The spectral properties of bended tilted fiber Bragg gratings

摘要

This paper presents the introduction about fiber periodic structures which have a ability to coupling light from fiber coreto cladding, their principles and applications. Paper also presents the detail description of particular example of TFBGspectral response for changes of fiber bending in range of curvature radius from 30 to 7 mm. The area of observedcladding mode resonances is changing due to strengthening of fiber curve with simultaneous core mode independencefor this quantity. The ghost mode which is resonance closest to Bragg mode wavelength also stands out withtransmission loss dependency from fiber bending which is also described.