Patent ID: 9146345
Filing Date: 2015-09-29
Classification: C03B,G02B

Abstract:
1. A photonic bandgap optical fiber comprising: a solid core having a diameter of 50 micrometers or greater; and a solid cladding including a plurality of nodes, each node having a diameter and each node being surrounded in the cross sectional direction of the fiber by a background material, the refractive index of the nodes being greater than the refractive index of the background material, the nodes being arranged with respect to one another so as to define a minimum pitch and a maximum pitch and to form a cladding lattice surrounding the solid core, the maximum pitch being large than the minimum pitch, the cladding lattice defining a plurality of first areas consisting of background material that are surrounded by multiple nodes and a plurality of second areas consisting of background material that are surrounded by multiple nodes, the first areas being larger than the second areas, the first areas and the second areas forming a pattern surrounding the solid core; the photonic bandgap fiber having an effective mode area of about 700 μm n n