1.”Twisted” light in optical fibers
[“Twisted” light has the potential to dramatically increase bandwidth of optical networks. Already researchers are using various wireless techniques such as phase quadrature phase shift modulation to achieve data rates in excess of 560 Gbps on a single wavelength in a DWDM system, and it is expected that data rates in excess of 1000 Gbps per wavelength will be possible soon. These techniques will work with existing DWDM networks and dramatically increase their bandwidth capacity to tens if not hundreds of terabits. Optical Orbital Angular Momentum (OOAM) has the potential to add an almost infinite number of phase states to the modulated signal and further increase the capacity to thousands of terabits. Up to now the challenge has been how to couple OOAM modulated signals into single mode fiber.
In summary, we have analyzed and verified the generation of an optical vortex carrying OAM directly in fiber starting with a fiber core mode for the first time to our knowledge. This is achieved by transferring OAM from an acoustic vortex
generated in the fiber. Analysis of the coupling coefficient of this acousto-optic interaction verifies independent conservation of spin and orbital angular momenta.
2. Truphone Brings Skype To iPhone & iTouch
[Now you can make skpe calls on your iTouch or Iphone using any Wifi networks and avoid expensive cell phone charges and long distance fees. Excerpt from the Gigaom web site—BSA]
Geraldine Wilson, who was recently appointed as the chief executive of Truphone, told me in a conversation earlier today that Truphone wants to “offer our users a comprehensive communications experience. We started out as a voice app but now we are broadening it to other applications.”
By doing so, Wilson and Truphone founder James Tagg believe that they will give Truphone users a reason to stay insider the application longer, creating more opportunities to make phone calls and bringing in much-needed revenues. “In a mobile environment it is hard to switch between different applications, and that is why we are creating a single application environment,” Tagg says.
3. New Internet-ready TVs put heat on cable firms
[Excerpts from Globe and Mail – BSA]
For years, technology companies have tried in vain to bring the Internet onto the screen at the centre of North American living rooms. Although TV shows have made the migration to the Web, to date, it has been a one-way road.
Now, a new breed of Internet-connected televisions is threatening to shake up both the technology and broadcasting industries while making millions of recently purchased high-definition TVs yesterday's news.
Yesterday, LG Electronics Inc. unveiled a new line of high-definition TVs at the Consumer Electronics Show in Las Vegas that will include software from Netflix Inc. – to allow users to download movies and television programs directly to their TVs over an Internet connection.
Mr. McQuivey said Internet-connected TVs will have truly arrived when we see a major Web video services like Hulu.com start taking viewers away from cable companies.
Hulu – a joint project of NBC Universal Inc. and News Corp., which is not yet available in Canada – is ad-supported and offers free on-demand videos, allowing users to watch popular U.S. programs at their convenience.
“[Cable companies] have the most to lose and it's their business model which is at greatest risk of redundancy in this transition,” said Carmi Levy, an analyst with AR Communications Inc. “Their consistent revenue stream will come under attack as new offerings come to the market. … It's similar to what the telephone companies have faced from voice over Internet telephony (VoIP), cellphones and free instant messaging tools.”
Bill St. Arnaud
- Bill St. Arnaud is a consultant and research engineer who works with clients around the world on a variety of subjects such as next generation Internet networks and developing practical solutions to reduce CO2 emissions such as free broadband and dynamic charging of eVehicles. He is an author of many papers and articles on these topics and is a frequent guest speaker. For more details on my research interests see https://www.researchgate.net/profile/Bill_Arnaud