RT - Journal Article T1 - Impact of curvature on PT-symmetry breaking in two curved optical waveguides JF - opsi YR - 2020 JO - opsi VO - 26 IS - 0 UR - http://opsi.ir/article-1-2137-en.html SP - 949 EP - 952 K1 - Parity-Time symmetry K1 - Periodically curved optical waveguides K1 - gain and loss. AB - In this work, we investigate the PT-symmetry breaking in two periodically curved optical waveguides. To this end, two curved optical waveguides with gain and loss are considered. Numerical results show that by increasing the curvature, PT-breaking transition occurs at higher values of gain/loss strength. LA eng UL http://opsi.ir/article-1-2137-en.html M3 ER -