Light and photonics


Light and photonics

Light is the common denominator of new technologies, which are increasingly pushing ahead in energy saving each year in the form of new radiation sources based on light-emitting diodes (i.e. LED) and renewable energy sources in the form of solar cells.

Light penetrated into the field of medicine and living organisms, either as diagnostical or directly chirurgical tool in the form of lasers. The speed of light has been routinely used for information transmission via optical fibers.

In the 1990’s, the first photonic crystal fibers and the first LED with photonic structure were made. These show unique features and shift the possibility of optical components integration onto the chip. Moreover, new science fields started up as a consequence, e.g. silicon integrated nanophotonics, which leads to stunning miniaturization of optical and optoelectronic components with unique properties in addition.

Photonics, as a relatively new scientific discipline has gradually crystallized into a discipline on its own. It is based on the foundations of traditional scientific disciplines such as optics and electronics.

Prof. Ing. Dušan Pudiš, PhD., who is a physicist, microelectronics expert and a recognized expert in photonics from the Department of Physic at the Faculty of Electrical Engineering of the University of Žilina, has answered our question what does photonics bring today and what role does light play in it as well as in our society: “I feel like ever since the invention of the light bulb, light technologies arrive in waves. For example, the discovery of the laser and then the optical fiber was a watershed moment. Only the future will evaluate how big the contribution of photonic crystal from the age in which we live has been. Photonic crystal pushes the limits of existing optical technologies and is a significant step towards light technologies integrated on the chip.”

Not only current year 2015 will belong to light, as it is the International Year of Light, but long-term future is taking shape, where the technologies based on the principle of light will drive the development of society.

Interview with prof. Dušan Pudiš (in Slovak language)

Compiled by: Marta Bartošovičová

Photo: archive of prof. Dušan Pudiš

Translated by: Andrej Mišech

Video (in Slovak language)

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