| 摘要 |
One aspect of the disclosure relates to an optical fiber having a cross-sectional profile including a plurality of guiding regions, each guiding region including a core configured to emit radiation having an emitted wavelength when pumped with pump radiation having a pump wavelength, a first cladding surrounding the core, and optionally, one or more additional claddings surrounding the first cladding. The core of each guiding region is configured to guide radiation of the emitted wavelength, and the core and the first cladding of each guiding region are together configured to guide radiation of the pump wavelength. The cross-sectional profile of the optical fiber also includes one or more barrier regions, the barrier regions configured to separate the guiding regions from one another, the barrier regions being configured to prevent radiation of the pump wavelength being guided by the core and the first cladding in each of the guiding regions from substantially coupling into another guiding region. |
