describe optoelectronic components?

Answer 1

Optoelectronic components are those such as Lasers, Laser Diodes and LED's (Light Emitting Diodes) and also LDR's (Light Dependant Resistors.)

Nearly all of these devices are made of semi-conductor material (usually silicon based but doped with other trace elements.)

Then they use a gas - the main combination being Helium-Neon (HeNe) but there are others.

Without being too complex, when electrons in an atom get exicted (i.e. they receive energy) they traverse energy levels (i.e. they go up into another energy level). When the electron is descending an energy level a photon is emitted depending on the particular transition.

Some transitions give out visible wavelength and frequency light (known as the Balmer series), for HeNe it is the colour red. Other mixtures of gases give different colour photons - such as green, blue and purple (although these tend to be more expensive than HeNe to produce.)

Apart from Lasers, most of these devices are relatively low power and require only a few volts to work.

******Why has the guy below just copied and pasted my answer - what a waster, go and get your own education******

Answer 2

Optoelectronic components are those such as Lasers, Laser Diodes and LED's (Light Emitting Diodes) and also LDR's (Light Dependant Resistors.)

Nearly all of these devices are made of semi-conductor material (usually silicon based but doped with other trace elements.)

Then they use a gas - the main combination being Helium-Neon (HeNe) but there are others.

Without being too complex, when electrons in an atom get exicted (i.e. they receive energy) they traverse energy levels (i.e. they go up into another energy level). When the electron is descending an energy level a photon is emitted depending on the particular transition.

Some transitions give out visible wavelength and frequency light (known as the Balmer series), for HeNe it is the colour red. Other mixtures of gases give different colour photons - such as green, blue and purple (although these tend to be more expensive than HeNe to produce.)

Apart from Lasers, most of these devices are relatively low power and require only a few volts to work.

Answer 3

Using fiberoptics as a means of signal transmission. It can also be using electronics and optical as source of information as in EOMS (Electro-Optical Multifunctional System) used in modern Combat System. Informations such as: Infrared imaging, laser ranger finder, etc.