Single-mode grating reflection in all-solid photonic bandgap fibers inscribed by use of femtosecond laser pulse irradiation through a phase mask

摘要

Single-mode Bragg grating reflection has been achieved in all-solid photonic bandgap fibers by use of femtosecond laser pulse irradiation through a phase mask. The grating created is confined to the all-silica fiber core region and exhibits higher thermal stability than other type I femtosecond-pulse-induced gratings.