Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

Planar Device Boosts Gratings-Based WDM Performance

Photonics Spectra
Dec 2002
Gratings-based wavelength-division multiplexers (WDMs) are simpler to fabricate but generally have lagged behind thin-film filters in performance. However, a compact planar device developed by physicists at Weizmann Institute of Science in Rehovot, Israel, could improve performance of gratings-based coarse WDM filters.

The device comprises several reflection volume phase gratings, each operating independently with a specific wavelength channel. In an article published in the Oct. 1 issue of Applied Optics, the researchers described the fabrication process and application of the devices in a four-channel demultiplexer operating near 800 nm. The technology delivered high, uniform channel efficiencies, worthy spectral profile cutoffs, low crosstalk and polarization independence. Alternate configuration designs could yield devices for use in 1550-nm systems.

Research & TechnologyTech Pulse

Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2018 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!