Double glass and glass-air photonic crystal fibers

摘要

Most photonic crystal fibers are made by stacking rods and tubes of a single glass. It is universal procedure to create an air-glass perform which is drawn into a final fiber. It is difficult to obtain an air-glass structure with topology similar to design one in practice. An alternative approach is to replace air holes with glass micro-rods in the considered structures. Use of multicomponent glass allows obtaining a large contrast between microrods and background glass. As a result index guiding and photonic bandgap fibers can be fabricated. In this paper we compare properties of air-glass and double glass structures and report on fabrication double glass structures.