Large-Mode-Area Polarization-Maintaining Ytterbium-Doped Photonic Crystal Fiber

Ytterbium doped large mode field polarization maintaining photonic crystal fibers can be divided into solid core photonic crystal fibers (including hollow core photonic bandgap type and total internal reflection type) and hollow core anti resonant fibers according to their structure. According to the polarization maintaining mechanism, they can be divided into stress birefringence type and geometric birefringence type (such as elliptical hole and microstructure asymmetry type). According to the doping method, they can be divided into whole core ytterbium doped type and local/layered ytterbium doped type.