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Dispersion flattening in a w-fiber

A method for dispersion-flattening in double-clad single-mode optical fibers is presented. The chromatic dispersion over the wavelength range [1.25 µm, 1.60 µm] is minimized for a w-fiber and also for a triangular-index fiber with a depressed inner cladding. The constraint that the first higher order mode should appear exactly at 1.25 µm is imposed. The full vector solution of Maxwell’s equations

Approximate soft shadows on arbitrary surfaces using Penumbra wedges

Shadow generation has been subject to serious investigation in computer graphics, and many clever algorithms have been suggested. However, previous algorithms cannot render high quality soft shadows onto arbitrary, animated objects in real time. Pursuing this goal, we present a new soft shadow algorithm that extends the standard shadow volume algorithm by replacing each shadow quadrilateral with a

The Rudder of the Church : A Study of the Theory of Canon Law in the Pedalion

This thesis is a study of the theology of canon law in the Pedalion. The Pedalion (Πηδάλιον: ”rudder”) is a famous Greek Orthodox collection of canon law. It was printed in Leipzig 1800 by permission of the Holy Synod of the Ecumenical Patriarchate. St. Nikodemos Hagioreites and Agapios Leonardos were the authors. What is the theoretical foundation of canon law according to the Pedalion? How is th

RS(23,17) decoder for UWB

This paper presents the Reed-Solomon (RS) decoder for multiband OFDM(MB-OFDM) ultra-wideband(UWB). In UWB system, RS (23,17) code is adopted. To achieve high throughput and small area, two iterative Modified Euclidean (ME) blocks are proposed to work by turns in this paper. The architectures of syndrome block, ME block, Chien search block, Forney block are presented later in detail. At last, this