Title :
Bragg gratings in 2 x 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response
Author :
Marin, E. ; Ghosh, R. ; Meunier, J.-P. ; Daxhelet, X. ; Lacroix, S.
Author_Institution :
CNRS, Univ. Jean Monnet, Saint-Etienne, France
Abstract :
We present a theoretical study on the effect of the angle of a tilted Bragg grating written in a 2/spl times/2 symmetric fused fiber coupler. Coupling coefficients and wavelength response curves show that the grating angle is critical in determining the behavior of the component. For a particular type of coupler, a tilt of 0.40 is sufficient to degrade component performance.
Keywords :
Bragg gratings; optical fibre couplers; optical fibre theory; symmetry; 2/spl times/2 symmetric fused fiber coupler; 2/spl times/2 symmetric fused fiber couplers; Bragg gratings; component performance; coupling coefficients; grating angle; theoretical study; tilted Bragg grating writing; wavelength response; wavelength response curves; Bragg gratings; Degradation; Fiber gratings; Filters; Optical fiber couplers; Propagation constant; Refractive index;
Journal_Title :
Photonics Technology Letters, IEEE
