(Phys.org) -- Technology is helping communication companies merge telephone, television and Internet services, but a push to deregulate may leave some customers on the wrong side of the digital divide during this convergence, ...
Telecom
May 17, 2012
0
0
(PhysOrg.com) -- When an optical fiber is bent by 90° or more, the light begins to leak away, posing a problem for fiber optics communications. But by using special lenses that can bend light by not only 90°, but ...
Researchers in Europe have succeeded in presenting an integrated tuneable transmitter on silicon - the first time this has ever happened. This results are an outcome of the HELIOS ('Photonics electronics functional integration ...
Optics & Photonics
Mar 30, 2012
0
0
Fumio Futami at Tamagawa University, Quantum ICT Research Institute, announced the world first transmission of the stream cipher by Yuen 2000 protocol (Y-00) at the bit rate of 40 Gbit/sec over 120 km.
Optics & Photonics
Mar 6, 2012
0
0
In yet another astounding application of the "wonder material" graphene, scientists at the University of California, Berkeley discovered that it makes an excellent active media for optical modulators. Graphene-based modulators ...
Nanomaterials
Mar 1, 2012
0
0
(PhysOrg.com) -- Researchers from the NIST Center for Nanoscale Science and Technology and Purdue University have designed and fabricated an on-chip microresonator that converts continuous laser light into ultra-short pulses ...
Optics & Photonics
Jan 19, 2012
0
0
Nippon Telegraph and Telephone Corporation and NTT Communications Corporation have conducted 100 and 40Gbps transmission tests in real field environments using existing installed optical fiber, and have demonstrated for the ...
Telecom
Nov 24, 2011
11
0
(PhysOrg.com) -- Working separately on two different types of technology, two groups have developed a type of fiber cable capable of delivering over 100 terabits of data per second; several orders of magnitude higher than ...
(PhysOrg.com) -- With worldwide Internet data traffic increasing by 50 percent each year, telecommunications companies that handle this digital torrent must be able to economically expand the capacities of their networks ...
Optics & Photonics
Feb 28, 2011
2
0
University of Oregon scientists have invented a method to change the color of single photons in a fiber optic cable. The laser-tweaked feat could be a quantum step forward for transferring and receiving high volumes of secured ...
Optics & Photonics
Sep 30, 2010
1
0
