Abstract
Abstract We report synoptically an investigation of design, fabrication and characterization of a new all-solid photonic bandgap fiber.
By introducing an index depressed layer around a high index core in every unit cell of photonic crystal cladding, a novelall-solid bandgap fiber is predicted to obtain low confinement and bend losses within low-order bandgaps. After optimizingthe structure parameters, we fabricate a batch of rods used for cladding cells, select a pure-silica rod for core cell andan inner-hexagonal jacket tube. We demonstrate an all-solid bandgap fiber with the transmission loss as low as 2 dB/km at1,310 nm and a bandwidth of over 700 nm within the first bandgap. The guiding properties are also measured, respectively,such as transmission spectrum, attenuation spectrum, bend loss, mode field intensity profile, and chromatic dispersion.
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