TY - JOUR TI - Resonant transmission line method for unconventional fibers AU - Boucouvalas, A.C. AU - Papageorgiou, C.D. AU - Georgantzos, E. AU - Raptis, T.E. JO - Applied Sciences (Switzerland) PY - 2019 VL - 9 TODO - 2 SP - null PB - MDPI AG SN - null TODO - 10.3390/app9020270 TODO - null TODO - We provide a very general review of the resonant transmission line method for optical fiber problems. The method has been found to work seamlessly for a variety of difficult problems including elliptical and eccentric core fibers as well as "holey" photonic crystal fibers. This new version has been shown to offer great versatility with respect to cases of unconventional, inhomogeneous index profiles. © 2019 by the authors. ER -