Test Featured Articles

LightCounting’s Kozlov predicts continued transceiver market growth

According to the July/August 2010 Lightwave magazine interview with Dr. Vladimir Kozlov, “Can the optical transceiver market sustain double-digit growth?,” the head of the market...

New approach aids advanced 40/100-Gbps modulation format characterization

By Laura Martínez and Enrique Pellejer Overview Derived from stimulated Brillouin scattering, the Brillouin optical spectrum analysis technique enables phase and amplitude measurements...

Measuring complex optical modulation in fiber

By Daniel van der Weide Overview This article reviews both sampling and real-time techniques for signal conversion, compares many of the current instruments for measurement of complex...

Characterizing advanced modulation formats using optical sampling

By François Robitaille Overview The shift to more complex modulation formats for high-speed communications means a change in the way designers and network managers measure signal...

Improving test reliability and throughput for multiport components

by Anette Zimmermann OVERVIEW While bandwidth rates rise, costs must continue to fall�including the cost to test. This is particularly true when testing such multiport components as multiplexers...

Answers at hand for 100-Gbps test challenges

by Meghan Fuller Hanna Overview It's hard to test phase-modulated signal formats with instruments designed for amplitude modulation. Help for technology developers may finally be on the way,...

A complete physical model for Gigabit Ethernet optical communication systems

By Asghar Gholami, Denis Molin, Pieter Matthijsse, Gerard Kuyt, and Pierre Sillard OVERVIEW Draka has developed a complete physical model for 10GbE communication systems using 850-nm VCSELs and...