Abstract

We designed and manufactured two types of a silica-based microstructured fiber (also referred to as holey fiber) having a large core size: first type which contains a circular core and correspondingly possesses the circular symmetry in the waveguide cladding, and second one representing non-typical triangular structure with periodically placed large and small holes. Our primary aim of investigation remained the same as at the previous stages [1], i.e. to create favourable conditions for the strong attenuation of the higher-order mode. The main technological method we applied was variation of air content in the area surrounding the core, especially in the first air-hole ring.

© 2011 Optical Society of America