Title :
UV trimming of fused fiber coupler spectral response: a complete model
Author :
Daxhelet, Xavier ; Lacroix, Suzanne
Author_Institution :
Dept. of Eng. Phys., Ecole Polytech., Montreal, Que., Canada
Abstract :
In this letter, we propose a complete model of the transmission change of fused tapered fiber couplers exposed to uniform UV light by using supermode propagation theory. The main contribution of this change is found to be a decrease of the supermode propagation constant difference. This effect is found to be more significant when supermodes become cladding modes. The model shows a good qualitative agreement with experimental results found in the literature.
Keywords :
diffraction gratings; optical communication equipment; optical fibre cladding; optical fibre couplers; optical fibre fabrication; optical fibre theory; UV trimming; cladding modes; complete model; fibre grating inscription; fused fiber coupler spectral response; fused tapered fiber couplers; optical fibre fabrication; supermode propagation constant difference; supermode propagation theory; transmission change; uniform UV light effects; Bragg gratings; Fiber gratings; Optical coupling; Optical fiber couplers; Optical fiber devices; Optical fiber theory; Optical fibers; Optical propagation; Propagation constant;
Journal_Title :
Photonics Technology Letters, IEEE
