Design and Parametric Study of Depressed Core Optical Fiber

Abstract

In this paper, the bending loss and the modal field distribution (MFD) of the depressed core optical fiber (DCOF) are investigated. The effect of optical and geometrical parameters on the bending loss, power confinement and MFD are examined in these fibers. Based on unique three layered structure of DCOF, the central air core, germanium silicate ring core, and silica cladding along with its mode transformation capability, we also demonstrated versatile applications in local area, wide area optical communication networks and tunable wavelength selective devices. Detailed design parameters and operation principles of the DCOF are discussed.