Relation between phase and group indices in anisotropic inhomogeneous guiding media
- 1 January 1977
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 67 (1), 124-126
- https://doi.org/10.1364/josa.67.000124
Abstract
A relationship is derived between phase and group indices of a mode in anisotropic inhomogeneous guiding media. The relation is applied to the modes in a three-layered biaxially anisotropic waveguide, and it is shown that there exists an upper bound to the group index.Keywords
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