We report wide wavelength tuning in a double-clad ytterbium-doped fiber laser. The laser cavity consists of an array of broadband high-reflection fiber Bragg gratings and a bulk grating as output coupler and wavelength selection element. The proposed fiber laser configuration combines low intra-cavity loss of fiber Bragg grating mirrors with wide wavelength tuning of bulk gratings.We demonstrate >70 nm wavelength tuning range, limited only by the available fiber Bragg gratings.
Alvarez-Chavez, J. A., Martinez-Rios, A., Torres-Gomez, I., & Offerhaus, H. L. (2007). Wide wavelength-tuning of a double-clad Yb3+-doped fiber laser based on a fiber bragg grating array. Laser physics, 4(12), 1-4. https://doi.org/10.1002/lapl.200710065