Optical fiber and Stimulated emission

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Difference between Optical fiber and Stimulated emission

Optical fiber vs. Stimulated emission

An optical fiber or optical fibre is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair. Stimulated emission is the process by which an incoming photon of a specific frequency can interact with an excited atomic electron (or other excited molecular state), causing it to drop to a lower energy level.

Absorption (electromagnetic radiation)

In physics, absorption of electromagnetic radiation is the way in which the energy of a photon is taken up by matter, typically the electrons of an atom.

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Active laser medium

The active laser medium (also called gain medium or lasing medium) is the source of optical gain within a laser.

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Atom

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

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Coherence (physics)

In physics, two wave sources are perfectly coherent if they have a constant phase difference and the same frequency, and the same waveform.

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Electromagnetic field

An electromagnetic field (also EMF or EM field) is a physical field produced by electrically charged objects.

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Electron

The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.

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Optical amplifier

An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal.

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Phase (waves)

Phase is the position of a point in time (an instant) on a waveform cycle.

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Polarization (waves)

Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.

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Radiation

In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.

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Refractive index

In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.

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Spectroscopy

Spectroscopy is the study of the interaction between matter and electromagnetic radiation.

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Watt

The watt (symbol: W) is a unit of power.

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Wavelength

In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.

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