Chinese Optics Letters, 2021, 19 (4): 041401, Published Online: Jan. 11, 2021
Wavelength-flexible all-polarization-maintaining self-sweeping fiber laser based on intracavity loss tuning Download: 671次
fiber laser self-sweeping effect bidirectional cavity flexible wavelength all-polarization maintaining
Abstract
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.
Kaile Wang, Zengrun Wen, Haowei Chen, Baole Lu, Jintao Bai. Wavelength-flexible all-polarization-maintaining self-sweeping fiber laser based on intracavity loss tuning[J]. Chinese Optics Letters, 2021, 19(4): 041401.