Sensing characteristics of long-period fiber gratings in photonic crystal fiber imprinted by CO/sub 2/ laser

摘要

A long period fiber grating imprinted in a pure-silica PCF (photonic crystal fiber) by using CO/sub 2/ laser beams is presented. The sensitivities of the resonant wavelength under bending, strain, and temperature were measured to be +16.4 nm-m, -0.95 pm//spl mu//spl epsiv/, and +9 pm//spl deg/C, respectively.