Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

Fiber Optics Upgrades Cryptography

Facebook Twitter LinkedIn Email Comments
An autocompensating quantum cryptography technique based upon manipulating a pulse of light split into equal orthogonally polarized components has received a significant upgrade with the integration of fiber optics into the coding/decoding process.

Designed by IBM's Almaden Research Center in San Jose, Calif., the technique previously used bulk optics to generate coded information at approximately 200 b/s with a 5 percent bit error rate. As reported in the March 20 issue of Applied Optics, the replacement of these optics with fiber technology produced a speed of 1.5 kb/s with a 1.5 percent bit error rate -- attributed largely to a reduction in noise from backscattering and signal attenuation.

Photonics Spectra
Jun 2002
fiber opticsResearch & TechnologyTech Pulse

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

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.