What is photonics?
Photonics is a wide study area that includes research and application of light in all its many forms. The field is not only interested in the spectrum of visible light; Ultraviolet light and infrared light are also very important. The photonics field was originally focused on the application of light on tasks that could only be solved by electronics, such as telecommunications. Modern fields try to continue this effort and expand to it by searching for any light applications. Photonics draw and contribute to several other fields such as quantum electronics and modern optics.
There are many aspects of light and its behavior that are important for those who study photonics for scientific or industrial purposes. For example, light transmission is important due to the need for efficient and reliable data movement to and from remote places. Optical fiber cables are often used for this purpose. Lighting emissions and amplification are also important for the production and handling of effective signals.
Light reduction is particularly important in photonics, because the light connected to experiments and tests must often be quantified and may not even be visible. Some light detection devices are chemical; For example, a specific frequency or intensity light can cause a specific chemical effect. Other detectors act as thermometers and respond to the heat supplied by the incoming light.
The field of photonics is used in many different industries, from consumer electronics to robotics. For example, light technologies are scanners and DVD readers. In medicine, laser light is also used to correct vision and remove tattoos. Military applications include the detection of infrared light to detect heat sources in the dark. Some appotonics are used exclusively for fun; These include laser shows and holographic art.
wide range of commercial, diarrheaYSA and military applications in the field of photonics ensure that it is a generally well -funded and prosperous area of scientific research. There are many aspects to study and apply light, so there are many different aspects of behavior and use of light that can be studied at a given moment. One common study area is in modulation, the way the information can be encoded in light. The simplest modulation method is to switch a single light source on and off according to the specified code, such as the Morse code. Other methods of modulation, such as orthogonal multiplexing the frequency division, try to use different properties of different light sources such as frequency, to send more complex and efficient signals.