laser based on intracavity loss tuning

• 作者: Kaile Wang Zengrun Wen Haowei Chen Baole Lu Jintao Bai
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: Lasers, Optical Amplifiers, and Laser Optics
• 页码范围: 39-43
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL202119.041401

摘要

We reported a wavelength-flexible all-polarization-maintaining self-sweeping fiber laser based on the intracavity loss tuning brought by the bent optical fiber.The bidirectional cavity structure achieved the self-sweeping effect due to the appearance of the dynamic grating in the active fiber with the spatial hole burning effect.Under this,a section of fiber was bent into a circle for adjusting the loss of the cavity.With a descending diameter of bent fiber circle,the sweeping range moves to the shorter wavelength and covers a wide range from 1055.6 to 1034.6 nm eventually.Both the initial wavelength of self-sweeping regime and the threshold of the fiber laser show exponential correlation with the diameter of the circular fiber.Our work provides a compact and low-cost way to achieve the broad wavelength-flexible self-sweeping operation.