Charles Kao, inventor of Fibre Optic Technology, passed away. May he RIP.

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I am saddened to hear of the recent passing of Sir Charles Kuen Kao – the father of fibre optic technology, in 1962 *).  Professor Kao’s work allows millions of people all over the globe to stay connected. Thanx.

*) my physics teacher told us about the Invention of Fibre Optic Communication on wires of Glass in 1962.

jaap van till, TheConnectivist


Sir Charles Kuen Kao

A young Charles Kao became the driving force behind the idea of long distance communication using a single-mode optical fibre waveguide made of glass. The idea seemed impossible to most researchers at the time due to the poor optical characteristics of the best available glass material. He and George Hockham thoroughly investigated whether there were any fundamental limits and found none. The comprehensive results of this research were published in the paper which is now recognised as the very beginning of the optical fibre revolution. Charles then toured research labs around the world (e.g. USA. France, Japan) in an attempt to convince others of the idea, for he realised that it’s success would depend on the contributions of others.

The Vision Background

Charles Kuen Kao was born in Shanghai on the 4th of November 1933. He is a Chinese-born Hong Kong, American and British electrical engineer and physicist who pioneered in the development and use of fibre optics in telecommunications. He holds multiple citizenship of Hong Kong, the United Kingdom and the United States.

His family moved to Hong Kong in 1948 where he completed his secondary education, then moved to England in 1952 to do his undergraduate studies in electrical engineering at Woolwich Polytechnic (now the University of Greenwich), obtaining his Bachelor of Science degree.

Charles Kao at STC Woolwich

He joined Standard Telephones and Cables at Woolwich, pursuing research into microwave communications using Long Haul Microwave Waveguides. In 1965 he received his PhD degree in electrical engineering  from University College London (under Professor Harold Barlow) as an external student while working at Standard Telecommunication Laboratories (STL) in Harlow, Essex, England, the research centre of Standard Telephones and Cables. It is there that Kao did his first ground-breaking work as an engineer and researcher working alongside George Hockham, initially under the supervision of Alec Reeves.

In 1963 he had joined the team of people who were exploring possible ways of achieving optical communication, and he made some diligent notes summarising the whole situation at the time, and identifying the team members and their areas of expertise. These notes now reside in The Nobel Prize museum in Oslo, but copies can be viewed here:

Young Charles Kao’s notes from 1963: Set A & Set B

Photo of Charles Kao during visit to STL in 2002

Extensive details of his life are contained in his biography: A Time and A Tide – A Memoir – Charles K. Kao, with additional recent material added by Gwen Kao.

This is now available in eBook format

Alzheimer’s Disease

Sadly Charles was diagnosed with Alzheimer’s Disease in 2004 and his health has subsequently deteriorated. Gwen Kao cares for him and now runs The Charles K. Kao Foundation for Alzheimer’s Disease.

This charitable organization was founded in 2010 by Charles K. Kao and his wife, Gwen Kao. It is based in Hong Kong which is now their home. The Foundation aims to raise the public awareness of Alzheimer’s disease, educating the general public on brain healthcare strategies, enhancing care and support to Alzheimer’s patients, their families and caregivers. Words from Gwen Kao

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1 Response to Charles Kao, inventor of Fibre Optic Technology, passed away. May he RIP.

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