Search Menu
Photonics Media Photonics Marketplace Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook

Optical Networks Seek Reconfigurable Add/Drop Options

Facebook Twitter LinkedIn Email Comments
Hector E. Escobar, Fujitsu Ltd.

The ability to add and drop wavelengths from dense wavelength division multiplexing systems is a key function. Accomplishing this task optically, rather than electrically, is an exciting challenge for photonics lightwave system developers.
Optical add/drop multiplexers, in the simplest of terms, add and drop wavelengths at intermediate points in a communications network. Ideally, these multiplexers would be capable of dynamic reconfiguration, which means operators could remotely add or drop any number of wavelengths, or change the network through software commands. This added flexibility would save operating and maintenance costs and improves network providersi response time.
Unfortunately, most optical add/drop multiplexers are not dynamically reconfigurable because the filters that perform the adding and dropping are hard-wired for specific wavelengths; changing wavelengths requires a hardware change. Two relatively new tunable filter technologies could change all that. One of them, acousto-optic technology, is ready for implementation.

Photonics Spectra
Dec 1998

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2020 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.