@incollection{Krčmařík13, author = {David Krčmařík and Mykola Kulishov and Radan Slavík}, title = {Long-Period Fiber Gratings in Active Fibers}, booktitle = {Current Trends in Short- and Long-period Fiber Gratings}, publisher = {IntechOpen}, address = {Rijeka}, year = {2013}, editor = {Christian Cuadrado-Laborde}, chapter = {5}, doi = {10.5772/53008}, url = {https://doi.org/10.5772/53008} }