Aswini Kumar Mallick

TL;DR: In this article, simple and complete empirical relations are presented to determine a normalized spot size in terms of normalized frequencies over a long range and aspect ratio of a trapezoidal index single-mode fiber considering Gaussian approximation of the fundamental mode following the Marcuse method for the first time.

TL;DR: In this article, the fiber tip based hyperbolic microlens coupling efficiency of circular core trapezoidal index single mode fiber and a laser diode was theoretically studied and the corresponding analytical expressions were formulated considering ABCD matrix for hyper bolic micro-lens following paraxial approximation and also Gaussian field distributions are considered for both the source and the fiber.

TL;DR: Based on the splice loss analysis between two perfectly aligned single mode step and trapezoidal index fibers, a simple empirical relation of power transmission coefficient in terms of normalised frequency and aspect ratio was proposed in this article.

TL;DR: In this paper, a detailed variational analysis of single-mode trapezoidal index fiber to investigate its propagation characteristics involving two simple approximations of fundamental mode is presented, and it is shown in respect of computation of normalized field that the single parameter variational function having Gaussian and modified Bessel variations in the core and cladding, respectively, is more accurate in comparison with the Gaussian function over a wide range of values of normalized frequency and aspect ratio.

TL;DR: In this paper, the authors investigate the nonlinear propagation characteristics of single mode trapezoidal index fibers involving the exact numerical linear and nonlinear spot sizes and their relative change with respect to aspect ratio.