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How Cool Is This?

October 8th, 2009 (04:04 pm)

current mood: contemplative

An old friend of my family just won the Nobel Prize for Physics. He worked with my father at ITT, back in Roanoke, and his daughter Amanda was one of my closest friends in high school. Our families actually owned a business together. I remember dinners at their house. They'd be discussing mathematics, and suddenly everyone would pick up the paper napkins and start scribbling equations on them. A very brainy family.

When I knew Charles Kao, his wife and my mom were not only co-business owners; they were also co-leaders of our Girl Scout Troop. Both families would come along on camping trips. So I guess I can say I knew a Nobel Laureate back when he was a Girl Scout! We understood at the time that he was a major figure in the world of applied physics. He was already known as the Father of Fiber Optic Communications. Now I guess he's known as a Nobel Laureate, as well.
Way, to go, Mr. Kao!

The following press release is from the Nobel Prize website at the Royal Swedish Academy of Sciences:


Nobel Prize
in Physics

Press Release

6 October 2009

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2009 with one half to

Charles K. Kao
Standard Telecommunication Laboratories, Harlow, UK, and Chinese University of Hong Kong"for groundbreaking achievements concerning the transmission of light in fibers for optical communication"

and the other half jointly to

Willard S. Boyle and George E. Smith
Bell Laboratories, Murray Hill, NJ, USA

"for the invention of an imaging semiconductor circuit – the CCD sensor"

The masters of light

This year's Nobel Prize in Physics is awarded for two scientific achievements that have helped to shape the foundations of today’s networked societies. They have created many practical innovations for everyday life and provided new tools for scientific exploration. In 1966, Charles K. Kao made a discovery that led to a breakthrough in fiber optics. He carefully calculated how to transmit light over long distances via optical glass fibers. With a fiber of purest glass it would be possible to transmit light signals over 100 kilometers, compared to only 20 meters for the fibers available in the 1960s. Kao's enthusiasm inspired other researchers to share his vision of the future potential of fiber optics. The first ultrapure fiber was successfully fabricated just four years later, in 1970.

Today optical fibers make up the circulatory system that nourishes our communication society. These low-loss glass fibers facilitate global broadband communication such as the Internet. Light flows in thin threads of glass, and it carries almost all of the telephony and data traffic in each and every direction. Text, music, images and video can be transferred around the globe in a split second.

If we were to unravel all of the glass fibers that wind around the globe, we would get a single thread over one billion kilometers long – which is enough to encircle the globe more than 25 000 times – and is increasing by thousands of kilometers every hour.

A large share of the traffic is made up of digital images, which constitute the second part of the award. In 1969 Willard S. Boyle and George E. Smith invented the first successful imaging technology using a digital sensor, a CCD (Charge-Coupled Device). The CCD technology makes use of the photoelectric effect, as theorized by Albert Einstein and for which he was awarded the 1921 year's Nobel Prize. By this effect, light is transformed into electric signals. The challenge when designing an image sensor was to gather and read out the signals in a large number of image points, pixels, in a short time.

The CCD is the digital camera's electronic eye. It revolutionized photography, as light could now be captured electronically instead of on film. The digital form facilitates the processing and distribution of these images. CCD technology is also used in many medical applications, e.g. imaging the inside of the human body, both for diagnostics and for microsurgery.

Digital photography has become an irreplaceable tool in many fields of research. The CCD has provided new possibilities to visualize the previously unseen. It has given us crystal clear images of distant places in our universe as well as the depths of the oceans.

Charles Kuen Kao, British and US citizen. Born 1933 in Shanghai, China. Ph.D. in Electrical Engineering 1965 from Imperial College London, UK. Director of Engineering at Standard Telecommunication Laboratories, Harlow, UK. Vice-chancellor, Chinese University of Hong Kong. Retired 1996.

Prize amount: SEK 10 million. Kao is awarded one half, Boyle and Smith share the other half.