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A novel hollow-core Bragg fiber structure with quasiperiodic dielectric multilayer cladding is proposed in near infrared (NIR) transmission. We theoretically demonstrate that the low loss transmission range of the HE11 mode can be significantly broadened by 450 nm.
We demonstrate the theoretical analysis of the propagation properties in a hollow-core Bragg fiber that can be used in bio-sensing applications. Based on the Bragg fiber we propose a resonant sensor that operates on changes in the refractive index of aqueous solution placed inside the hollow-core. We investigate the confinement loss of the TE01 mode. The sensor spectral sensitivity and resolution...
We determine the optimal inner glass ring thickness and its dependence on the glass index in infrared PBGFs. We find that the optimal thickness is 0.04Lambda and the optimal index is as small as possible.
We calculate the minimum loss and maximum relative bandgap as a function of the air-filling factor in a photonic bandgap fiber for n=1.4 to 2.8. The maximum relative bandgap accurately indicates the lowest-loss air-filling factor.
We show that loss is minimized at an air-filling factor of 0.8 with a refractive index of 2.4 in photonic bandgap chalcogenide fiber (lambda = 4 mum). This air-filling factor also corresponds to the maximum relative bandgap
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