Close

Search

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

Study Determines Fiber’s Capacity

Facebook Twitter LinkedIn Email Comments
Though it won't happen anytime soon, physics eventually will halt the exponential growth of per-fiber bandwidth. A report by researchers at Lucent Technologies Inc.'s Bell Labs in Murray Hill, N.J., suggests that the capacity of an optical fiber in dense wavelength division multiplexing is limited by cross-phase modulation to 3 bits per second per hertz. The next-generation 40-Gb/s systems, which will feature 100-GHz spacing, will have a spectral efficiency of 0.4 bits per second per hertz.

Cross-phase modulation is a nonlinear effect caused by perturbations in the refractive index of the fiber by the modulated intensity of signals running through it. The use of hollow-core fiber and polarization-resolved detection can reduce this effect.

The researchers published their findings in the June 28 issue of Nature.

Photonics Spectra
Aug 2001
As We Go To PressBreaking NewsCommunicationsfiber opticsPresstime Bulletin

Comments
LATEST HEADLINES
view all
PHOTONICS MARKETPLACE
Search more than 4000 manufacturers and suppliers of photonics products and services worldwide:

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2021 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.