Cover Story

The development of optical-fiber cables and communications technology has undergone a dynamic revolution over the past decade. The most basic design of an optical fiber consists of silica cladding surrounding a silica core doped with... more>>


Using Color to Understand Light Transmission

Historically, physicists and engineers have always portrayed wave transmission using line diagrams in which the amplitude is shown as a function of time and distance. This sort of drawing tells us what is happening to the wave amplitude. However, waves are characterized by their phase as well as their amplitude, and these drawings tell us nothing about the phase evolution. The advent of modern computers with color monitors and inexpensive color printers allows us to solve this problem in a visually appealing way by using a periodic color map to portray phase information. We can also portray information about the local frequency, the phase derivative respect to time, using an aperiodic color map. We apply this approach to study light propagation in optical fibers. more>>

Color Management for the Desktop Darkroom

This article will focus on the digital color management needs of one specific type of user: the individual digital photographer printing on his or her own desktop printer. Such a user might be working, for example, to create digital files of reliable color to hand off to a commercial printer of magazines, books, brochures or advertising. The basic science behind color management, the technologies that make it possible and the practical considerations implicit in the creation of a desktop digital darkroom will all be explored. more>>


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