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Here Wiki says Narinder Singh Kapany is "father of fiber optics". Here source says Charles Kuen Kao is "father of fiber optics".

Who is the father of fiber optics: Charles Kuen Kao or Narinder Singh Kapany?

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    $\begingroup$ First, define "father." Are you interested in the first-to-patent, first-to-invent, or maybe the person most responsible for moving FO from lab curiosity to commercial product? $\endgroup$ – Carl Witthoft Jan 19 at 13:40
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It depends on, what they did.

Neither of them found the concept, but both made a lot of inventions/developments to make optical cables working.

Narinder Singh Kapany

He was the founder and chairman K2 Optronics Inc, and

published over 100 scientific papers and four books on opto-electronics and entrepreneurship.

Charles Huen Kao

created various methods to combine glass fibres with lasers in order to transmit digital data, which laid the groundwork for the evolution of the Internet.


Fibre optics was not a single, revolutionary development, instead it was the evolution of many small results. Both of them made many essential steps. This technology seems to have many fathers.

The possibility that it could work, was probably well known about from the development of the LEDs.

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