Investigation on the Effect of Underwater Acoustic Pressure on the Fundamental Mode of Hollow-Core Photonic Bandgap Fibers

Table 1

Physical parameters of the investigated optical fiber [2, 6].

Region	HC-PBF
Core	Material: air; = 10.1 m
Clad	Air-silica honeycomb
	= 70 m, ,  m; = 3.5 m, = 92%
	Solid-silica clad
	= 120 m, = 72 GPa, = 0.17
Polymer coating	Material: acrylate; = 93.5 m, = 0.75 GPa, = 0.45

is Young’s modulus of each layer, is Young’s modulus of the silica, is Poisson’s ratio, is the diameter of each region, is the air hole diameter in the microstructured region, is the thickness of the acrylate coating, and , , and are used to describe the anisotropy of the microstructured area.