Photo Anneli Larsson
Bengt O. Hallberg
Year 2026 marks my fiftieth anniversary in the field of photonics. After taking a break, I am teaching and giving lectures once again.
My first four contributions deal with fiber optic communication from 1976 onward. They are based on my own research and development and look toward the future.
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Lecture given on November 14, 2002.
What if the trendsetters had listened!
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Without the constant influx of photons from the Sun, life on Earth would not be possible.

Leader of the theme day on October 28, 1983 – STF's engineering program. Fiber optics had already begun spreading in STEM circles in Sweden in 1983.
It is important for us to continue researching and expanding our knowledge of photons.
They are responsible for transporting energy between different types of matter.
One application is information transfer in optical fibers and free space. More importantly, there is a constant influx of photons from the sun. Without this influx, life on Earth would not be possible.
The colors we see in the wavelength range we call light do not exist. It is our brains that create them!
My goal is to do two things: increase knowledge about photons and spread that knowledge more widely. I want to do this in both STEM circles and among the general public..
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