SPIE Newsroom features article by Biswas, Ho, et al.

The Internet is the driver for modern communication, transporting
an increasing density of data. Much of this is being carried
over optical fibers using wavelength division multiplexing
(WDM), in which multiple wavelengths are transported along
the same optical fiber. At different points on the fiber it is necessary
to pull off (drop) individual wavelength channels for endusers.
Simultaneously it is necessary to add data streams into
empty wavelength channels. Waveguides in two-dimensional
photonic crystals (PCs) and ring resonators have been extensively
investigated as all-optical add-drop filters. We show that
three-dimensional photonic band gap crystals with complete
band gaps can be novel add-drop filters.

To read the article, go to:   http://spie.org/x15275.xml?highlight=x2414

Biswas webpage: http://cmp.ameslab.gov/personnel/biswas/biswas.html

Ho webpage: http://www.cmpgroup.ameslab.gov/personnel/ho/