Abstract
A waveguide problem with a balance between loss and gain has been defined by one of the authors (H.-P. N.) in the COST 240, Working Group 2, to study the mode behaviour in the case of complex refractive index and to compare different approaches. This problem is many-layered in both senses of the word. We will not discuss the numerical aspects of finding all roots1 of the dispersion equation, we will give a quasi-analytic solution for the branching point of the dispersion diagram, define a new BPM benchmark test, and discuss the peculiar wave behaviour of this waveguide.
© 1996 Optical Society of America
PDF ArticleMore Like This
H.-P. Nolting, M. Gravert, H. J. W. M. Hoekstra, R. Stoffer, G. J. M. Krijnen, C. Sibilia, M. de Minicis, R. Pregla, and O. Conradi
IMB2 Integrated Photonics Research (IPR) 1998
Andrey A. Sukhorukov, Zhiyong Xu, and Yuri S. Kivshar
NTuC19 Nonlinear Photonics (NP) 2010
Jiamin Liu, Huawei Liang, Shuangchen Ruan, Min Zhang, and Hong Su
OF4A.5 Optoelectronic Devices and Integration (OEDI) 2014