  Use of hot atomic vapor as a new tool for tracing the complex nature of light
has become a knowledge-based topic in recent years. In this paper, we examine
the polarization ellipse of the Bloch surface wave (BSW) through the effect of
a magnetic field on the coupling of these surface waves in BSW-hot atomic vapor
cell. For this purpose, we fabricate a one-dimensional photonic crystal-based
Bloch wave atom cell, where under different configurations of magnetic field,
polarization ellipse of Bloch surface waves has been recorded experimentally.
Our results indicate that by applying the magnetic field in different
directions, Faraday and Voigt, the characteristics of electromagnetically
induced transparency (EIT-like) of hybrid system change. We have used these
changes to redefine the geometry of Voigt and Faraday for evanescent waves, as
well as to measure the ratio of the components of the elliptical polarized
electric field. These characterizations can open new insight into the
miniaturized atomic field in high quality and low volumetric areas.
