Analysis of refractive index single mode optical fiber for fiber-to-the-home application

Abstract

A Comparative study of step-index and trench-assisted single mode fiber in terms of bending losses and mode field diameter is carried out. Trench- index fiber proved to be a potential candidate for fiber-to-the-home application. In this paper, we discuss about the design and analysis of step index profile (SIF) and trench index profile (TIF) in terms of bending performance. The bending and MFD response compare for both the profiles. Our own numerical and simulated results for each of the fibers are introduced together with pioneering works of other study groups in this area. In addition, limitations and potentials of the fibers are discussed. 2. Fiber with a Step-Index Profile A standard SIF design and modify for low bending loss and small MFD. The way to reduce the bending loss in optical fiber is to increase the refractive-index difference between core and cladding keep unchanged mode in the step-index profile shown in fig. 1 (a) step-index profile and (b) Cross section view of SIF, where ߂ଵ and r denotes the core-to- cladding relative refractive index difference and radius of the core, respectively.