Evaluation of the effect of polymer coating on the lateral pressure tuning of fiber Bragg gratings

Paul, J.; Zhao, L. P.; Ngoi, B. K. A.; Fang, Z. P.
June 2005
Applied Physics Letters;6/6/2005, Vol. 86 Issue 23, p231107
Academic Journal
We report the analysis of the expected effect of polymeric coating on the lateral pressure tuning of fiber Bragg gratings (FBGs). The dependence of the coating thickness and the stiffness of the polymer on the peak wavelength shift sensitivity and birefringence were evaluated using finite element analysis. A suitable polymeric coating with an optimum value of thickness could reduce the birefringence to an insignificant near-zero value and the peak shift sensitivity could be enhanced to almost ten times as high as that of bare FBGs.


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