Journal article
Single-mode regime in large-mode-area rare-earth-doped rod-type PCFs
In this paper, large-mode-area, double-cladding, rare-earth-doped photonic crystal fibers are investigated in order to understand how the refractive index distribution and the mode competition given by the amplification can assure single-mode propagation. Fibers with different core diameters, i.e., 35, 60 and 100 µm, are considered.
The analysis of the mode effective index, overlap, effective area, gain, and power evolution along the doped fiber provides clear guidelines on the fiber physical characteristics to be matched in the fabrication process to obtain a truly or effectively single-mode output beam.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2009 |
| Pages: | 54-60 |
| ISSN: | 15584542 and 1077260x |
| Types: | Journal article |
| DOI: | 10.1109/JSTQE.2008.2010265 |
| ORCIDs: | Lægsgaard, Jesper and Broeng, Jes |
Fiber lasers Guidelines Laser beams Manufacturing Optical fiber devices Photonic crystal fibers Photonic crystal fibers (PCFs) Photonic crystals Polymers Refractive index Thermal conductivity doping profiles fabrication process fibre lasers holey fibres laser beams laser modes light propagation optical double-cladding optical fibre cladding optical materials photonic crystal fibre photonic crystals rare earth metals rare-earth-doped fibers rare-earth-doped rod-type PCF refractive index refractive index distribution rod-type fibers single-mode output beam single-mode propagation single-mode regime size 100 mum size 35 mum size 60 mum
