The supercell- based orthonormal basis method is proposed to investigate the modal properties of the Bragg fibers. A square lattice is constructed by the whole Bragg fiber which is considered a supercell, and the periodical dielectric structure of the square lattice is decomposed using periodic functions (cosine). The modal electric field is expanded as the sum of the orthonormal set of Hermite-Gaussian basis functions based on the opposite parity of the transverse electric field. The propagation characteristics of Bragg fibers can be obtained after recasting the wave equation into an eigenvalue system. This method is implemented with very high efficiency and accuracy.
Original Publication Citation
Wang, Z., Ren, G.B., Lou, S.Q., Liang, W.J., & Guo, S.P. (2003). Compact supercell method based on opposite parity for Bragg fibers. Optics Express, 11(26), 3542-3549. doi: 10.1364/oe.11.003542
Zhi, Wang; Guobin, Ren; Shuquin, Lou; Weijun, Liang; and Guo, Shangping, "Compact Supercell Method Based on Opposite Parity for Bragg Fibers" (2003). Electrical & Computer Engineering Faculty Publications. 62.