Abstract
A new complete analysis of the effect of induced inner curvature on refractive index (RI) sensitivity in internally tilted long-period gratings (ITLPGs) is presented. The responses in terms of RI sensitivity of a standard LPG and different ITLPGs with curvature values between 15 and were compared. The analysis suggests first, that the larger the induced curvature, the greater the RI sensitivity; and second, that the RI sensitivity exponentially increases with both the curvature and cladding mode order. RI sensitivity greater than 100 nm can be attained with curvature greater than for mode. Conversely, the temperature sensitivity of ITLPGs is comparable to standard LPGs for the considered cladding mode order.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Fangcheng Shen, Changle Wang, Zhongyuan Sun, Kaiming Zhou, Lin Zhang, and Xuewen Shu
Opt. Lett. 42(2) 199-202 (2017)
Mateusz Śmietana, Marcin Koba, Predrag Mikulic, and Wojtek J. Bock
Opt. Express 24(11) 11897-11904 (2016)
Andrea Cusano, Agostino Iadicicco, Pierluigi Pilla, Luigi Contessa, Stefania Campopiano, Antonello Cutolo, and Michele Giordano
Opt. Lett. 30(19) 2536-2538 (2005)