In this paper we present designs of fibers having non-zero positive, non-zero negative and near-zero ultra-flattened dispersion with small dispersion slope and ultra-large effective area over a wide spectral range. The designs consist of a concentric multilayer segmented core followed by a trench assisted cladding and a thin secondary core. The central segmented core helps in maintaining desire...

A nonzero dispersion shifted fiber design based on hole-assisted lightguide fiber is presented. The proposed fiber has low dispersion slope around -0.01 ps/nm(2)-km and small negative dispersion values over the wavelength range from 1530 to 1620 nm. It can be used as a transmission medium for a long-haul dense wavelength-division-multiplexed system.

In the proposed paper, we report chalcogenide As2Se3 glass Photonic Crystal Fiber (PCF) for dispersion compensating application and also demonstrate other dispersion properties (negative and zero dispersion) of As2Se3 glass PCF in different wavelength windows with hexagonal arrangement of air holes in the cladding using Improved Fully Vectorial Effective Index Method (IFVEIM).

Sticky-price models often suggest that relative price distortion is a major cost of in‡ation. We provide an intuition for this: Even at low rates, in‡ation strongly a¤ects price dispersion which in turn has an impact on the economy qualitatively similar to, and of the order of magnitude of, a negative shift in productivity. The utility cost of price dispersion is quanti…ed and its impact on opt...

We study theoretically the propagation of electromagnetic waves in an infinite and homogenous medium with both temporal and spatial dispersion included. We derive a partial differential equation connecting temporal and spatial dispersion to achieve negative group velocity. Exact solutions of the equation are found and shown to lead to the possibility of exciting constant negative group velocity...

Abstract Using a free, open‐source ray‐tracing program, photorealistic spectral images have been created to show how several prisms would appear in the real world if they were made with materials that negative index of refraction (metamaterials). The aim this work is provide students visual interpretation atypical behavior negative‐index and look at dispersion visible range such prisms, resulti...

The common and traditional method for dispersion compensation in optical domain is concatenating the transmit optical fiber by a compensating optical fiber having high-negative dispersion coefficient. In this paper, we take an opposite direction and show how an optical fiber with high-positive dispersion coefficient can also be used for dispersion compensation. Our optical dispersion compensati...