There are actually fundamentally two probable reasons for that productive refractive index variation upon gentle irradiation: heating with the LiNbO3:Fe substrates and, consequently, from the LC in the microchannel, and director reorientation in the electrical field induced by light-weight within the LiNbO3:Fe substrates. might be consulted in Appendix B in https://gastonm157uxx2.wikidank.com/user