首页>
外国专利>
Hollow core photonic bandgap optical fibres and methods of fabrication
Hollow core photonic bandgap optical fibres and methods of fabrication
展开▼
机译:中空光子带隙光纤及其制造方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A hollow core photonic bandgap optical fibre comprises a cladding having capillaries formed of struts joined at nodes arranged in a hexagonal array. The fibre has a hollow core formed by excluding nineteen capillaries from the centre of the array, which is bounded by a first ring of capillaries comprising corner capillaries next to corners of the core and side capillaries between the corner capillaries. The array has a core size ratio of 1.26 or above, defined as a ratio of the core diameter to the cladding diameter normalised to those of an undistorted hexagonal array; a first ring ratio between 0.55 and 2.50, defined as a ratio of the length of radial capillary struts of the first ring to the length of a strut in an undistorted array; and a core node spacing between 0.60 and 1.90, defined as a ratio of the core-side strut of the largest corner capillary to that of the smallest side capillary. A method of manufacturing a holey fiber by applying four different and progressively increasing pressures to each of the core, outer capillaries, corner capillaries and side capillaries is also claimed.
展开▼