Photonics is the science of generating, controlling, and detecting photons. I have done my

post graduation in this field, more specifically; Opto-Electronics & Laser Technology.

Photons are discrete parcels of energy, which have dual nature – that of a particle and a wave.

Photonics as a field really began in 1960, with the invention of the laser, 

and the laser diode followed in the 1970s by the development of optical fibers

as a medium for transmitting information using light beams,

  and the Erbium-doped fiber amplifier. These inventions  formed the basis for the 

telecommunications revolution of the late 20th century, and

provided the infrastructure for the internet.

Photonics covers a huge range of science and technology applications, including:

laser manufacturing,

biological and chemical sensing,

medical diagnostics and therapy,

display technology,

optical computing.

Again, a category wise application list of Photonics can be given as follows:-

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